Subject: Re: Mapping ports ?
To: Rakhesh Sasidharan <>
From: Alexander Frolkin <>
List: netbsd-users
Date: 03/10/2001 20:18:45

> As of now, ftp-ing to or invokes the ftpd of port 21.
> What I am trying to do is that when I type "ftp", it
> automatically connects to port 821 (wu-ftpd) instead of port 21.  I could
> do this explicitly with "ftp", but is it possible to
> do it automatically ?

Try changing the ftp line in /etc/services from 21/tcp to 821/tcp.

> PS: Quite often I have seen notations like this: or
> etc.  What do they mean (the / part) ?

/32 refers to a netmask of (0xffffffff), i.e. all 32
bits are `1'. /24 refers to, etc.

So, refers to a host with address and refers to a C-class subnet with address 10.0.0.