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Note: If ASP.NET is not installed, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Under the "ASP.NET" section, select "Session State". Under "Session State Mode Settings", verify the "In Process" mode is selected. If the "Session State Mode Settings" is set to "In Process", this is not a finding. Alternative method: Click the site name. Select "Configuration Editor" under the "Management" section. From the "Section:" drop-down list at the top of the configuration editor, locate "system.web/sessionState". Verify the "mode" reflects "InProc". If the "mode" is not set to "InProc", this is a finding. If the system being reviewed is part of a Web Farm, interview the System Administrator to ensure Session State Tracking is enabled via a SQL server, or other means. If Session State Tracking is enabled on the Web Farm, this is not a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Under the "ASP.NET" section, select "Session State". Under "Session State Mode Settings", verify the "In Process" mode is selected. Select "Apply" from the "Actions" pane.
Note: If ASP.NET is not installed, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Under the "ASP.NET" section, select "Session State". Under "Cookie Settings", verify the "Use Cookies" mode is selected from the "Mode:" drop-down list. If the "Use Cookies" mode is selected, this is not a finding. Alternative method: Click the site name. Select "Configuration Editor" under the "Management" section. From the "Section:" drop-down list at the top of the configuration editor, locate "system.web/sessionState". Verify the "cookieless" is set to "UseCookies". If the "cookieless" is not set to "UseCookies", this is a finding. Note: If IIS 10.0 server/site is used only for system-to-system maintenance, does not allow users to connect to interface, and is restricted to specific system IPs, this is Not Applicable.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Under the ASP.NET section, select "Session State". Under "Cookie Settings", select the "Use Cookies" from the "Mode:" drop-down list. Select "Apply" from the "Actions" pane.
Note: If the server being reviewed is a public IIS 10.0 web server, this is Not Applicable. Note: If the server is hosting SharePoint, this is Not Applicable. Note: If the server is hosting WSUS, this is Not Applicable. Note: If SSL is installed on load balancer/proxy server through which traffic is routed to the IIS 10.0 server, and the IIS 10.0 server receives traffic from the load balancer/proxy server, the SSL requirement must be met on the load balancer/proxy server and is Not Applicable in this STIG. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Double-click the "SSL Settings" icon. Verify "Require SSL" check box is selected. If the "Require SSL" check box is not selected, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Double-click the "SSL Settings" icon. Select "Require SSL" check box. Select "Apply" from the "Actions" pane.
Note: If the server being reviewed is a private IIS 10.0 web server, this is Not Applicable. Note: If the server being reviewed is a public IIS 10.0 web server not requiring authentication, this is Not Applicable. Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Note: If the server being reviewed is hosting WSUS, this is Not Applicable. Note: If the server being reviewed is hosting Simple Certificate Enrollment Services (SCEP), this is Not Applicable. Note: If the server being reviewed is hosting Network Device Enrollment Services (NDES), this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Double-click the "SSL Settings" icon. Verify "Require SSL" check box is selected. If the "Require SSL" check box is not selected, this is a finding.
Note: If the server being reviewed is a private IIS 10.0 web server, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Double-click the "SSL Settings" icon. Select "Require SSL" check box. Select "Apply" from the "Actions" pane.
Note: If this server is hosting WSUS, this requirement is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Click the "Logging" icon. Under Log Event Destination, verify the "Both log file and ETW event" radio button is selected. If the "Both log file and ETW event" radio button is not selected, this is a finding. Note: "Microsoft-IIS-Logging/logs" must be enabled prior to configuring this setting. More configuration information is available at: https://blogs.intelink.gov/blogs/_disairrt/?p=1317
Note: "Microsoft-IIS-Logging/logs" must be enabled prior to configuring this setting. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Click the "Logging" icon. Under Log Event Destination, select the "Both log file and ETW event" radio button. Select "Apply" from the "Actions" pane.
Interview the System Administrator to review the configuration of the IIS 10.0 architecture and determine if inbound web traffic is passed through a proxy. If the IIS 10.0 is receiving inbound web traffic through a proxy, the audit logs must be reviewed to determine if correct source information is being passed through by the proxy server. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Click the "Logging" icon. Click "View log file". When log file is displayed, review source IP information in log entries and verify entries do not reflect the IP address of the proxy server. If the website is not behind a load balancer or proxy server, this is Not Applicable. If the log entries in the log file(s) reflect the IP address of the proxy server as the source, this is a finding. If provisions have been made to log the client IP via another field (i.e., utilizing X-Forwarded-For), this is not a finding.
Access the proxy server through which inbound web traffic is passed and configure settings to pass web traffic to the IIS 10.0 web server transparently.
Note: If this server is hosting WSUS, this requirement is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Select the website being reviewed. Under "IIS", double-click the "Logging" icon. Verify the "Format:" under "Log File" is configured to "W3C". Select "Fields". Under "Custom Fields", verify the following fields are selected: Request Header >> Connection Request Header >> Warning If any of the above fields are not selected, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Select the website being reviewed. Under "IIS", double-click the "Logging" icon. Configure the "Format:" under "Log File" to "W3C". Select "Fields". Under "Custom Fields", select the following fields: Request Header >> Connection Request Header >> Warning Click "OK". Select "Apply" from the "Actions" pane.
Note: If this server is hosting WSUS, this requirement is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Access the IIS 10.0 web server IIS 10.0 Manager. Under "IIS", double-click the "Logging" icon. Verify the "Format:" under "Log File" is configured to "W3C". Select "Fields". Under "Standard Fields", verify "User Agent", "User Name", and "Referrer" are selected. Under "Custom Fields", verify the following fields have been configured: Request Header >> Authorization Response Header >> Content-Type If any of the above fields are not selected, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Access the IIS 10.0 web server IIS 10.0 Manager. Select the website being reviewed. Under "IIS", double-click the "Logging" icon. Configure the "Format:" under "Log File" to "W3C". Select "Fields". Under "Standard Fields", select "User Agent", "User Name", and "Referrer". Under "Custom Fields", select the following fields: Request Header >> Authorization Response Header >> Content-Type Click "OK". Select "Apply" from the "Actions" pane.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click on the IIS 10.0 site. Under IIS, double-click the “MIME Types” icon. From the "Group by:" drop-down list, select "Content Type". From the list of extensions under "Application", verify MIME types for OS shell program extensions have been removed, to include at a minimum, the following extensions: .exe .dll .com .bat .csh If any OS shell MIME types are configured, this is a finding. Note: For a WSUS deployment .exe extensions may remain.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click on the IIS 10.0 site. Under IIS, double-click the “MIME Types” icon. From the "Group by:" drop-down list, select "Content Type". From the list of extensions under "Application", remove MIME types for OS shell program extensions, to include at a minimum, the following extensions: .exe .dll .com .bat .csh Select "Apply" from the "Actions" pane.
Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. For Handler Mappings, the ISSO must document and approve all allowable scripts the website allows (white list) and denies (black list). The white list and black list will be compared to the Handler Mappings in IIS 10.0. Handler Mappings at the site level take precedence over Handler Mappings at the server level. Open the IIS 10.0 Manager. Click the site name under review. Double-click "Handler Mappings". If any script file extensions from the black list are enabled, this is a finding.
Open the IIS 10.0 Manager. Click the site name under review. Double-click "Handler Mappings". Remove any script file extensions listed on the black list that are enabled. Select "Apply" from the "Actions" pane.
Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. For Request Filtering, the ISSO must document and approve all allowable scripts the website allows (white list) and denies (black list). The white list and black list will be compared to the Request Filtering in IIS 10.0. Request Filtering at the site level take precedence over Request Filtering at the server level. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name to review. Double-click Request Filtering->File Name Extensions Tab. If any script file extensions from the black list are not denied, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name to review. Double-click Request Filtering->File Name Extensions Tab->Deny File Name Extension. Add any script file extensions listed on the black list that are not listed. Select "Apply" from the "Actions" pane.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Select the IIS 10.0 website. Review the features listed under the "IIS" section. If the "WebDAV Authoring Rules" icon exists, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Access Server Manager on the IIS 10.0 website. Select the "Local Server". Click "Manage". Select "Add Roles and Features". Click "Next" in the "Before you begin" dialog box. Select "Role-based or feature-based installation" in the "Installation Type" dialog box and click "Next". Select the IIS 10.0 web server on the "Server Selection" dialog box. From the "Windows Features" dialog box, navigate to "World Wide Web Services" >> "Common HTTP Features". De-select "WebDAV Publishing" and click "Next" to complete removing the WebDAV Publishing feature from the IIS 10.0 web server. Select "Apply" from the "Actions" pane.
Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Right-click on the site name under review. Select "Edit Bindings". Verify there are hostname entries and unique IP addresses assigned to port 80 for HTTP and port 443 for HTTPS. Other approved and documented ports may be used. If both hostname entries and unique IP addresses are not configured to port 80 for HTTP and port 443 for HTTPS (or other approved and documented port), this is a finding. Note: If certificate handling is performed at the Proxy/Load Balancer, this is not a finding. Note: If HTTP/Port 80 is not being used, and is not configured as above, this is not a finding. Note: If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable.
Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Right-click on the site name under review. Select "Edit Bindings". Assign hostname entries and unique IP addresses to port 80 for HTTP and port 443 for HTTPS. Other approved and documented ports may be used. Click "OK". Select "Apply" from the "Actions" pane.
Note: If the server being reviewed is a public IIS 10.0 web server, this is Not Applicable. Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Note: If the server being reviewed is hosting WSUS, this is Not Applicable. Note: If certificate handling is performed at the Proxy/Load Balancer, this is Not Applicable. Note: If the server being reviewed is hosting Simple Certificate Enrollment Services (SCEP), this is Not Applicable. Note: If the server being reviewed is hosting Network Device Enrollment Services (NDES), this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Double-click the "SSL Settings" icon. Verify the "Clients Certificate Required" check box is selected. If the "Clients Certificate Required" check box is not selected, this is a finding.
Note: If the server being reviewed is a public IIS 10.0 web server, this is Not Applicable. Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Note: If certificate handling is performed at the Proxy/Load Balancer, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Double-click the "SSL Settings" icon. Verify the "Clients Certificate Required" check box is selected. Select "Apply" from the "Actions" pane.
Check the account used for anonymous access to the website. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Double-click "Authentication" in the IIS section of the website’s Home Pane. If "Anonymous access" is disabled, this is Not a Finding. If "Anonymous access" is enabled, click "Anonymous Authentication". Click "Edit" in the "Actions" pane. If the "Specific user" radio button is enabled and an ID is specified in the adjacent control box, this is the ID being used for anonymous access. Note the account name. If nothing is tied to "Specific User", this is Not a Finding. Check privileged groups that may allow the anonymous account inappropriate membership: Open "Computer Management" on the machine. Expand "Local Users and Groups". Open "Groups". Review the members of any of the following privileged groups: Administrators Backup Operators Certificate Services (of any designation) Distributed COM Users Event Log Readers Network Configuration Operators Performance Log Users Performance Monitor Users Power Users Print Operators Remote Desktop Users Replicator Double-click each group and review its members. If the IUSR account or any account noted above used for anonymous access is a member of any group with privileged access, this is a finding.
Remove the Anonymous access account from all privileged accounts and all privileged groups.
Note: If ASP.NET is not installed, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Under the "ASP.NET" section, select "Session State". Under "Session State" Mode Settings, verify the "In Process" mode is selected. If the "In Process" mode is selected, this is not a finding. Alternative method: Click the site name. Select "Configuration Editor" under the "Management" section. From the "Section:" drop-down list at the top of the configuration editor, locate "system.web/sessionState". Verify the "mode" reflects "InProc". If the "mode" is not set to "InProc", this is a finding. If the system being reviewed is part of a Web Farm, interview the System Administrator to ensure Session State Tracking is enabled via a SQL server, or other means. If Session State Tracking is enabled on the Web Farm, this is not a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Under the ASP.NET section, select "Session State". Under "Session State" Mode Settings, select the "In Process" mode.
Note: If this server is hosting WSUS, this requirement is Not Applicable. Note: If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Click the "Advanced Settings" from the "Actions" pane. Review the Physical Path. If the Path is on the same partition as the OS, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Click the "Advanced Settings" from the "Actions" pane. Change the Physical Path to the new partition and directory location.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click on the site name. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. If the "maxUrl" value is not set to "4096" or less, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Click the site name under review. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. Set the "maxURL" value to "4096" or less.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click on the site name. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. If the "maxAllowedContentLength" value is not explicitly set to "30000000" or less or a length documented and approved by the ISSO, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. Set the "maxAllowedContentLength" value to "30000000" or less.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Double-click the "Request Filtering" icon. Click “Edit Feature Settings” in the "Actions" pane. If the "Maximum Query String" value is not set to "2048" or less, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. Set the "Maximum Query String" value to "2048" or less.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. If the "Allow high-bit characters" check box is checked, this is a finding. Note: If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. Uncheck the "Allow high-bit characters" check box.
Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. If the "Allow double escaping" check box is checked, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. Uncheck the "Allow double escaping" check box.
Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. If the "Allow unlisted file name extensions" check box is checked, this is a finding. Note: If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable. Note: If this IIS 10.0 installation is supporting Splunk, this requirement is Not Applicable. Note: If this IIS 10.0 installation is supporting WSUS, this requirement is Not Applicable.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Double-click the "Request Filtering" icon. Click "Edit Feature Settings" in the "Actions" pane. Uncheck the "Allow unlisted file extensions" check box.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Click the Site. Double-click the "Directory Browsing" icon. If "Directory Browsing" is not installed, this is Not Applicable. Under the "Actions" pane, verify "Directory Browsing" is "Disabled". If "Directory Browsing" is not "Disabled", this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the Site. Double-click the "Directory Browsing" icon. Under the "Actions" pane, click "Disabled".
Note: If this server is hosting WSUS, this requirement is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Double-click the "Error Pages" icon. Click each error message and click "Edit Feature" setting from the "Actions" pane. If any error message is not set to "Detailed errors for local requests and custom error pages for remote requests" or "Custom error pages", this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Double-click the "Error Pages" icon. Click each error message and click "Edit Feature" Setting from the "Actions" pane; set each error message to "Detailed errors for local requests and custom error pages for remote requests" or "Custom error pages".
Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Note: If the ".NET feature" is not installed, this check is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Double-click ".NET Compilation". Scroll down to the "Behavior" section and verify the value for "Debug" is set to "False". If the "Debug" value is not set to "False", this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Double-click ".NET Compilation". Scroll down to the "Behavior" section and set the value for "Debug" to "False".
If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the Application Pools. Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Process Model" section and verify the value for "Idle Time-out" is not "0". If the "Idle Time-out" is set to "0", this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the Application Pools. Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Process Model" section and set the value for "Idle Time-out" to something other than "0". "20" or less is recommended if the amount of RAM on the system is limited.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Select "Configuration Editor" under the "Management" section. From the "Section:" drop-down list at the top of the configuration editor, locate "system.web/sessionState". Verify the "timeout" is set to "00:15:00 or less”. If "timeout" is not set to "00:15:00 or less”, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name. Select "Configuration Editor" under the "Management" section. From the "Section:" drop-down list at the top of the configuration editor, locate "system.web/sessionState". Set the "timeout" to "00:15:00 or less”. In the "Actions" pane, click "Apply".
Interview the System Administrator and Web Manager. Ask for documentation for the IIS 10.0 web server administration. Verify there are documented procedures for shutting down an IIS 10.0 website in the event of an attack. The procedure should, at a minimum, provide the following steps: Determine the respective website for the application at risk of an attack. Access the IIS 10.0 web server IIS 10.0 Manager. Select the respective website. In the "Actions" pane, under "Manage Website", click "Stop". If necessary, stop all websites. If necessary, stop the IIS 10.0 web server by selecting the web server in the IIS 10.0 Manager. In the "Actions" pane, under "Manage Server", click "Stop". If there are not documented procedures with, at a minimum, the mentioned steps for stopping a website, this is a finding.
Prepare documented procedures for shutting down an IIS 10.0 website in the event of an attack. The procedure should, at a minimum, provide the following steps: Determine the respective website for the application at risk of an attack. Access the IIS 10.0 web server IIS 10.0 Manager. Select the respective website. In the "Actions" pane, under "Manage Website", click "Stop". If necessary, stop all websites. If necessary, stop the IIS 10.0 web server by selecting the web server in the IIS 10.0 Manager. In the "Actions" pane, under "Manage Server", click "Stop".
Follow the procedures below for each site hosted on the IIS 10.0 web server: Access the IIS 10.0 web server IIS 10.0 Manager. Under "IIS" double-click on the "Logging" icon. In the "Logging" configuration box, determine the "Directory:" to which the "W3C" logging is being written. Confirm with the System Administrator that the designated log path is of sufficient size to maintain the logging. Under "Log File Rollover", verify "Do not create new log files" is not selected. Verify a schedule is configured to rollover log files on a regular basis. Consult with the System Administrator to determine if there is a documented process for moving the log files off of the IIS 10.0 web server to another logging device. If the designated logging path device is not of sufficient space to maintain all log files and there is not a schedule to rollover files on a regular basis, this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Under "IIS" double-click on the "Logging" icon. If necessary, in the "Logging" configuration box, redesignate a log path to a location able to house the logs. Under "Log File Rollover", deselect the "Do not create new log files" setting. Configure a schedule to rollover log files on a regular basis.
Review the website to determine if HTTP and HTTPs (e.g., 80 and 443) are used in accordance with those ports and services registered and approved for use by the DoD PPSM. Any variation in PPS will be documented, registered, and approved by the PPSM. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. In the "Action" Pane, click "Bindings". Review the ports and protocols. If unknown ports or protocols are used, then this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. In the "Action" Pane, click "Bindings". Edit to change an existing binding and set the correct ports and protocol.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the site name under review. Click "Bindings" in the "Action" Pane. Click the "HTTPS type" from the box. Click "Edit". Click "View" and then review and verify the certificate path. If the list of CAs in the trust hierarchy does not lead to the DoD PKI Root CA, DoD-approved external certificate authority (ECA), or DoD-approved external partner, this is a finding. If HTTPS is not an available type under site bindings, this is a finding. If HTTPS is not an available type under site bindings, and the Web Server ONLY communicates directly with a load balancer/proxy server with IP address and Domain Restrictions in place, this is not a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Click the Server name. Double-click "Server Certificates". Click "Import" under the "Actions" pane. Browse to the DoD certificate location, select it, and click "OK". Remove any non-DoD certificates if present. Click on the site needing the certificate. Select "Bindings" under the "Actions" pane. Click on the binding needing a certificate and select "Edit", or add a site binding for HTTPS. Assign the certificate to the website by choosing it under the "SSL Certificate" drop-down and clicking "OK".
Note: If SSL is installed on load balancer/proxy server through which traffic is routed to the IIS 10.0 server, and the IIS 10.0 server receives traffic from the load balancer/proxy server, the SSL requirement must be met on the load balancer/proxy server. In this case, this requirement is Not Applicable. Note: If this is a public-facing web server, this requirement is Not Applicable. Note: If this server is hosting WSUS, this requirement is Not Applicable. Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Note: If the server being reviewed is hosting Simple Certificate Enrollment Services (SCEP), this is Not Applicable. Note: If the server being reviewed is hosting Network Device Enrollment Services (NDES), this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Double-click the "SSL Settings" icon under the "IIS" section. Verify "Require SSL" is checked. Verify "Client Certificates Required" is selected. Click the site under review. Select "Configuration Editor" under the "Management" section. From the "Section:" drop-down list at the top of the configuration editor, locate "system.webServer/security/access". The value for "sslFlags" set must include "ssl128". If the "Require SSL" is not selected, this is a finding. If the "Client Certificates Required" is not selected, this is a finding. If the "sslFlags" is not set to "ssl128", this is a finding.
Note: If SSL is installed on load balancer/proxy server through which traffic is routed to the IIS 10.0 server, and the IIS 10.0 server receives traffic from the load balancer/proxy server, the SSL requirement must be met on the load balancer/proxy server. In this case, this requirement is Not Applicable. Note: If this is a public-facing web server, this requirement is Not Applicable. Note: If this server is hosting WSUS, this requirement is Not Applicable. Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Follow the procedures below for each site hosted on the IIS 10.0 web server: Open the IIS 10.0 Manager. Double-click the "SSL Settings" icon under the "IIS" section. Select the "Require SSL" setting. Select the "Client Certificates Required" setting. Click "Apply" in the "Actions" pane. Click the site under review. Select "Configuration Editor" under the "Management" section. From the "Section:" drop-down list at the top of the configuration editor, locate "system.webServer/security/access". Click on the drop-down list for "sslFlags". Select the "Ssl128" check box. Click "Apply" in the "Actions" pane.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Access the IIS 10.0 Manager. Select the website being reviewed. Under "Management" section, double-click the "Configuration Editor" icon. From the "Section:" drop-down list, select "system.webServer/asp". Expand the "session" section. Verify the "keepSessionIdSecure" is set to "True". If the "keepSessionIdSecure" is not set to "True", this is a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Access the IIS 10.0 Manager. Select the website being reviewed. Under "Management" section, double-click the "Configuration Editor" icon. From the "Section:" drop-down list, select "system.webServer/asp". Expand the "session" section. Select "True" for the "keepSessionIdSecure" setting. Select "Apply" from the "Actions" pane.
Note: If the server being reviewed is a public IIS 10.0 web server, this is Not Applicable. Note: If the server being reviewed is hosting SharePoint, this is Not Applicable. Note: If the server being reviewed is hosting WSUS, this is Not Applicable. Note: If SSL is installed on load balancer/proxy server through which traffic is routed to the IIS 10.0 server, and the IIS 10.0 server receives traffic from the load balancer/proxy server, the SSL requirement must be met on the load balancer/proxy server. Follow the procedures below for each site hosted on the IIS 10.0 web server: Access the IIS 10.0 Manager. Under the "Management" section, double-click the "Configuration Editor" icon. From the "Section:" drop-down list, select "system.web/httpCookies". Verify the "require SSL" is set to "True". From the "Section:" drop-down list, select "system.web/sessionState". Verify the "compressionEnabled" is set to "False". If both the "system.web/httpCookies:require SSL" is set to "True" and the "system.web/sessionState:compressionEnabled" is set to "False", this is not a finding.
Follow the procedures below for each site hosted on the IIS 10.0 web server: Access the IIS 10.0 Manager. Under "Management" section, double-click the "Configuration Editor" icon. From the "Section:" drop-down list, select "system.web/httpCookies". Set the "require SSL" to "True". From the "Section:" drop-down list, select "system.web/sessionState". Set the "compressionEnabled" to "False". Select "Apply" from the "Actions" pane.
Note: If the IIS Application Pool is hosting Microsoft SharePoint, this is Not Applicable. If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable. Open the IIS 10.0 Manager. Click "Application Pools". In the list of Application Pools, review the "Applications" column and verify unique application pools for each website. If any Application Pools are being used for more than one website, this is a finding.
Open the IIS 10.0 Manager. Click the site name under review. Assign a unique application pool to each website.
Note: If the IIS Application Pool is hosting Microsoft SharePoint, this is Not Applicable. Note: If this server is hosting WSUS, this requirement is Not Applicable. Note: If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable. Open the IIS 10.0 Manager. Perform for each Application Pool. Click "Application Pools". Highlight an Application Pool and click "Advanced Settings" in the "Action" Pane. Scroll down to the "Recycling section" and verify the value for "Request Limit" is set to a value other than "0". If the "Request Limit" is set to a value of "0", this is a finding. If the system must require "Request Limit" to be set to "0", it is documented and approved by the ISSO, this is not a finding.
Open the IIS 10.0 Manager. Click "Application Pools". Highlight an Application Pool and click "Advanced Settings" in the "Action" Pane. Scroll down to the "Recycling section" and set the value for "Request Limit" to greater than "0". Click "OK".
Note: If the IIS Application Pool is hosting Microsoft SharePoint, this is Not Applicable. Note: If the IIS Application Pool is hosting Microsoft Exchange and not otherwise hosting any content, this is Not Applicable. Note: If this server is hosting WSUS, this requirement is Not Applicable. Open the IIS 10.0 Manager. Expand "Application Pools". Perform the following for each Application Pool: Highlight an Application Pool and click "Recycling" in the "Actions" pane. In the Recycling Conditions window, verify at least one condition is checked as desired by the organization (e.g., Regular Time Intervals, Scheduled Time). If no conditions are checked, this is a finding. Click "Next". In the Recycling Events to Log window, verify at minimum the Recycling Events are selected that correspond to the conditions defined in the previous step (e.g., Regular Time Intervals, Scheduled Time). If no events are selected, this is a finding. Click "Cancel".
Open the IIS 10.0 Manager. Click the "Application Pools". Perform the following for each Application Pool: Highlight an Application Pool and click "Recycling" in the "Actions" pane. In the Recycling Conditions window, select at least one means to recycle the Application Pool (e.g., Regular Time Intervals, Scheduled Time). Click "Next". In the Recycling Events to Log window, select at minimum both the events that match the conditions from the previous step (e.g., Regular Time Intervals, Scheduled Time). Click "Finish".
Note: If the IIS Application Pool is hosting Microsoft SharePoint, this is Not Applicable. If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable. Open the IIS 10.0 Manager. Click "Application Pools". Perform the following for each Application Pool: Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Rapid Fail Protection" section and verify the value for "Enabled" is set to "True". If the "Rapid Fail Protection:Enabled" is not set to "True", this is a finding.
Open the IIS 10.0 Manager. Click "Application Pools". Perform the following for each Application Pool: Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Rapid Fail Protection" section and set the value for "Enabled" to "True". Click "OK".
Note: If the IIS Application Pool is hosting Microsoft SharePoint, this is Not Applicable. If this IIS 10.0 installation is supporting Microsoft Exchange, and not otherwise hosting any content, this requirement is Not Applicable. Open the IIS 10.0 Manager. Click "Application Pools". Perform the following for each Application Pool: Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Rapid Fail Protection" section and verify the value for "Failure Interval" is set to "5". If the "Failure Interval" is not set to "5" or less, this is a finding.
Open the IIS 10.0 Manager. Click "Application Pools". Perform the following for each Application Pool: Highlight an Application Pool to review and click "Advanced Settings" in the "Actions" pane. Scroll down to the "Rapid Fail Protection" section and set the value for "Failure Interval" to "5" or less. Click "OK".
Determine whether scripts are used on the web server for the target website. Common file extensions include, but are not limited to: .cgi, .pl, .vbs, .class, .c, .php, and .asp. All interactive programs must be placed in unique designated folders based on CGI or ASP script type. For modular and/or third-party applications, it is permissible to have script files in multiple folders. Open the IIS 10.0 Manager. Right-click the IIS 10.0 web site name and select "Explore". Search for the listed script extensions. Each script type must be in its unique designated folder. If scripts are not segregated from web content and in their own unique folders, this is a finding. If the website does not utilize CGI, this finding is Not Applicable.
All interactive programs must be placed in unique designated folders based on CGI or ASP script type. Open the IIS 10.0 Manager. Right-click the IIS 10.0 web server name and select "Explore". Search for the listed script extensions. Move each script type to its unique designated folder. Set the permissions to the scripts folders as follows: Administrators: FULL TrustedInstaller: FULL SYSTEM: FULL ApplicationPoolId:READ Custom Service Account: READ Users: READ ALL APPLICATION PACKAGES: READ
Determine whether scripts are used on the web server for the subject website. Common file extensions include, but are not limited to: .cgi, .pl, .vb, .class, .c, .php, and .asp. If the website does not utilize CGI, this finding is Not Applicable. All interactive programs must have restrictive permissions. Open the IIS 10.0 Manager. Right-click the IIS 10.0 web site name and select "Explore". Search for the listed script extensions. Review the permissions to the CGI scripts and verify only the permissions listed, or more restrictive permissions are assigned. Administrators: FULL Web Administrators: FULL TrustedInstaller: FULL ALL APPLICATION PACKAGES: Read ALL RESTRICTED APPLICATION PACKAGES: Read SYSTEM: FULL ApplicationPoolId: READ Custom Service Account: READ Users: READ If the permissions are less restrictive than listed above, this is a finding.
Determine whether scripts are used on the web server for the subject website. Common file extensions include, but are not limited to: .cgi, .pl, .vb, .class, .c, .php, and .asp. If the website does not utilize CGI, this finding is NA. All interactive programs must have restrictive permissions. Open the IIS 10.0 Manager. Right-click the IIS 10.0 web server name and select "Explore". Search for the listed script extensions. Set the permissions to the CGI scripts as follows: Administrators: FULL Web Administrators: FULL TrustedInstaller: FULL ALL APPLICATION PACKAGES: Read ALL RESTRICTED APPLICATION PACKAGES: Read SYSTEM: FULL ApplicationPoolId: READ Custom Service Account: READ Users: READ
If the website does not utilize CGI, this finding is Not Applicable. Open the IIS 10.0 Manager. Right-click the IIS 10.0 web site name and select "Explore". Search for the listed script extensions Search for the following files: *.bak, *.old, *.temp, *.tmp, *.backup, or “copy of...”. If files with these extensions are found, this is a finding.
Remove the backup files from the production web server.
Note: This requirement is only applicable for private DoD websites. If a banner is required, the following banner page must be in place: “You are accessing a U.S. Government (USG) Information System (IS) that is provided for USG-authorized use only. By using this IS (which includes any device attached to this IS), you consent to the following conditions: -The USG routinely intercepts and monitors communications on this IS for purposes including, but not limited to, penetration testing, COMSEC monitoring, network operations and defense, personnel misconduct (PM), law enforcement (LE), and counterintelligence (CI) investigations. - At any time, the USG may inspect and seize data stored on this IS. - Communications using, or data stored on, this IS are not private, are subject to routine monitoring, interception, and search, and may be disclosed or used for any USG-authorized purpose. - This IS includes security measures (e.g., authentication and access controls) to protect USG interests—not for your personal benefit or privacy. - Notwithstanding the above, using this IS does not constitute consent to PM, LE or CI investigative searching or monitoring of the content of privileged communications, or work product, related to personal representation or services by attorneys, psychotherapists, or clergy, and their assistants. Such communications and work product are private and confidential. See User Agreement for details.” OR If your system cannot meet the character limits to store this amount of text in the banner, the following is another option for the warning banner: "I've read & consent to terms in IS user agreem't." NOTE: While DoDI 8500.01 does not contain a copy of the banner to be used, it does point to the RMF Knowledge Service for a copy of the required text. It is also noted that the banner is to be displayed only once when the individual enters the site and not for each page. If the access-controlled website does not display this banner page before entry, this is a finding.
Configure a DoD private website to display the required DoD banner page when authentication is required for user access.