After a little tweaking by someone, Syphon Filter: The Omega Strain for PS2 is now back online! Now hosted on a 24/7 DNS server thanks to Bobz of THPS.info!
Here are some images of me accessing Syphon Filter: The Omega Strain online:
(Logging in online)
(Online Command Center)
(Hosting game lobby/mission)
In order to play online, just set your Primary DNS Server in your PS2 Network Configuration to:
Put your secondary DNS to your router IP
As a bonus, this DNS configuration will also allow you to play any of the Tony Hawk PS2 games, Amplitude, My Street and Tribes: Aerial Assaultonline as they, too, are hosted by Bobz)
If you would like to schedule a time to play, reply to this thread or schedule a game day over at PS2OnlineGaming.com.
See you online!
Special thanks to FreddY for providing the hosting method and to Bobz of THPS.info for hosting Syphon Filter: The Omega Strain 24/7.