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Well Known Ports
| Port | Usage |
|---|---|
| 20 | FTP - Data |
| 21 | FTP - Control |
| 22 | SSH |
| 23 | Telnet |
| 25 | SMTP |
| 37 | TIME |
| 49 | TACACS |
| 53 | DNS |
| 67 | DHCP Server (UDP) |
| 68 | DHCP Client (UDP) |
| 69 | TFTP (UDP) |
| 79 | Finger |
| 80 | HTTP |
| 110 | POP3 |
| 111 | RPC (UDP) |
| 119 | NNTP |
| 123 | NTP |
| 137-139 | NetBIOS |
| 161 | SNMP |
| 162 | Trap (UDP) |
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Last modified: May 28 2007.
Last modified: May 28 2007.