Openvpn hanging?

[Reindl Harald]

Am 10.09.2013 14:05, schrieb Timothy Murphy:
> fedora wrote:
> 
>>> I'm having a curious problem communicating with a remote site of mine.
>>> I can access the site with "ssh -Y alfred-vpn" without any problem.
>>> But then any command, eg cat, vim, tail,
>>> that gives more than a minimal response,
>>> causes the connection to hang, that is, to cease accepting any input,
>>> and I see no way to revive the connection
>>> except to kill the sshd entry from another ssh connection to the site,
>>> or else just to close the local window.
>>>
>>> For example, "sudo tail -9 /var/log/messages" works,
>>> but not if I replace 9 with 20.[tim at alfred ~]$ ifconfig tun0
> 
>> Different MTU and fragmentation disabled?
> 
> Thanks for your response.
> But the MTU seems to be 1500 at both ends
> (unless the modem at the remote end can change it?)

that may be true, but we have a cisco router from out ISP
which does not like this on a 100Mbit fiber connection

i had to reduce the MTU for openvpn to 1472 on the openvpn
server as well as on the clieints and the problem you are
describing went away

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