Redirect local DNS query to remote DNS server on non standard port?
 

The issue is that my CentOS workstation is in a vlan from where the Intranet's DNS servers are unreachable.

For browsing the web there is an ISA proxy server, which I presume resolves DNS for my firefox. However, wget, host, ping and aria2c fail to get any sort of DNS resolution since they're being run from command line.

I have exported HTTP_PROXY value, which provides me internet access on console, but,only when I connect using IP address. It fails on name resolution.


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My question is:

May I redirect the DNS queries to my home PC which would be running a DNS server on a non standard port?


I was thinking of putting

nameserver 127.0.0.1 in /etc/resolv.conf

and then put iptables rule to redirect 127.0.0.1:53 UDP to a.public.ip.address:3535 UDP

I don't know if I am shooting blanks or what, I am not very much aware of this kind of setup.

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My main need is to provide DNS resolution to console apps.

I want to utilize my company's idle bandwidth for bulk downloads, so, using proxy, SSH tunneling through my Home PC is out of question.

Any ideas that I can read upon?

It sounds as if you have an http proxy working and what you need is a command line proxy.

You might want to have a look at this article to see if it helps you do that (I haven't done this myself but it looks like it may be what you need):

http://www.aboutdebian.com/proxy.htm

P.S. But iptables exists on other distros so it can probably be adapted fairly easily.

^ I thought I made my query simple :)

Well, I don't require help in setting up HTTP proxy for command line, that I already have. Please read the post once again.

why hack iptables rules? why use unstandard port for DNS? It is not meant to be installed on other port than 53, like some other standard internet services. i think a better solution will be configure iptables on your home pc allowing only your company external IP/subnet to interact with your port 53. isn't that a good idea?

The reason behind running it on different port on my home PC is because outgoing 53 is blocked at my work place.

My requirement is only to resolve DNS using a server which is outside my office network and hopefully running DNS on some other port than 53.

Oh... then the only idea I have here is to use a tool like openvpn or something.
Out of other ideas.
Interesting question.
It better fits in "Networking" forum.

I didn't suggest an "http" proxy. Maybe YOU should read once again. :tisk:

Better yet just blow it out your wazoo.

Spam removal.

@OP
You can use forwarders: