Srcds online confusion

[airsoftsniper1005]

It worked for a while now it doesn't go on-line for other plays to join... any reason why this would happen?

[realchamp]

What have you changed? Also make sure your external or internal IP did NOT change.

[Reflex]

Check the windows firewall.
Other firewalls?
Firewall in antivirus?

Maybe you changed something in your router, and putted a firewall in your router on?