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Common Ports
Question | Answer |
---|---|
FTP Data Port | TCP 20 |
FTP Control Port | TCP 21 |
SSH | TCP 22 |
SCP (uses SSH) | TCP 22 |
SFTP (uses SSH) | TCP 22 |
Telnet | TCP 23 |
SMTP | TCP 25 |
TACACS+ | TCP 49 |
DNS name queries | UDP 53 |
DNS zone transfers | TCP 53 |
TFTP | UDP 69 |
HTTP | TCP 80 |
Kerberos | UDP 88 |
POP3 | TCP 110 |
SNMP | UDP 161 |
SNMP trap | UDP 162 |
NetBIOS (TCP rarely used) | TCP/UDP 137 |
NetBIOS | UDP 138 |
NetBIOS | TCP 139 |
IMAP4 | TCP 143 |
LDAP | TCP 389 |
HTTPS | TCP 443 |
SMTP SSL/TLS | TCP 465 |
IPsec (for VPN with IKE) | UDP 500 |
LDAP/TLS | TCP 636 |
LDAP/TLS | TCP 636 |
IMAP SSL/TLS | TCP 993 |
POP SSL/TLS | TCP 995 |
L2TP | UDP 1701 |
PPTP | TCP 1723 |
Remote Desktop Protocol (RDP) | TCP/UDP 3389 |
Microsoft SQL Server | TCP 1433 |