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Jim_43682's avatar
Jim_43682
Icon for Nimbostratus rankNimbostratus
Jul 02, 2012

AD Remote Authentication over Managment interface?

Hello All,

 

 

Got a quick one for you. Is it possible to have the remote authentication requests go out the Management interface? Right now, after doing a tcpdump on both management interface and our "traffic" interface. I see LDAP authentication requests going out the "traffic" port and not the management.

 

 

Reason i ask is, we have a typical DMZ setup however security only want's authentication requests to go across the management vlan(which is cable plugged into the management interface.).

 

 

thanks for your help,

 

 

 

Jim

 

 

 

management
monitoring
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jul 02, 2012
    have you tried to add management route for active directory server?

     

     

    sol3669: Overview of management interface routing (9.x - 10.x)

     

    http://support.f5.com/kb/en-us/solutions/public/3000/600/sol3669.html
  • Jim_43682's avatar
    Jim_43682
    Icon for Nimbostratus rankNimbostratus
    Jul 02, 2012
    Thanks nitass. That got me started, now ldaps request are originating from the management interface . However, now the secure logs state that: 

     Jul  2 11:26:43 local/gtmhostname err httpd[20108]: [error] [client 1.1.1.1] Could not obtain user credentials
r also happens when ssl handshakes go wrong.
Jul  2 11:26:46 local/gtmhostname alert httpd[20301]: pam_unix(httpd:auth): check pass; user unknown
user= rhost=1.1.1.1

    Which is werid because its the same config from our Internal environment, and I've verified the firewall is set to allow connections over 636. Tested with telnet.

  • Jim_43682's avatar
    Jim_43682
    Icon for Nimbostratus rankNimbostratus
    Jul 03, 2012
    I run this on the F5 and get back results: 

     
ldapsearch -x -D "CN=bindUser,OU=it,OU=internal,DC=domain,DC=company,DC=com" -b "DC=domain,DC=company,DC=com" -H ldaps://ADserver -W CN=F5admingroup

    But when I try to log in from the WebGUI. It just hangs for 5min and then says connection rest??.

    Logs says nothing. Doesn't even move. I was tailing it the whole time.

    Any ideas?

  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jul 04, 2012
    would it be possible to capture packet between bigip and ldaps? do you have private key to decrypt it?
  • Jim_43682's avatar
    Jim_43682
    Icon for Nimbostratus rankNimbostratus
    Jul 05, 2012
    No. Is there anything I can try? I don't understand how the ldapsearch command works on the F5 device. but the log in doesn't. 

     
auth ldap system-auth {
   service ldaps
   ssl enable
   search base dn "DC=domain,DC=company,DC=com"
   bind dn "CN=binduser,DC=domain,DC=company,DC=com"
   bind pw "binduserpw"
   login attr "samaccountname"
   servers {
      "167.69.x.x"
      "167.69.x.y"
      "167.69.x.z"
   }
}
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jul 06, 2012
    the configuration looks okay to me. if i were you, i would try normal ldap (plain text) and capture packet to see what wrong is.

    this is my configuration. 

    root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list auth source
auth source {
    type active-directory
}
root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list auth remote-user
auth remote-user {
    default-role admin
    remote-console-access tmsh
}
root@(ve11a)(cfg-sync In Sync)(Active)(/Common)(tmos) list auth ldap
auth ldap system-auth {
    bind-dn cn=administrator,cn=users,dc=abc,dc=com
    bind-pw password
    login-attribute samaccountname
    port 636
    search-base-dn DC=abc,DC=com
    servers { 172.28.19.78 }
    ssl enabled
}

[root@ve11a:Active:In Sync] config  tail /var/log/secure
Jul  6 19:28:03 ve11a notice httpd[31839]: 01070417:5: AUDIT - user tasmania - RAW: httpd(mod_auth_pam): user=tasmania(tasmania) partition=[All] level=Administrator tty=/usr/bin/tmsh host=192.168.206.55 attempts=1 start="Fri Jul  6 19:28:03 2012".
  • Jim_43682's avatar
    Jim_43682
    Icon for Nimbostratus rankNimbostratus
    Jul 09, 2012
    Really stumped here. The ldapsearch string works flawlessly, however the web GUIlog in hangs for about a minute then drops. I tail'd the logs during the web GUIlog in, and no new statements are generated. I've tried increasing the logging level to debug and still nothing in the logs. Is there anywhere else I can check to figure out what is going on here.
  • nitass's avatar
    nitass
    Icon for Employee rankEmployee
    Jul 09, 2012
    have you tried to open a support case? if you can provide them packet capture, they should be able to help you to look into the capture.
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