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eMule UDP Port
Port 4672 is commonly associated with eMule peer-to-peer (P2P) file-sharing traffic, particularly using the UDP protocol for network communication purposes such as server discovery, peer discovery, and control messages within the eDonkey network. Although primarily unofficial, it has become a de facto standard port for many eMule users to facilitate smoother operation and better connectivity across firewalls and NAT devices..
Port 4672 is widely utilized by eMule, a popular open-source P2P file-sharing application compatible with the eDonkey2000 network. eMule leverages this UDP port to handle auxiliary communication that complements its primary TCP-based file transfers. This includes tasks such as finding new peers, maintaining Kad distributed hash tables (DHT), and transmitting control signals like queue requests.
Specifically, UDP on port 4672 is crucial for firewall/NAT traversal, as it allows eMule clients to maintain connectivity even when direct inbound TCP connections are blocked. It supports Kad network functionality, where nodes exchange routing information efficiently via UDP packets, helping to decentralize search and improve resilience of the network.
While eMule can be configured to use custom ports, port 4672 has become a widely accepted default for these UDP-based operations, making it easier for users and network administrators to identify and potentially manage eMule traffic within their networks.