topic Re: NAC Manager and Server communication issue in Network Security https://community.cisco.com/t5/network-security/nac-manager-and-server-communication-issue/m-p/1165719#M742657 <HTML><HEAD></HEAD><BODY><P>This ended up being a conflict between the dhcpd.conf and the dchp.leases files. Removing those two files resolved the issue.</P><P>Strange, but true.</P></BODY></HTML> Wed, 27 May 2009 19:43:55 GMT kschuerman 2009-05-27T19:43:55Z NAC Manager and Server communication issue https://community.cisco.com/t5/network-security/nac-manager-and-server-communication-issue/m-p/1165716#M742610 <P>I have a Clean Access 4.1.8 RealIP Gateway deployment. I recently went through a domain name change and applied new SSL certificates and now I am having severe communication issues.</P><P></P><P>When I click the manage button for the CAS I often get an error: "Could not connect to the Clean Access Server. This could be due to your network, ssl/authorization or shared secret settings."</P><P></P><P>Other times when it brings up the CAS management pages I click the DHCP link and get: "DHCP server not started. Invalid DHCP or network settings."</P><P></P><P>When it works I can navigate around the management pages a little, attempt to make a change and then I get a message that the server is not connected.</P><P></P><P>There is a FWSM and PIX515E between the manager and the server, but until the rename I didn't have any communication issues and the FW configs in regards to those devices haven't changed.</P><P></P><P>Any thoughts? Thanks.</P><P></P> Fri, 21 Feb 2020 11:29:04 GMT https://community.cisco.com/t5/network-security/nac-manager-and-server-communication-issue/m-p/1165716#M742610 kschuerman 2020-02-21T11:29:04Z Re: NAC Manager and Server communication issue https://community.cisco.com/t5/network-security/nac-manager-and-server-communication-issue/m-p/1165717#M742616 <HTML><HEAD></HEAD><BODY><P>sounds like broken SSL certs caused by the name changes. The NAC appliances are very sensitive to these things. I found it best when I have to issue new certs on either the CAM or CAS to break the connection between the two and then importing any certs or root certs, and then re-establish the connection between them. </P><P>otherwise you're asking for trouble.</P></BODY></HTML> Wed, 27 May 2009 15:23:50 GMT https://community.cisco.com/t5/network-security/nac-manager-and-server-communication-issue/m-p/1165717#M742616 srue 2009-05-27T15:23:50Z Re: NAC Manager and Server communication issue https://community.cisco.com/t5/network-security/nac-manager-and-server-communication-issue/m-p/1165718#M742640 <HTML><HEAD></HEAD><BODY><P>I just broke the connection and attempted to reapply the SSL certificates. The manager completed successfully, but the server responded with "unable to connect to manager.HTTP/1.1 409 reconnect.jsp:no clean access server with 00_18_71_E3_E1_AE_00_18_71_E3_E1_AF"</P></BODY></HTML> Wed, 27 May 2009 15:32:24 GMT https://community.cisco.com/t5/network-security/nac-manager-and-server-communication-issue/m-p/1165718#M742640 kschuerman 2009-05-27T15:32:24Z Re: NAC Manager and Server communication issue https://community.cisco.com/t5/network-security/nac-manager-and-server-communication-issue/m-p/1165719#M742657 <HTML><HEAD></HEAD><BODY><P>This ended up being a conflict between the dhcpd.conf and the dchp.leases files. Removing those two files resolved the issue.</P><P>Strange, but true.</P></BODY></HTML> Wed, 27 May 2009 19:43:55 GMT https://community.cisco.com/t5/network-security/nac-manager-and-server-communication-issue/m-p/1165719#M742657 kschuerman 2009-05-27T19:43:55Z