sockets - Connecting to a WAN server in C# -

i wondering if possible connect listening server not on lan instead on wan. changes have make allow this?

lan, man , wan relative terms used describe size of network; relate hardware layout. hardware intentionally transparent socket programming. there's no need concern these items.

if have difficulty connecting into:
nat/firewalls: block stuff
routing: particularly subnets , private ip's.
telnet: simple way see if can connect tcp server on net try telnet it.

afa programmatic testing, recommend simple chat application. great learning tool beginners. use working socket application before writing new 1 in order work out network kinks prior development.