Which port is used by the Syslog service?

Which port is used by the Syslog service?

• A. 520
• B. 111
• C. 514
• D. 445

Answer: (C)

Syslog uses a dedicated port for receiving messages from devices and hosts. The standard Syslog protocol (as defined in RFC 3164) uses UDP port 514, so this is the port you’d typically configure on a syslog server to collect logs. Some implementations may also support TCP on 514 or other secure variants like TLS on a different port, but the default and most common port for Syslog is 514. The other ports relate to different services: 520 is used by the Routing Information Protocol (not syslog), 111 is the RPC/RPCbind service, and 445 is used for Windows SMB/CIFS.

Syslog uses a dedicated port for receiving messages from devices and hosts. The standard Syslog protocol (as defined in RFC 3164) uses UDP port 514, so this is the port you’d typically configure on a syslog server to collect logs. Some implementations may also support TCP on 514 or other secure variants like TLS on a different port, but the default and most common port for Syslog is 514.

The other ports relate to different services: 520 is used by the Routing Information Protocol (not syslog), 111 is the RPC/RPCbind service, and 445 is used for Windows SMB/CIFS.