[Openswan Users] scp over an openswan tunnel hangs

[Paul Wouters]

On Wed, 30 Jun 2004, Graham Leggett wrote:

> I cannot use scp to transfer files from box A to box B. Boxes A and B 
> are connected via a openswan tunnel.
> 
> [root at rachel certs]# scp 
> root at chandler:/etc/postfix/certs/smtp.test.co.za-host* .
> root at chandler's password:
> smtp.test.co.za-hostCert.pem                   0%    0     0.0KB/s 
> --:-- ETA
> 
> The transfer hangs at this point, having transferred 0 bytes.
> 
> I have a feeling it is due to the back channel that scp is trying to 
> create to connect to box B - anyone know what needs to be done to make 
> scp work?

My experience is that ssh/scp hangs are normally due to mtu problems. Or
rather, changing the mtu fixes whatever the problem is. Try setting an
mtu of 1400 on your ethernet device.

Paul