Mapping Predefined and Custom Services in a VIP
You can use virtual port numbers for well-known services when running multiple server processes on a single machine. For example, you can run two FTP servers on the same machine, one server on port 21 and the other on port 2121. Only users who know the virtual port number can append it to the IP address in the packet header to gain access to the second FTP server.
You can map predefined and custom services in a VIP. A single VIP can support custom services with:
- The same source and destination port numbers but different transports.
- Single port entries (by default).
- Multiple port entries, when creating multiple service entries under a VIP (one service entry in the VIP for each port entry in the service).
- Any destination port number or number range from 1 to 65,535, not just from 1024 to 65,535.
