small patch for ngctl
Brian Candler
B.Candler at pobox.com
Fri May 19 05:13:02 PDT 2006
On Fri, May 19, 2006 at 05:25:16PM +0900, Ganbold wrote:
> Rec'd data packet on hook "qqqq":
> 0000: ff ff ff ff ff ff 00 14 6c 2e 23 71 08 00 45 00 ........l.#q..E.
> 0010: 00 4e 17 4e 00 00 80 11 a0 c6 c0 a8 00 3b c0 a8 .N.N.........;..
> 0020: 00 ff 00 89 00 89 00 3a b1 dc 80 8f 01 10 00 01 .......:........
> 0030: 00 00 00 00 00 00 20 45 4f 45 42 46 44 45 42 45 ...... EOEBFDEBE
> 0040: 42 43 41 43 41 43 41 43 41 43 41 43 41 43 41 43 BCACACACACACACAC
> ...
>
> Is it what it supposed to handle?
Looks like a valid ethernet frame to me;
ff:ff:ff:ff:ff:ff - destination MAC addr (broadcast)
00:14:6c:2e:23:71 - source MAC addr
0800 - protocol (IP)
45 00 - IPv4
00 4e - datagram length
17 4e 00 00 - ID, flags, frag offset
80 - TTL
11 - protocol (UDP)
a0 c6 - header checksum
c0 a8 00 3b - source IP: 192.168.0.59
c0 a8 00 ff - destination IP: 192.168.0.255
00 89 - source port 137
00 89 - destination port 137
00 3a - length
b1 dc - UDP checksum
... - ... data
So I'd say this is some Windows machine broadcasting NetBIOS crap around
your network :-)
Regards,
Brian.
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