zephura schreef op 24-02-2017 8:15:
> Maybe I don't get the point, but
> For bad reasons, I've already have the same ssh connection during 3
> days...
> Ok that was through a vpn tunnel, but even I should allow ssh
> connection in vuurmuur ...

I just don't know what is causing it. Maybe it is a mechanic that 
packets get blocked because they end up in a wrong state in the 
firewall. There is also LXC container that has a bridge with an IP on 
the same interface (device) and the Linux kernel sometimes does weird 
stuff when you use a bridge in the wrong way. So I have to find out 
what's causing it but for that I first have to turn Vuurmuur off and see 
if I can reproduce the issue.

The connection is not even over VPN.

"tar -xvzf" or similar (the -v) is a very dangerous thing right now ;-). 
The tar process will hang if it cannot output all the data, the lines of 
text.

Basically there is two things I can test:

- bring down the LXC bridge
- bring down Vuurmuur

Either which could produce the solution but troubleshooting IPtable 
rules is not something you do in your spare time... while eating a 
pizza, so to say.

I have now a script running on a relatively fresh connection (ssh) that 
will output "journalctl | cat" to the console every 6 seconds ;-) and 
records the date for it in a file. Once the connection clogs up, I will 
see the latest date. It is now 08:56 when I started it. Nothing happened 
thus far.

It is on older connections that "tar -v" becomes very dangerous.

It happens on both the host and the LXC container (that is accessed 
through the host). At first I thought it was jut the LXC container, but 
it is both.

Thank you for your time :p.

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