asked on

capture url's windows 7...

I'm setting up a whitelist for a firewall the hard way; I have to login to the remote servers and capture all the url's they use. I have Process Hacker and can see the url's but some are not up there long enough for me to use the info. One url is accessed just once a month for DRM checks and I can't afford to miss that. I need the ability to look at the record of all the url's. I'm guessing that windows 7 records them all but if not, perhaps there is software that does?

Giovanni

You may use a protocol analyzer configured to filter on HTTP/S continuously, where the log file is stored to a centralized share.

Here's an example:

@echo off
setlocal enabledelayedexpansion
rem Requires WinDump @ http://www.winpcap.org/windump/install/
rem        + WinPcap @ http://www.winpcap.org/install/default.htm
rem   OR
rem          TCPDUMP @ http://www.microolap.com/products/network/tcpdump/
echo HTTP monitor v1.0 by Giovanni
set app=windump
set output=\\?\UNC\127.0.0.1\c$\HTTPID.txt
for /f "tokens=4" %%i in ('route print -4 0.*^|find "0.0.0.0"') do (
	if not [%%i]==[Default] (
		for /f "tokens=3 delims=," %%s in ('wmic nicconfig get IPAddress^,SettingID /format:csv^|findstr "%%i"') do (
			for /f "delims=." %%i in ('!app! -D^|findstr "%%s"') do (      
				!app! -i %%i -n dst port 80 or dst port 443
			)
		)>>!output!
	)
)
if exist !output! type !output!

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duncanb7

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Giovanni

Your firewall configured to log all outbound connections to a SYSLOG server (filtered at a later date) is another approach.

If you want to use wireshark, here's a good filter.

(tcp.flags.syn == 1) && ip.dst != 172.16.0.0/16
or for HTTP/S
(tcp.flags.syn == 1) && ip.dst != 172.16.0.0/16 && tcp.dstport == 80 || tcp.dstport == 443

Where 172.16.0.0/16 represents the CIDR notation of your LAN.

Here's a modified version to capture all TCP SYN connections, where the dest ip addr is not on your LAN.

@echo off
setlocal enabledelayedexpansion
rem Requires WinDump @ http://www.winpcap.org/windump/install/
rem        + WinPcap @ http://www.winpcap.org/install/default.htm
rem   OR
rem          TCPDUMP @ http://www.microolap.com/products/network/tcpdump/
echo TCP SYN monitor v1.0 by Giovanni
set app=windump
set output=\\?\UNC\127.0.0.1\c$\synmon.txt
rem modify to central share if desired (e.g. \\?\UNC\server.domain.local\share\path\synmon_%computername%.txt )
for /f "tokens=3,4" %%i in ('route print -4 0.*^|find "0.0.0.0"') do (
	set gw=%%i
	set ip=%%j
	if not [!ip!]==[Default] (
		for /f "tokens=3,4 delims=," %%s in ('wmic nicconfig get IPAddress^,SettingID^,IPSubnet /format:csv^|findstr "!ip!"') do (
			set mask=%%s
			set mask=!mask:~1,-4!
			for /f %%n in ('route print -4^|find "!mask!"') do set net=%%n
			echo ip: !ip!
			echo network: !net!
			echo mask: !mask!
			echo gateway: !gw!
			echo Begin TCP SYN capture on %date% at %time% from %computername% [!ip!/!mask!] as %userdomain%\%username%>>!output!
			for /f "delims=." %%i in ('!app! -D^|findstr "%%t"') do (      
				!app! -i %%i -n "tcp[13] = 2 and not dst net !net! mask !mask!"
			)>>!output!
		)
	)
)
if exist !output! type !output!

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Sample output:

Begin capture on Fri 11/15/2013 at 14:16:53.18 from GSTYLE [192.168.0.88/255.255.0.0] as gstyle\giovanni
14:05:40.807629 IP 192.168.0.88.13412 > 65.55.57.27.443: S 3069452311:3069452311(0) win 8192 <mss 1460,nop,wscale 8,nop,nop,sackOK>
14:05:41.712707 IP 192.168.0.88.13413 > 23.7.198.235.443: S 2695754706:2695754706(0) win 8192 <mss 1460,nop,wscale 8,nop,nop,sackOK>
14:05:41.740652 IP 192.168.0.88.13414 > 65.54.87.241.443: S 1559914944:1559914944(0) win 8192 <mss 1460,nop,wscale 8,nop,nop,sackOK>
14:05:41.741716 IP 192.168.0.88.13415 > 65.54.87.241.443: S 2572514902:2572514902(0) win 8192 <mss 1460,nop,wscale 8,nop,nop,sackOK>
14:05:42.195205 IP 192.168.0.88.13416 > 23.7.198.235.443: S 1813119667:1813119667(0) win 8192 <mss 1460,nop,wscale 8,nop,nop,sackOK>

Syntax Highlighted Ref: http://pastebin.com/DhkNF8wy

Can be deployed via GPO to all relevant hosts.

maxpi

ASKER

I probably have the skills to get up to speed with that...