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Ports Yahoo! Messenger uses!
Yahoo! Messenger services uses a variety of ports.
Service Ports
Chat & Messenger: TCP Port 5050: Client Access only
Insider/Room Lists: TCP Port 80: Client Access only
File Transfer: TCP Port 80: Server Access.
Your ISP may block this port, as its used for web hosting.
You can change port in Messenger, Preferences, File Transfer.
Voice Chat: UDP 5000-5010
TCP 5000-5001: Client Access
If UDP Fails, TCP will be used instead, see below.
WebCam: TCP Port 5100: Client Access
Super Webcam: TCP Port 5100: Server Access
P2P Instant Messages: TCP Port 5101: Server Access
PMs between Buddys may not use the Yahoo! Server, but this is not a requirement.
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