6

I have a bind9 DNS server that I have configured to run in port 55 but I can't get the setup working. The server is works fine but I can't tune my local machine to resolve nameserver queries from 127.0.0.1, port 55

Example:

dig -p 55 a1.mylocalinstance.dip
...
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; QUESTION SECTION:
;a1.mylocalinstance.dip.        IN  A

;; ANSWER SECTION:
a1.mylocalinstance.dip. 10800   IN  A   192.168.1.107

;; AUTHORITY SECTION:
mylocalinstance.dip.    10800   IN  NS  ns.mylocalinstance.dip.

;; ADDITIONAL SECTION:
 ns.mylocalinstance.dip.    10800   IN  A   192.168.1.100

;; Query time: 0 msec
;; SERVER: 127.0.0.1#55(127.0.0.1)
;; WHEN: Fri Dec 18 00:20:54 EET 2015
;; MSG SIZE  rcvd: 96

When I try to ssh at my server:

$ssh test@a1.mylocalinstance.dip
ssh: Could not resolve hostname a1.mylocalinstance.dip: Name or service not known

My /etc/resolv.conf file:

nameserver [127.0.0.1]:55
nameserver fe80::1%wlan0

I don't understand the relations-dependencies between the network manager and the resolver and how to get things working with bind in my port and how can I forward my dns queries at port 55.

Mini Fridge
  • 212

2 Answers2

1

You haven't explained what is wrong with port 53, 127.0.0.1:53. If it is already in use, you might try to set the bind9 DNS server at port 53 of another local address, say 127.0.0.53. That is, 127.0.0.53:53. I haven't tested that.

As an aside, I think that some OSs, perhaps MAC, can be set to also read a port, say 55, in resolv.conf, or their equivalent.

nh4c
  • 11
0

Keep in mind that port 53 is the destination port (of the DNS server), whether it's on the local machine or elsewhere. About the only option you have to connect to a DNS server on port 55 would be to use an iptables command. As long as /etc/resolv.conf points to another machine, any other service can run on port 53 of the local box (though you'd need to be root to run it and I can't think of a good reason to do so).

NetManger reads a config file (in Debian variants /etc/network/interfaces) and writes the /etc/resolv.conf file when it's started (normally, at boot). In other words, NetworkManager is just a program that writes the config files used by other programs and/or calls the programs/scripts to employ those config files.

joatd
  • 513