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    Kerberos Squid without authentication?

    Scheduled Pinned Locked Moved Cache/Proxy
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    • K
      killmasta93 @mcury
      last edited by

      @mcury
      thanks for the reply so i changed to hostname but still get the popup

      76ca37e5-c84e-459b-9230-1505e87c098e-image.png

      i also checked if the get the ticket

      im not sure if the above steps when configuring squid i did it correctly which i think might be the problem?

      aaaab9e1-d75a-4718-84ad-0a96e44eb770-image.png

      Tutorials:

      https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

      M 1 Reply Last reply Reply Quote 0
      • M
        mcury Rebel Alliance @killmasta93
        last edited by

        Check if your pfsense can perform the following command successfully.

        kninit administrator

        If it works, update here and we follow from that.

        dead on arrival, nowhere to be found.

        K 1 Reply Last reply Reply Quote 0
        • K
          killmasta93 @mcury
          last edited by

          @mcury
          Thanks for the reply this is what i get

          [2.4.5-RELEASE][root@Olympus.casa.local]/root: kinit administrador
administrador@CASA.LOCAL's Password: 
[2.4.5-RELEASE][root@Olympus.casa.local]/root: klist
Credentials cache: FILE:/tmp/krb5cc_0
        Principal: administrador@CASA.LOCAL

  Issued                Expires               Principal
May  9 20:09:35 2021  May 10 06:09:35 2021  krbtgt/CASA.LOCAL@CASA.LOCAL

          Tutorials:

          https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

          M 1 Reply Last reply Reply Quote 0
          • M
            mcury Rebel Alliance @killmasta93
            last edited by mcury

            Now check if your pfsense can perform these commands:
            Assuming that olympus is the hostname of the AD DNS server and the domain is casa.local

            host -t SRV _ldap._tcp.casa.local.
host -t SRV _kerberos._udp.casa.local.
host -t A olympus.casa.local.

            I would remove these lines from krb5.conf to test:
            You will need to generate a new keytab after changing these settings

            default_tgs_enctypes = aes128-cts-hmac-sha1-96
default_tkt_enctypes = aes128-cts-hmac-sha1-96
permitted_enctypes = aes128-cts-hmac-sha1-96

            dead on arrival, nowhere to be found.

            K 1 Reply Last reply Reply Quote 0
            • K
              killmasta93 @mcury
              last edited by

              @mcury said in Kerberos Squid without authentication?:

              host -t A olympus.casa.local.

              Thanks for the reply, as for the AD DNS the server is called apolo which has an ip of 192.168.3.150 and olympus is the pfsense with IP 192.168.3.254

              i ran the following commands without removing the lines and seemed to worked

              [2.4.5-RELEASE][root@Olympus.casa.local]/root: host -t SRV _ldap._tcp.casa.local.
_ldap._tcp.casa.local has SRV record 0 100 389 apolo.casa.local.
[2.4.5-RELEASE][root@Olympus.casa.local]/root: host -t SRV _kerberos._udp.casa.local.
_kerberos._udp.casa.local has SRV record 100 100 88 apolo.casa.local.
_kerberos._udp.casa.local has SRV record 0 100 88 apolo.casa.local.
[2.4.5-RELEASE][root@Olympus.casa.local]/root: host -t A apolo.casa.local.
apolo.casa.local has address 192.168.3.150

              Tutorials:

              https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

              M 1 Reply Last reply Reply Quote 0
              • M
                mcury Rebel Alliance @killmasta93
                last edited by

                @killmasta93 said in Kerberos Squid without authentication?:

                [2.4.5-RELEASE][root@Olympus.casa.local]/root: host -t SRV _kerberos._udp.casa.local.
                _kerberos._udp.casa.local has SRV record 100 100 88 apolo.casa.local.
                _kerberos._udp.casa.local has SRV record 0 100 88 apolo.casa.local.

                I would remove the following lines from krb5.conf to test:
                You will need to generate a new keytab after that, then replace the keytab in pfsense, and logout and login again with the client to test.

                Following lines to remove will use the default enctypes.
                default_tgs_enctypes = aes128-cts-hmac-sha1-96
                default_tkt_enctypes = aes128-cts-hmac-sha1-96
                permitted_enctypes = aes128-cts-hmac-sha1-96

                dead on arrival, nowhere to be found.

                K 1 Reply Last reply Reply Quote 0
                • K
                  killmasta93 @mcury
                  last edited by

                  @mcury
                  Thanks for the reply, so did the following deleted the following lines and recreated the keytab but same issue

                  1e13ead3-f8da-481e-bc43-4c9b1dc26d83-image.png

                  993a40a7-81b3-4982-a5d0-3b8cf8bee96b-image.png

                  7b88e87e-2a79-45b4-bbd4-3962f014576d-image.png

                  Tutorials:

                  https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

                  M 1 Reply Last reply Reply Quote 0
                  • M
                    mcury Rebel Alliance @killmasta93
                    last edited by

                    auth_param negotiate program /usr/local/libexec/squid/negotiate_kerberos_auth -d -k /usr/local/etc/squid/squidkeytab.keytab
                    auth_param negotiate children 1000
                    auth_param negotiate keep_alive on
                    acl auth proxy_auth REQUIRED
                    http_access deny auth
                    http_access allow auth

                    name is squidkeytab.keytab and not squidproxy.keytabb ?

                    dead on arrival, nowhere to be found.

                    K 1 Reply Last reply Reply Quote 0
                    • K
                      killmasta93 @mcury
                      last edited by

                      @mcury
                      Thanks for the reply, just realized that it was an error but after changing same issue

                      c94d8927-3857-4fc6-85b0-4ef09f37aabd-image.png

                      Tutorials:

                      https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

                      M 1 Reply Last reply Reply Quote 0
                      • M
                        mcury Rebel Alliance @killmasta93
                        last edited by

                        df438830-1f39-49e6-a13d-748436058fb2-image.png
                        This is the ticket that should appear in klist..

                        Everything seems to be OK with your configuration, at least between pfsense and AD.

                        Show squid logs again after changing the keytab.
                        Can you test with another client?

                        dead on arrival, nowhere to be found.

                        K 1 Reply Last reply Reply Quote 0
                        • K
                          killmasta93 @mcury
                          last edited by

                          @mcury
                          Thanks again for the reply, so im trying another machine which is in the domain but same issue

                          aed2b95d-d81f-417c-b591-85de356c47f9-image.png

                          32bd5b2a-74ea-4215-ab8b-4c65081e31db-image.png

                          Tutorials:

                          https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

                          M 1 Reply Last reply Reply Quote 0
                          • M
                            mcury Rebel Alliance @killmasta93
                            last edited by

                            Did you create the user and enabled it in AD ?

                            8cbf2dcb-d511-4859-a23d-79155901eca4-image.png

                            dead on arrival, nowhere to be found.

                            K 1 Reply Last reply Reply Quote 0
                            • K
                              killmasta93 @mcury
                              last edited by

                              @mcury
                              Thanks for the reply, correct already did that
                              on the Service principal name

                              f9688ac1-9018-4ebd-8b50-23e2c29f4c76-image.png

                              Tutorials:

                              https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

                              M 1 Reply Last reply Reply Quote 0
                              • M
                                mcury Rebel Alliance @killmasta93
                                last edited by mcury

                                Maybe you are facing the same problem as this guy was, take a look:

                                http://squid-web-proxy-cache.1019090.n4.nabble.com/squid-kerb-auth-received-type-1-NTLM-token-td2131613.html

                                Quote:
                                You should see a request from the client to Active Directory asking for a TGS for HTTP/<fqdn of proxy>. If that does not happen or get refused by AD the client will fall back to NTLM (wrapped into the Negotiate response) which is waht you see on the proxy.

                                I would set a packet capture like that guy did to check, port 88

                                dead on arrival, nowhere to be found.

                                K 1 Reply Last reply Reply Quote 0
                                • K
                                  killmasta93 @mcury
                                  last edited by

                                  @mcury
                                  Finally got it to authenticate but im still getting the popup

                                  525feae3-d657-4d22-b5de-aa1e3611b3fd-image.png

                                  Tutorials:

                                  https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

                                  M 1 Reply Last reply Reply Quote 0
                                  • M
                                    mcury Rebel Alliance @killmasta93
                                    last edited by mcury

                                    Why are you authenticating as administrador@CASA.LOCAL ?
                                    The user should be appearing there and not administrator. Should be user@CASA.LOCAL

                                    The user need to be member of the group used in ldapusersearch in Squidguard

                                    dead on arrival, nowhere to be found.

                                    K 1 Reply Last reply Reply Quote 0
                                    • K
                                      killmasta93 @mcury
                                      last edited by killmasta93

                                      @mcury
                                      its because im opening the chrome inside of the windows server which im logged on as administrador

                                      this is another user

                                      68db97a0-6e2f-4ab8-b790-b01fded9a4c1-image.png

                                      Tutorials:

                                      https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

                                      M 1 Reply Last reply Reply Quote 0
                                      • M
                                        mcury Rebel Alliance @killmasta93
                                        last edited by

                                        Ok, in this last screenshot, the username is Windows10?
                                        Is this user a member of the group used in ldapusersearch?

                                        You are almost there.. soon we will find the problem

                                        dead on arrival, nowhere to be found.

                                        K 1 Reply Last reply Reply Quote 0
                                        • K
                                          killmasta93 @mcury
                                          last edited by

                                          @mcury
                                          thanks for the reply,
                                          so on the squidguard

                                          ldapusersearch ldap://apolo.casa.local:3268/dc=casa,dc=local?userPrincipalName?sub?(&(memberof=%2cCN=Users%2cDC=casa%2cDC=local)(userPrincipalName=%s))

                                          and the user is located in

                                          CN=windows10,CN=Users,DC=casa,DC=local

                                          Tutorials:

                                          https://www.mediafire.com/folder/v329emaz1e9ih/Tutorials

                                          M 1 Reply Last reply Reply Quote 0
                                          • M
                                            mcury Rebel Alliance @killmasta93
                                            last edited by mcury

                                            ldapusersearch ldap://apolo.casa.local:3268/dc=casa,dc=local?userPrincipalName?sub?(&(memberof=%2cCN=Users%2cDC=casa%2cDC=local)(userPrincipalName=%s))

                                            You used a %2c in the wrong place (It means a ',')

                                            It should be:

                                            ldapusersearch ldap://apolo.casa.local:3268/dc=casa,dc=local?userPrincipalName?sub?(&(memberof=CN=Users%2cDC=casa%2cDC=local)(userPrincipalName=%s))

                                            It's important to notice that you are not filtering users by group in this case..
                                            I would create a group, like internet, add the members to this group, and then filter like this:

                                            ldapusersearch ldap://apolo.casa.local:3268/dc=casa,dc=local?userPrincipalName?sub?(&(memberof=CN=internet%2cCN=Users%2cDC=casa%2cDC=local)(userPrincipalName=%s))

                                            dead on arrival, nowhere to be found.

                                            K 1 Reply Last reply Reply Quote 0
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