iptables dyndns etc..

any help please.....
Linksys 54gl PPOE- dlink modem-bridge mode.One PC NIC static IP - eth1.PC is share server, ports are forward in router and are open dyndns adress also,with certain emu sharing is ok.I need some IPTABLES script or rules etc.. in the following way I supose.1 udp port open, 1 tcp port open, internet port for surfing is open and host-dns throug in/out to my peer.All the rest, strictly closed ,21,22,23, all close ..
I hope I have managed to explain, and also I hope any solution or some skript,rule, etc for the above problem.

thanks to all

 

Can you explain a bit more what you're trying to achieve?

 

ipzables

I need iptables rules to specify, allow conection in from my dyndns client and out to my dyndns client.I know,I see somewhere on internet this rule but my googling no sucsses tempoarly.

thanks

 

Doesn't your router support DynDNS? If it does, you can configure this directly on the router.