Appendix A Common Applications and Port Numbers
Protocol/Application | Port Number |
---|---|
DHCP | UDP 67 (sending), 68 (receiving) |
DNS | UDP, TCP 53 |
FTP | TCP 21 |
HTTP | TCP 80 |
HTTPS | TCP 443 |
ICA (CGP) | TCP 1494 (2598) |
LDAP | TCP 389 |
LDAPS | TCP 636 |
LDAP(S) to Active Directory Global Catalog | TCP 3268, 3269 |
POP3 | 110 |
RADIUS Authentication | UDP 1812, 1645 |
RADIUS Accounting | UDP 1813, 1646 |
RDP and Terminal Services | TCP 3389 |
RPC Locator Service | TCP 135 |
SSH | TCP 22 |
SMTP | TCP 25 |
SNMP | UDP 161 |
SQL Server | TCP 1433 |
TACACS+ | UDP/TCP 49 |
Telnet | TCP 23 |
WINS | TCP 137 |
WINS Replication | TCP 42 |
Get Security for Microsoft Windows System Administrators now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.