rsync problem behind a router

[Paul Haas]

On Tue, 17 Dec 2002, Chad Moss wrote:

> I have used rsync on many systems, and never had a problem.  I am
> stumped on what to do with this.
> I have a box behind a LinkSys router and I can not "push" or "pull" data
> to or from it from anywhere.

Does it work for very small transfers?

Does it work with --bwlimit set low enough so you never saturate your
link?

I can not rsync large amounts of data through my LinkSys without using the
--bwlimit option.  My LinkSys is doing NAT.  I think it loses track of the
address translation for the ssh connection under load.  Then the ssh
session just stops.  I use --bwlimit=100, which is a third of the
available bandwidth on the far end, and it just works.

It's not a problem particular to rsync, other ssh sessions sometimes hang
too.  I just have more problems with rsync because I move more data that
way.  I always use "screen" for interactive sessions.

> When I try, it logs into the remote server, gets the file list and just
> stops.

Could be a different problem, mine would often transfer quite a few files
before stopping.

> The remote server shows a process running until I control-c out of
> it.when I do that, I get:

> rsync error: received SIGUSR1 or SIGINT (code 20) at rsync.c(229)
> rsync error: received SIGUSR1 or SIGINT (code 20) at main.c(785)

> The command I am using is:
> rsync -avz -e ssh root at myserver.com:/home
> <mailto:root at myserver.com:/home%20/home/backup/servername/>
> /home/backup/servername/

> I have forwarded ports 22 and 873 to that machine, and I have tried
> putting it in the DMZ.
> The results do not seem to change.

> Thanks.

--
Paulh