Linode Forum

[thoward]

Hi,

This may be a stupid question but I was wondering whether its possible to set up a sub-domain to only be visable between my linodes? I've set up private Ips, but the only way I could think of doing this is to set up a record in the /etc/hosts file.

Any help is appriciated!

[jeremiah]

If you put the domain name in /etc/hosts on both machines, it should work like a charm. :)

[hybinet]

Alternatively, you could add an A record in the DNS, pointing the subdomain to an internal IP address (192.168.x.x). The records would be publicly visible, though.

[thoward]

Yea I thought of the DNS record, but wasn't too sure about it being publicly available. What I might just do is set it up as an external domain then (attempt) to lock the server down to only accept internal connections.

[MrRx7]

thoward wrote: Yea I thought of the DNS record, but wasn't too sure about it being publicly available. What I might just do is set it up as an external domain then (attempt) to lock the server down to only accept internal connections.

From a security standpoint you should be blocking all traffic on the internal lan anyways..

but if you just want a internal domain just use hosts files, would be more secure than using dns.

[mnordhoff]

Security (that is, actual, real security) does not break down if someone knows your IP address. Putting your private IP in the public DNS isn't a problem; anyone could port scan the private network anyway.

Edit: Does not! Does not break down. Oops.

[kbrantley]

http://www.bind9.net/manual/bind/9.3.2/Bv9ARM.ch04.html#id2549203