UNIX for Dummies Questions & Answers

Hi all,

Is it possible to define different ports for one services.
For examplehave I've a SMPP service on port 6000, and I want add
port 6001, and 6002, and 6003, for the SMPP service.

If it's possible? how can we proceed? is it just by modifiying the /etc/services file?

Thanks for your help,

Jeremy

Any help will be highly appreciated.

The /etc/services is simply a mapping by which various different programs use the getservbyname and getservbyport calls to map between the ports and names various services use.

You can have multiple lines but exactly what happens when you do so will depend on the implementation of getservbyname and getservbyport. On Solaris the first matching entry in the /etc/services file is used so multiple entries dont make much sense other than to provide a human readable record.

Depends on the service... Usually there are parameters which allow you to do so...
For instance, whith sshd, you just need to create different config files and modify the line "Port" to the values you want. Then launch each server whit its corresponding config file...