Fly Server must only allow the use of DoW PKI established certificate authorities for verification of the establishment of protected sessions.

Untrusted Certificate Authorities (CA) can issue certificates, but they may be issued by organizations or individuals that seek to compromise DoW systems or by organizations with insufficient security controls. If the CA used for verifying the certificate is not a DoW-approved CA, trust of this CA has not been established. The DoW will only accept PKI certificates obtained from a DoW-approved internal or external certificate authority. Reliance on CAs for the establishment of secure sessions includes, for example, the use of TLS certificates. This requirement focuses on communications protection for the application session rather than for the network packet. This requirement applies to applications that use communications sessions. This includes, but is not limited to, web-based applications and service-oriented architectures (SOAs). Satisfies: SRG-APP-000427, SRG-APP-000605

To validate the web certificate: 1. Run the following command to check sslcert: curl.exe -vI https://<FLY host>:<port>/ 2. If there is "The certificate chain was issued by an authority that is not trusted." in the output, this is a finding. To validate the communication certificate: 1. Log in to the agent server. 2. Open the file "…\APElements\FLY\Agent\bin\AgentCommonVCEnv.config" and find the value of "agentSSLThumbprint". 3. Open the certmgr and find the certificate. 4. If the certificate is not a DoW PKI (or other AO-approved) certificate, this is a finding.

To replace the web certificate: 1. Prepare trusted certificate (pfx file). 2. Install the pfx certificate on the FLY Manager server. 3. Run the following command to replace the sslcert binding: netsh http delete sslcert ipport=0.0.0.0:<FLY Manager Port default:20100> netsh http add sslcert ipport=0.0.0.0:<FLY Manager Port default:20100> certhash=<THUMBPRINT> appid={b8a60d7f-c976-4416-b5af-f9e36cae4dae} 4. Update the value of the node "WebCertThumbprint" in the file …\FLY\Manager\Control\bin\TimerService.exe.config. 5. Restart "FLY Timer Service". To replace the communication certificate: 1. Prepare trusted communication certificate (pfx file). 2. Install the pfx certificate on all FLY servers (agent and manager servers). 3. On the FLY Manager server, update the value of "CertThumbprint" in the file "…\FLY\Manager\Control\bin\TimerService.exe.config". 4. Restart "FLY Timer Service". 5. Log in to the agent servers. 6. Run the following command to replace the sslcert binding: netsh http delete sslcert ipport=0.0.0.0:<FLY Agent Port Default:20101> netsh http add sslcert ipport=0.0.0.0:<FLY Agent Port Default:20101> certhash=<THUMBPRINT> appid={b8a60d7f-c976-4416-b5af-f9e36cae4dae} 7. Update the thumbprint in the following config file: "agentSSLThumbprint" in …\APElements\FLY\Agent\bin\AgentCommonVCEnv.config "clientCertificate" and "serviceCertificate" in …\APElements\FLY\Agent\bin\AgentCommonWCFBehaviors.config "clientCertificate" and "serviceCertificate" in …\APElements\FLY\Agent\bin\CommonDataTransfer.config 8. Restart "FLY Agent Service".