Since the EECH Central wiki is little outdated http://www.eechcentral.com/wiki/index.php?title=Multiplayer
and we've gotten too view people and need more testing,
please setup Your routers correctly for MP
dplay TCP 2300-2400 server 2300-2400
dplay UDP 2300-2400 server 2300-2400
dplay TCP 47624 server 47624
dplay8 UDP 6073 server 6073
dplay UDP 47624 server 47624
+ ICMP echo in both directions.
and set usemaster=1 in eech.ini
for every game reported to http://hoxdna.org/eech/
if You are on a broadband internet connection,
I suggest You help each other connecting and coordinate MP session in a temporary EECH channel on the SimHQ TS 3 Server:http://simhq.com/forum/ubbthreads.php/topics/3137414.html
or simply exchange Skype accounts, mine is same like my forum nick, I'm usually on between 0900-2100 UTC.