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IPFYI
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200

IMPLink

Low Risk

TCP — Other

Port Overview

Port Number 200
Service Name IMPLink
Transport Protocol TCP
Category Other
Security Risk Low
Port Range Well-Known (0-1023)

What is Port 200?

IMPLink (Interface Message Processor Link) was used in the early ARPANET to connect hosts to Interface Message Processors. It is one of the historical ports assigned during the early development of the internet.

TCP Other

Security Considerations

Port 200 (IMPLink) 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 — Other

43 WHOIS 63 Whois++ 104 DICOM 105 CCSO Nameserver 170 Network PostScript 201 AppleTalk 213 IPX 264 BGMP
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