| Service |
Port Type |
Port Number |
| File Transfer Protocol (FTP)---Data |
TCP |
20 |
| FTP---Commands |
TCP |
21 |
| Telnet |
TCP |
23 |
| Simple Mail Transfer Protocol (SMTP)---E-mail |
TCP |
25 |
| Terminal Access Controller Access Control System (TACACS) |
UDP |
49 |
| Domain Name Server (DNS) |
TCP and UDP |
53 |
| Trivial File Transfer Protocol (TFTP) |
UDP |
69 |
| finger |
TCP |
|
| SUN Remote Procedure Call (RPC) |
UDP |
111 |
| Network News Transfer Protocol (NNTP) |
TCP |
119 |
| Network Time Protocol (NTP) |
TCP and UDP |
123 |
| NeWS |
TCP |
144 |
| Simple Network Management Protocol (SNMP) |
UDP |
161 |
| SNMP (traps) |
UDP |
162 |
| Border Gateway Protocol (BGP) |
TCP |
179 |
| rlogin |
TCP |
513 |
| rexec |
TCP |
514 |
| talk |
TCP and UDP |
517 |
| ntalk |
TCP and UDP |
518 |
| Open Windows |
TCP and UDP |
2000 |
| Network File System (NFS) |
UDP |
2049 |
| X11 |
TCP and UDP |
6000 |
