[GNUnet-developers] Re: [Help-gnunet] udp traffic on port 65535

[Christian Grothoff]

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On Sunday 04 August 2002 02:27 pm, Peter Presslein wrote:
> HighLow,
>
> since i installed gnunet 0.4.4 i have a lot of udp traffic
> on port 65535 going outside to other nodes. blocking this
> traffic with the firewall has no effect on the funktionality
> of gnunet.
>
> any hints?

The UDP port to send traffic out on is chosen mostly at random by the kernel 
(GNUnet does as far as I recall not specify that 2086 should be used for 
outbound traffic). I don't know if we should. It could also be NFS traffic if 
your home-directory is on an NFS volume and gnunetd accesses files. 

How blocking the traffic can not cause problems, well, if you're only blocking 
parts of gnunet's traffic, the protocol is resistant to attacks in the sense 
that it will still eventually get through. Only if you block all your inbound 
or outbound traffic your node will stop to be operational. But of course, 
blocking gnunet traffic will reduce the efficiency of your node.

Why is this an issue anyway?

Christian
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