[ale] Can't connect to port 53

[Matt Hessel]

When you telnet to local host, you are connecting to a virtual interface
(loopback) which uses 127.0.0.1

External hosts cannot use it.

Your bind9 instance has attached to the loopback instead of the external IP
address for your host.

Check the configuration for bind, and optionally your hosts file, make sure
your hostname is set to the external IP, and not the loopback (which is
default)
On Jan 17, 2013 5:59 PM, "Jim Lynch" <ale_nospam at fayettedigital.com> wrote:

> I have a vps system running bind9 that I can telnet to port 53 from the
> local system but not from any other system (I tried three). See:
>
> telnet localhost 53
> Trying ::1...
> Connected to localhost.
> Escape character is '^]'.
> }^]
> telnet> quit
>
> ifconfig | grep inet
>
> inet addr:xxx.xxx.33.120  P-t-P:xxx.xxx.33.120 Bcast:xxx.xxx.33.120
>  Mask:255.255.255.255
>
> iptables -L
> Chain INPUT (policy ACCEPT)
> target     prot opt source               destination
>
> Chain FORWARD (policy ACCEPT)
> target     prot opt source               destination
>
> Chain OUTPUT (policy ACCEPT)
> target     prot opt source               destination
>
> (from another host)
>  telnet xxx.xxx.33.120 53
> Trying xxx.xxx.33.120...
> telnet: Unable to connect to remote host: Connection refused
>
> /etc/hosts.deny has some entries, but none for the host that can't connect
> and all the entries are for sshd anyway.
>
> Is there something else that needs to be configured?  Selinux doesn't seem
> to be installed on this Centos 5.8 system.  No sestatus command, no
> /etc/selinux/config file, etc.
>
> Thanks,
> Jim.
>
>
>
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