Hello... I have my domain (OliXNet.com) and I have a server and one client on LAN. I would like to access that client with address something.OliXNet.com. Server is running on Mandrake 10.1. And I'm new to Linux.
Thank you very much

I think you need 2 internet IP's for that

Access the client how, Is it hosting a website? Do you want to telnet/ssh to it? FTP to the client? It is most definitely possible and you don't need a second IP.

I would like to access client trough SSH, FTP and to play some games online without use of public servers.

What services do you want to acces on that LAN station?
You can configure in DNS zone OliXNet.com that something is your IP address
( if your public IP is let's say 193.1.1.1.add a line like this at the end of olixnet.com ;
something A 193.1.1.1)

Restart bind.

Finally you have to DNAT requests to that machine
iptables -t nat -A PREROUTING -m tcp -p tcp --dport 22 -j DNAT --to 192.168.1.1

iptables -t nat -A PREROUTING -m tcp -p tcp --dport 21 -j DNAT --to 192.168.1.1

Make sure that the machine 192.168.1.1 has internet access

Thank you for the answer!
But this will redirect all the requests on ports 21, 22 to the LAN client. I want to redirect only requests going to client.olixnet.com. Other requests (going to eg. server.olixnet.com) should be handled by the server. Sorry, I probably asked incorrectly.

cmon.. noone knows? Please..

Both Oddo and I figure we might be able to help, but we have no idea what services/protocols you want access to.
Are you running your own DNS or is that service provided by someone else.

It's not my own DNS server. I would like to access ports 21, 22, maybe 80 and some gaming ports. So FTP, SSH, HTTP and games.. Thank you very much for the answers

Ok...there is no problem...You can "remap" your ftp and ssh daemons on lan station to listen on different ports, let's say ssh-2222, and ftp 2121( of course if your ISP doesn't drop theese requests). Then you DNAT 2222 and 2121 like this
iptables -t nat...... --dport 222 -j DNAT --to 192.168.x.x:22

About your subdomain something:

I dig for olixnet.com and I have learned out that the authority DNS server is ns.forpsi.net belonging to IHOLDINGS.COM, INC.
Is this your provider? I guess you can ask them to add a subdomain in your zone.( it should be written in the contract or the rules you got when you bought the domain).
Anyway I advise you to do the DNAT first, try from somewhere outside, and than talk to your ISP.

Good luck

Yes, that`s my isp. I know about this, but is there any way to forward all the requests going to client.olixnet.com to my client? Like this: Server gets a request to client.olixnet.com:80, so it sends it to client.olixnet.com:80 or serverg gets a request to client.olixnet.com:7979 (no matter what this is), so it sends it to client.olixnet.com:7979. I mean is there any way to forward all the traffic going to client.olixnet.com to that client?
Sorry, if this is a dumb question and sorry, for loosing your time, but I need to know... Thanx

In my mind, if you don't have direct control over your domain's DNS and zone configurations, it ain't going to happen. Maybe oddo's suggests can work out, maybe you'll have to run a small DNS slave on your server?