[tor-relays] Does TOR need TUN/TAP

Sebastian Pfeifer sebastian at pfeifer.or.at
Tue Nov 12 08:51:19 UTC 2013

On 2013-11-11 22:15, Drake Wilson wrote:
> Quoth Sebastian Pfeifer <sebastian at pfeifer.or.at>, on 2013-11-11 20:36:02 +0100:
>> Hello!
>> A short question I didn't found in the FAQ or with Google: "Does Tor (as
>> an exit node) need a TUN or TAP device"?
> It does not require tun/tap; Tor runs over and exits through TCP
> sockets exclusively, last I checked.  However:
Thank you.
>> servers without TUN/TAP (VRS)
> If by this you mean something like OpenVZ or a similar "container"
> implementation, such that your node shares kernel memory with other
> containers, beware of limitations on the number of sockets you can
> have open at once.  Tor keeps a large number of connections open
> simultaneously, and if it is not permitted to do this it may not
> function properly.
It is a sort of container but not OpenVZ, although they don't say what 
it is, only that "network resources" are shared so it might be really a 
bad idea to run TOR on it. I will maybe just take the KVM again for my 
new node... I maybe have to go with the smaller server then though that 
has only half of the traffic (500GB/month) and really really low (128MB; 
well it works now on 128MB) RAM... But as I said I don't really have the 
money for things like that.
> Hope this helps.
>     ---> Drake Wilson
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