Should port 444 be open on my firewall?

Port 444 is generally safe to have open. Apply standard security practices: keep software updated and monitor access logs.

What transport protocol does port 444 use?

Port 444 (SNPP) uses the TCP transport protocol and falls under the Messaging category.

:444 (TCP)

SNPP

Q: Is port 444 (SNPP) dangerous?

Port 444 is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose with standard security practices.

Low Risk

TCP — Messaging

Port Overview

Port Number 444

Service Name SNPP

Transport Protocol TCP

Category Messaging

Security Risk Low

Port Range Well-Known (0-1023)

What is Port 444?

Port 444 is assigned to SNPP (Simple Network Paging Protocol), defined in RFC 1861, used to send pages to paging systems. Largely obsolete.

TCP Messaging

Security Considerations

Port 444 (SNPP) is classified as low risk. This service uses encryption or has a minimal attack surface, making it relatively safe to expose.

Recommendation: Standard security practices apply. Keep software updated and monitor access.

Related Ports — Messaging

18 MSP 87 ttylink / link 98 TACNews 99 Metagram 119 NNTP 169 SEND 194 IRC 218 MPP

Related Terms

ARP FTP HTTP ICMP IMAP NTP