:26
(TCP/UDP)
Medium Risk
RSFTP
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TCP/UDP — Email
Port Overview
Port Number
26
Service Name
RSFTP
Transport Protocol
TCP/UDP
Category
Email
Security Risk
Medium
Port Range
Well-Known (0-1023)
What is Port 26?
Port 26 is unassigned by IANA but is commonly used as an alternate SMTP port by some ISPs and hosting providers to bypass port 25 blocking. Also occasionally referred to as RSFTP.
TCP/UDP
Email
Security Considerations
Port 26 (RSFTP) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.