TCP Port 1863 – msnp

About TCP Port 1863

Port 1863 is registered with the Internet Assigned Numbers Authority (IANA) for msnp. The IANA description reads: ‘MSNP’. This port appears in 7 IDS rules and does not have notable malware activity indicators in our data.

IDS Rule References

7 IDS / security rules reference TCP port 1863. Treat that number as context, not a danger score. Many detection rules are written against groups of ports rather than one service, web ports especially, so common web alternate ports inherit large counts while genuinely sensitive services can show few rules or none. Presence in IDS rules does not mean traffic on this port is malicious.

Rule categories (top 2): policy-violation (6), attempted-user (1).

Sample rule descriptions for TCP port 1863:

• POLICY-SOCIAL Microsoft MSN message
• POLICY-SOCIAL Microsoft MSN outbound file transfer request
• POLICY-SOCIAL Microsoft MSN outbound file transfer accept
• POLICY-SOCIAL Microsoft MSN outbound file transfer rejected
• POLICY-SOCIAL Microsoft MSN user search

Data Sources

This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry and Snort Community Rules (GPLv2).