Thanks Jean-Louis.

We have created a VPN for our backup LAN, linking a number of machines over the 
internet. Using Bastille firewall we define tun0 as an internal interface on 
the client machine and then permit UDP_SERVICE_INTERNAL=10080.

This is confirmed by (root@server30506:~)# nmap -sU -P0 10.8.0.18 -p 10080

Starting Nmap 4.03 ( http://www.insecure.org/nmap/ ) at 2007-10-12 17:06 BST
Interesting ports on 10.8.0.18:
PORT      STATE         SERVICE
10080/udp open|filtered amanda


I get the same result when I nmap other working configurations.

Iptables has module ip_conntrack_amanda loaded.

/me pokes a bit further.

Rob


----- Original Message -----
From: "Jean-Louis Martineau" <martineau AT zmanda DOT com>
To: "Rob Dyke" <rob AT comwifinet DOT com>
Cc: amanda-users AT amanda DOT org
Sent: Friday, October 12, 2007 3:17:22 PM (GMT) Europe/London
Subject: Re: amanda client failing with too many dumper retry ... but amcheck 
says its fine...?

It's not a dtimeout problem.

The socket can't be connected, do you have a firewall between client and 
server?

Jean-Louis