server doesn't listen on UDP port 53

Discussion in 'Installation/Configuration' started by kmchen, Jan 6, 2012.

  1. kmchen

    kmchen New Member

    zonecheck on a domain reports "server doesn't listen on UDP port 53"

    When I look at :
    Code:
    Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
    tcp        0      0 127.0.0.1:10024         0.0.0.0:*               LISTEN      3908/amavisd (maste
    tcp        0      0 127.0.0.1:10025         0.0.0.0:*               LISTEN      3803/master
    tcp        0      0 0.0.0.0:3306            0.0.0.0:*               LISTEN      2831/mysqld
    tcp        0      0 0.0.0.0:110             0.0.0.0:*               LISTEN      894/pop3-login
    tcp        0      0 0.0.0.0:143             0.0.0.0:*               LISTEN      895/imap-login
    tcp        0      0 87.98.160.188:53        0.0.0.0:*               LISTEN      797/named
    tcp        0      0 176.31.109.26:53        0.0.0.0:*               LISTEN      797/named
    tcp        0      0 127.0.0.1:53            0.0.0.0:*               LISTEN      797/named
    tcp        0      0 0.0.0.0:21              0.0.0.0:*               LISTEN      3870/pure-ftpd (SER
    tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      3772/sshd
    tcp        0      0 127.0.0.1:953           0.0.0.0:*               LISTEN      797/named
    tcp        0      0 0.0.0.0:25              0.0.0.0:*               LISTEN      876/smtpd
    tcp        0      0 0.0.0.0:993             0.0.0.0:*               LISTEN      895/imap-login
    tcp        0      0 0.0.0.0:995             0.0.0.0:*               LISTEN      894/pop3-login
    tcp6       0      0 :::8080                 :::*                    LISTEN      624/apache2
    tcp6       0      0 :::80                   :::*                    LISTEN      624/apache2
    tcp6       0      0 :::8081                 :::*                    LISTEN      624/apache2
    tcp6       0      0 :::53                   :::*                    LISTEN      797/named
    tcp6       0      0 :::21                   :::*                    LISTEN      3870/pure-ftpd (SER
    tcp6       0      0 :::22                   :::*                    LISTEN      3772/sshd
    tcp6       0      0 ::1:953                 :::*                    LISTEN      797/named
    tcp6       0      0 :::443                  :::*                    LISTEN      624/apache2
    
    I see my server listens only on 3 ip adresses: real ip, ipfailover and lo
    But in /etc/bind/named.conf.options:
    Code:
            auth-nxdomain no;    # conform to RFC1035
            listen-on-v6 { any; };
            listen-on { any; };
    //      allow-recursion { 127.0.0.1; };
    
    It seems to be configured to listen on any port. Where are defined the 3 ip limitations ?
     
  2. falko

    falko Super Moderator

    What's the output of
    Code:
    netstat -uap
    ?
     
  3. kmchen

    kmchen New Member

    Here is the result of the command:
     
    Last edited: Jan 9, 2012
  4. falko

    falko Super Moderator

    named is listening on port 53 UDP, so I guess it's a firewall issue.
     

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