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    DNS not resolving

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    DHCP and DNS
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    • D
      drbowen
      last edited by

      I am trying to set up a pfsense router that is running FreeBSD 7.2 and pf filter for the firewall.

      we have an IP of 97.89.176.86 /30
      gateway 97.89.176.85
      netmask 255.255.255.252

      I can ping the gateway from the router but I do not get DNS resolution.  I cannot ping other IPs from the router.

      When we run:

      netstat -r

      Our network devices display very slowly or time out.

      When we run
      I am trying to set up a pfsense router that is running FreeBSD 7.2 and pf filter for the firewall.

      we have an IP of 97.89.176.86 /30
      gateway 97.89.176.85
      netmask 255.255.255.252

      I can ping the gateway from the router but I do not get DNS resolution.  I cannot ping other IPs from the router.

      When we run:

      netstat -r

      Our network devices display very slowly or time out.

      When we run

      netstat -rn

      The routing table is very promptly and correctly displayed.

      The gateway has the flags:

      97.89.176.85 UGW
      97.89.176.86 UHLW

      I think the DNS resolution is not being correctly performed.  I remember this happening previously about 4 years ago it there was something miss configured on the private LAN but I can't find the previous solution to fix the problem.

      Any suggestions?

      Thanks in advance.

      Sam Bowen
      http://www.openmedsoftware.org
      netstat -rn

      The routing table is very promptly and correctly displayed.

      The gateway has the flags:

      97.89.176.85 UGW
      97.89.176.86 UHLW

      I think the DNS resolution is not being correctly performed.  I remember this happening previously about 4 years ago it there was something miss configured on the private LAN but I can't find the previous solution to fix the problem.

      Any suggestions?

      Thanks in advance.

      Sam Bowen
      http://www.openmedsoftware.org

      1 Reply Last reply Reply Quote 0
      • D
        danswartz
        last edited by

        It isn't just DNS - you say you cannot ping upstream of your gateway either, correct?  Can you see the pfsense WAN IP from outside?  What is your DNS set as?

        1 Reply Last reply Reply Quote 0
        • D
          drbowen
          last edited by

          It isn't just DNS - you say you cannot ping upstream of your gateway either, correct? No, I cannot.

          Can you see the pfsense WAN IP from outside? No, I cannot.

          What is your DNS set as?  From the pfSense firewall:

          cat resolv.conf

          nameserver 24.158.63.9
          nameserver 24.158.63.8

          These are the correct DNS servers as reported by Charter Communications the ISP provider.

          I can ping the gateway machine from the router.

          I cannot ping the WAN IP (97.89.176.86) from the outside.

          ping 97.89.176.86
          PING 97.89.176.86 (97.89.176.86) 56(84) bytes of data.
          ^C
          –- 97.89.176.86 ping statistics ---
          4 packets transmitted, 0 received, 100% packet loss, time 2999ms

          I can ping the gateway machine from the outside.

          ping 97.89.176.85
          PING 97.89.176.85 (97.89.176.85) 56(84) bytes of data.
          64 bytes from 97.89.176.85: icmp_seq=1 ttl=50 time=42.2 ms
          64 bytes from 97.89.176.85: icmp_seq=2 ttl=50 time=40.8 ms
          64 bytes from 97.89.176.85: icmp_seq=3 ttl=50 time=41.9 ms
          ^C
          --- 97.89.176.85 ping statistics ---
          3 packets transmitted, 3 received, 0% packet loss, time 2003ms
          rtt min/avg/max/mdev = 40.807/41.669/42.210/0.616 ms

          I can ping the DNS servers from outside the network:

          ping 24.158.63.9

          PING 24.158.63.9 (24.158.63.9) 56(84) bytes of data.
          64 bytes from 24.158.63.9: icmp_seq=1 ttl=241 time=35.9 ms
          64 bytes from 24.158.63.9: icmp_seq=3 ttl=241 time=34.9 ms
          64 bytes from 24.158.63.9: icmp_seq=4 ttl=241 time=35.9 ms
          64 bytes from 24.158.63.9: icmp_seq=5 ttl=241 time=35.1 ms
          64 bytes from 24.158.63.9: icmp_seq=6 ttl=241 time=35.5 ms
          ^C
          --- 24.158.63.9 ping statistics ---
          6 packets transmitted, 5 received, 16% packet loss, time 5005ms
          rtt min/avg/max/mdev = 34.963/35.513/35.974/0.450 ms

          ping 24.158.63.8

          PING 24.158.63.8 (24.158.63.8) 56(84) bytes of data.
          64 bytes from 24.158.63.8: icmp_seq=1 ttl=241 time=35.4 ms
          64 bytes from 24.158.63.8: icmp_seq=2 ttl=241 time=34.9 ms
          64 bytes from 24.158.63.8: icmp_seq=3 ttl=241 time=34.5 ms
          ^C
          --- 24.158.63.8 ping statistics ---
          3 packets transmitted, 3 received, 0% packet loss, time 2001ms
          rtt min/avg/max/mdev = 34.534/34.992/35.488/0.419 ms

          I cannot ping the DNS servers from inside or from the router.

          DNS1 24.158.63.9
          DNS2 24.158.63.8

          Sam Bowen
          http://www.openmedsoftware.org/

          1 Reply Last reply Reply Quote 0
          • D
            danswartz
            last edited by

            well inability to ping your WAN IP from outside isn't an problem per-se, since that is disabled by default.  can you post your interface config, NAT rules, etc…

            1 Reply Last reply Reply Quote 0
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