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| Subject: | [Snort-sigs] fp on sid:2049 |
|---|---|
| Date: | Sun, 17 Dec 2006 10:35:25 -0500 |
a random '02' in a dns query will trigger this signature if 'target' is a dns server who just happens to be running the dns client on port 1434 (or a windows box that could not get netbios resolution and drops back to dns) alert udp $EXTERNAL_NET any -> $HOME_NET 1434 (msg:"MS-SQL ping attempt"; content:"|02|"; depth:1; reference:nessus,10674; classtype:misc-activity; sid:2049; rev:4;) suggest !$DNS_SERVERS or someone who is well versed in dns can suggest a !content for this? 12/17-10:22:18 UDP 81.198.190.2:53 --> 12.40.255.132:1434 000 : 02 B9 84 83 00 01 00 00 00 01 00 00 03 6E 73 32 .............ns2 010 : 06 61 6C 74 61 76 61 02 6C 76 00 00 01 00 01 06 .altava.lv...... 020 : 61 6C 74 61 76 61 02 6C 76 00 00 06 00 01 00 00 altava.lv....... 030 : 0E 10 00 28 04 6E 73 2D 31 C0 1F 0A 68 6F 73 74 ...(.ns-1...host 040 : 6D 61 73 74 65 72 C0 1F 77 92 F7 D9 00 00 03 84 master..w....... 050 : 00 00 02 58 00 01 51 80 00 00 0E 10 ...X..Q.....
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