Does Linux know its domain?

ens_leader · Tux's lil' helper Joined: 27 Feb 2005 Posts: 105

I have a domain which points to my server. Within this domain are subdomains. My question is, if I point a subdomain to my server, and connect to it (say, using ssh), is there a way that it could know that it was contacted by the subdomain? I want to do this so I can have each subdomain be something i.e. (1.mydomain.com = ssh) (2.mydomain.com = telnet) All on the same machine. Ports would stay the same. Any way of having linux recognize how it was contacted?

lagalopex · Guru Joined: 16 Oct 2004 Posts: 565

If you use one dedicated ip for each subdomain, no problem.
But all-on-one-ip is protocol dependend, e.g. apache supports vhosts.

think4urs11 · Posted: Tue Sep 16, 2008 10:06 pm Post subject:

if i understand the requirements correctly then the answer is no.
As lagalopex already explained view services like e.g apache can act based on hostname used but other services (sshd, telnetd, snmpd, ntpd, ...) cannot.
_________________
Nothing is secure / Security is always a trade-off with usability / Do not assume anything / Trust no-one, nothing / Paranoia is your friend / Think for yourself