> On 21 Dec 2017, at 06:29, Logforme <[email protected]> wrote:
> 
> My little guard node (855BC2DABE24C861CD887DB9B2E950424B49FC34) have suddenly 
> started to behave strangely. iftop (my "bandwidth monitor"), shows twice as 
> much sent traffic as received traffic. The traffic seems to be distributed to 
> a lot of ip addresses. No ip address stands out as receiving very much 
> traffic: https://imgur.com/a/dAUzc
> 
> Given the last few days of DDoS attacks (my node is still targeted by those) 
> I naturally assume this is another attack.
> First it is lots of connections (mitigated with connection limits)
> Then it is massive amounts of memory per circuit (MaxMemInQueues fixes that)
> And now this.
> 
> Could this be a third attack vector or am I seeing something "normal" (though 
> I often check my bandwidth and I've never seen this before). My node recently 
> got the HSDir flag after the last crash. Could the network be starved for 
> HSDir machines and this is what I'm seeing?

This is normal for HSDirs and directory mirrors, because the requests
are smaller than the responses.

> Being a linux noob I don't know how to figure out exactly what kind of 
> traffic this is. Suggestions gratefully accepted.

Check the logs, but they won't tell you much, and that's deliberate.

T
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