>After substantial googling efforts, I have not been able to find out 
>what underlies this statement

>  Sometimes very strict firewalls forbid you to connect to rsync 
>services.

<snip>

>Yet, I have found that since moving to m0n0wall, I can't get fink to 
>rsync.  I am using the default pass LAN -> any rule.  Is there 
>something special about rsync that requires particular rules.  If so 
>what?

I don't know about fink but I can assure you that I've been able to use
rsync just fine under m0n0wall.  This was using cwRsync on a PC.  No special
rules.