TCP Port 444 – snpp

About TCP Port 444

Port 444 is registered with the Internet Assigned Numbers Authority (IANA) for snpp. The IANA description reads: ‘Simple Network Paging Protocol’. This port appears in 2 IDS rules and does not have notable malware activity indicators in our data.

IDS Rule References

2 IDS / security rules reference TCP port 444. 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 1): attempted-admin (2).

Sample rule descriptions for TCP port 444:

• ET EXPLOIT Possible Microsoft Exchange RCE Inbound M1 (CVE-2021-34473)
• ET EXPLOIT Possible Microsoft Exchange RCE with Python PSRP Client UA Inbound (CVE-2021-34473)

Data Sources

This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry and Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range).