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7 Network Services

WCCP 101

WCCP support on Cisco router is a feature used to intercept traffic (usually HTTP requests) and redirect it to a cluster of content engines. This feature is mainly used for webcaching or WAAS implementations. The WCCP protocol is a control protocol used by router and Content Engines to communicate with …

File Transfer 101 – TFTP & FTP

1. TFTP 1.1 TFTP Server You can use a Cisco Router as a TFTP Server, usually used to serve IOS images to other routers. You can also configure the TFTP client using: 1.2 TFTP Client You can use the router as a TFTP Client using a command like: 2. FTP …

HTTP 101

1. HTTP Server To enable the HTTP Server on the Cisco IOS, use: By default, the server runs on port 80. You can change it with: To restrict the clients that can access the HTTP server, use: To enable authentication for the HTTP server, use: If you use AAA authentication …

NTP 101

1. Software Clock Each router has a software clock that is set at initialization according to the hardware clock. The software clock can be updated manually, or automatically using NTP, SNTP or VINES Time Service. The software clock provides the time for time-based ACLs, logging ande debugging messages, and other …