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Capturing traffic with tcpdump on Linux CentOS 5.7 machine running Apache httpd and analyzing in Wireshark.

IE browser user-agent is somethimes captured fine in both the http log and network traffic captured http get request. And sometimes only in the http log.

However the BlackBerry 7 (9810 Torch) browser 'user-agent' string is captured in http log, but is never in the network traffic captured http get request.

Why is the 'user-agent' not in the http get request network traffic capture?


HTTP Log Entry:

n.n.n.n - - [02/Mar/2012:19:00:20 -0800] "GET /bbua.html HTTP/1.1" 200 467 "" "Mozilla/5.0 (BlackBerry; U; BlackBerry 9810; en-US) AppleWebKit/534.11+ (KHTML, like Gecko) Version/ Mobile Safari/534.11+"

n.n.n.n - - [02/Mar/2012:19:37:07 -0800] "GET /bbua.html HTTP/1.1" 200 467 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET CLR 1.1.4322; InfoPath.3; MS-RTC LM 8; .NET4.0C; .NET4.0E)"

Network Traffic HTTP Get Capture:

GET /bbua.html HTTP/1.1 Accept-Language:

asked 02 Mar '12, 19:48

NOYB's gravatar image

accept rate: 0%

edited 03 Mar '12, 08:30

SYN-bit's gravatar image

SYN-bit ♦♦

The proper way to answer your own question, is to do exactly that :-)

I'll edit your question and put your own answer in a answer for you, so people can lrean from your experience too...

(03 Mar '12, 08:29) SYN-bit ♦♦

Never mind. I figured it out about 30 seconds after hitting the submit button.

tcpdump -s options (packet truncation).

permanent link

answered 03 Mar '12, 08:30

SYN-bit's gravatar image

SYN-bit ♦♦
accept rate: 20%

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question asked: 02 Mar '12, 19:48

question was seen: 19,589 times

last updated: 03 Mar '12, 08:30

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