Originally posted by: Dragoon42
I don't have a router
Originally posted by: stuman19
Enable DMZ on your router.
Originally posted by: jamesbond007
Try disabling Windows Firewall. For some reason, when I started hosting games, it wouldn't let others see/connect to my game unless I disabled it, even with the proper ports forwarded. Then when I re-enabled it a few hours later to try and troubleshoot, everything works like a charm!
EDIT: You're not alone!