Draytek Router Firewall Logs

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Hi,

Anyone know how to decode these please?

New router, new FW.

Log does not follow the format given on the Draytek website.

See sample line below:

2014/10/28 11:44:17 -- [DOS][block][tcp_flag, scanner=fin_wo_ack][192.168.2.19:63760->173.252.102.16:443][TCP][HLen=20, TLen=48, Flag=SF, Seq=3973794869, Ack=0, Win=65535]

I know the 192.168.2.19 ip address, it is an iPhone authorised to connect to out network.

The 173.252.102.16 resolves to a Facebook address.

To me this seems like an outgoing Denial Of Service attack on Facebook by an iPhone?

I get virtually identical logs on 2 devices, both iPhones, both from authorised users, however, the only thing in common is that they have been connected to a free university student wifi network at one of the local Uni's.

I can get the date/time bit, and obviously trace the ip's not sure what the ports are, is this a DOS attack from our side?

What does the rest mean?

Anyone please?

Also trying to research this myself, but wondering if anyone else has seen such.

 

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