Port 691

Modified by:

Port 691 is typically used for Link Management Protocol (LMP) in Forthcoming Inter-Domain Routing Protocol (FIRP) networks. It is also used for MS Exchange MRS Replication endpoint communication in Microsoft Exchange Server.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port
Protocol (TCP/UDP)
Title
Description
Port Type
Port 691
tcp
msexch-routing
MS Exchange Routing
WELL KNOWN PORT
Port 691
udp
msexch-routing
MS Exchange Routing
WELL KNOWN PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
TCP UDP Ports
Other ports
Port 3343
Ports those registered with IANA are shown as official ports. The same port number
Port 3468
Port 3468 is commonly used for the Simple Network Management Protocol (SNMP) traps, which
Port 10321
Port 10321 is used for communication between clients and servers for the official ICQ
Port 3390
Port 3390 is used for remote desktop access (RDP) on some computers, particularly those
Port 647
Port 647 is not a well-known port number for any specific service or application.
Port 1138
Port 1138 is not a well-known or registered port number, so it is not
Port 29920
Port 29920 is commonly used for Call of Duty game servers, specifically for the
Port 1821
Port 1821 is commonly used by the software called VXCR, which is a software
Port 1129
Ports those registered with IANA are shown as official ports. The same port number
Port 3845
Port 3845 is typically used for communication between Cisco routers and services such as
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