← Port Encyclopedia
110

POP3

TCP
Email High Risk
Post Office Protocol v3 — email retrieval in cleartext, credential theft risk

🔍 How to Scan Port 110

nmap -sV -p 110 target
nmap -sV -sC --script=banner -p 110 target
nc -zv target 110

🛡️ Security Considerations

  • Scan port 110 with nmap -sV to identify the exact service and version
  • If POP3 is not needed, close or firewall this port immediately
  • Check for default credentials if a management interface runs on this port
  • Use searchsploit pop3 to find known exploits
  • Monitor traffic on port 110 with Wireshark or tcpdump for anomalies
  • Ensure the service is patched to the latest version to prevent known CVE exploitation

🔗 Related Email Ports

Port 25
SMTP
Port 143
IMAP
Port 465
SMTPS
Port 587
SMTP-Submission
Port 691
MS-Exchange
Port 993
IMAPS
Port 995
POP3S
Port 2525
SMTP-Alt
Port 7071
Zimbra
Port 7078
Zimbra-LMTP

📍 Nearby Ports

Port 105
Port-105
Port 106
Port-106
Port 107
Port-107
Port 108
Port-108
Port 109
Port-109
Port 111
RPCbind
Port 112
Port-112
Port 113
Ident
Port 114
Port-114
Port 115
Port-115
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