I played around a bit with providing www, ssh, ... from
behind my ADSL router, a ZyYEL Prestige. The machine is
running Linux (SuSE 7.3 professional, kernel upgraded
to 2.4.18). It works but a few questions remain still:
Forwarding the ports 80 and 22 I got www, ssh going.
a) Since ssh works, does it imply that sftp and scp should
work? (I have no clients outside.)
b) Is it possible, or advisable to run an anonymous ftp
using the same technique?
To publish my IP through a dynamic DNS provider I tried
ZoneEdit.com first. Their updating method in ingenious:
you send your userid/passwd through the same router and
their server "sees" the IP. But they didn't give me a
choice in a fixed domain like myname.zoneedit.com
(at least I didn't find any).
At the next stop, DynDNS.org, it was possible to get
myname.dyndns.org but to update the DNS I have to send
the IP explicitly. Furthermore they don't like it if
one "updates" the record regularly even if there are
Now the question: What is the elegent way of monitoring
the ISP-given IP address of the router and, if changed,
sending the new IP to DynDNS?
I'm also interested to know your experience with the
various free dynamic DNS providers.
Your feedback appreciated.