asked on

Parse DNS log

Hi all,

I have a problem parse DNS log. (On Linux)
Can you help me parse DNS log with tcpdump with the format?

timestap;ip;mac;domain

Thank you very much.

arnold

tcpdump is a packet capture.

post a line from the dns log.
and see what passing the line through to the command below returns.
awk ' { print $1,$2,$8,$10 } '
The $1,$2 should be the date/time, $8 IP, $10 domain not sure MAC is included in a log from DNS

ldvhai

ASKER

Hi arnold,

These log messages: ( tcpdump -i eth0 -l -vvve dst port 53 )

13:50:03.255611 27:54:ec:89:9b:48 (oui Unknown) > 50:2d:a1:4b:d2:16 (oui Unknown), ethertype IPv4 (0x0800), length 79: (tos 0x0, ttl 128, id 3104, offset 0, flags [none], proto UDP (17), length 65)
CHRayT530.lan.65371 > HONEYNET.lan.53: [udp sum ok] 27141+ A? clients5.google.com. (37)
13:50:03.266929 27:54:ec:89:9b:48 (oui Unknown) > 50:2d:a1:4b:d2:16 (oui Unknown), ethertype IPv4 (0x0800), length 75: (tos 0x0, ttl 128, id 3105, offset 0, flags [none], proto UDP (17), length 61)
CHRayT530.lan.52645 > HONEYNET.lan.53: [udp sum ok] 5364+ A? plus.google.com. (33)
13:50:03.270809 27:54:ec:89:9b:48 (oui Unknown) > 50:2d:a1:4b:d2:16 (oui Unknown), ethertype IPv4 (0x0800), length 75: (tos 0x0, ttl 128, id 3106, offset 0, flags [none], proto UDP (17), length 61)
CHRayT530.lan.63995 > HONEYNET.lan.53: [udp sum ok] 54501+ A? www.gstatic.com. (33)
13:50:04.080532 27:54:ec:89:9b:48 (oui Unknown) > 50:2d:a1:4b:d2:16 (oui Unknown), ethertype IPv4 (0x0800), length 75: (tos 0x0, ttl 128, id 3107, offset 0, flags [none], proto UDP (17), length 61)
CHRayT530.lan.51048 > HONEYNET.lan.53: [udp sum ok] 17380+ A? apis.google.com. (33)

Format:
timestap;ip;mac;domain

Help me!

Thanks,

ASKER CERTIFIED SOLUTION

arnold

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