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| Appendix A Common Services |
| Table 175 Commonly Used Services (continued) | |||
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| NAME | PROTOCOL | PORT(S) | DESCRIPTION |
| POP3 | TCP | 110 | Post Office Protocol version 3 lets a |
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| client computer get |
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| POP3 server through a temporary |
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| connection (TCP/IP or other). |
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| PPTP | TCP | 1723 | |
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| enables secure transfer of data over |
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| public networks. This is the control |
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| channel. |
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| PPTP_TUNNEL | 47 | PPTP | |
| (GRE) |
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| Protocol) enables secure transfer of |
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| data over public networks. This is the |
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| data channel. |
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| RCMD | TCP | 512 | Remote Command Service. |
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| REAL_AUDIO | TCP | 7070 | A streaming audio service that |
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| enables real time sound over the web. |
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| REXEC | TCP | 514 | Remote Execution Daemon. |
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| RLOGIN | TCP | 513 | Remote Login. |
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| RTELNET | TCP | 107 | Remote Telnet. |
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| RTSP | TCP/UDP | 554 | The Real Time Streaming (media |
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| control) Protocol (RTSP) is a remote |
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| control for multimedia on the |
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| Internet. |
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| SFTP | TCP | 115 | Simple File Transfer Protocol. |
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| SMTP | TCP | 25 | Simple Mail Transfer Protocol is the |
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| Internet. SMTP enables you to move |
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| messages from one |
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| another. |
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| SNMP | TCP/UDP | 161 | Simple Network Management |
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| Program. |
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| TCP/UDP | 162 | Traps for use with the SNMP | |
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| (RFC:1215). |
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| TCP | 1521 | Structured Query Language is an | |
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| interface to access data on many |
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| different types of database systems, |
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| including mainframes, midrange |
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| systems, UNIX systems and network |
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| servers. |
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| SSH | TCP/UDP | 22 | Secure Shell Remote Login Program. |
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| STRM WORKS | UDP | 1558 | Stream Works Protocol. |
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| SYSLOG | UDP | 514 | Syslog allows you to send system logs |
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| to a UNIX server. |
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| TACACS | UDP | 49 | Login Host Protocol used for (Terminal |
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| Access Controller Access Control |
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| System). |
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| 475 |
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