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RE: Capturing HTTPS traffic

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Sorry. SSLDUMP is like tcpdump but for ssl, it Works on layer 3 and has nothing to do with squid, that what we use.

Regards.



-----Mensaje original-----
De: PS [mailto:packetstack@xxxxxxxxx] 
Enviado el: viernes, 03 de febrero de 2012 12:56 p.m.
Para: Alfonso Alejandro Reyes Jimenez
CC: squid-users@xxxxxxxxxxxxxxx
Asunto: Re:  Capturing HTTPS traffic

Could you please be a little more specific? Is there something else called ssldump that I am supposed to use?

This is what my config looks like. I am currently using ssl_bump.


acl localnet src 10.0.0.0/8	# RFC1918 possible internal network
acl localnet src 172.16.0.0/12	# RFC1918 possible internal network
acl localnet src 192.168.0.0/16	# RFC1918 possible internal network
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines
acl SSL_ports port 443
acl Safe_ports port 80		# http
acl Safe_ports port 21		# ftp
acl Safe_ports port 443		# https
acl Safe_ports port 70		# gopher
acl Safe_ports port 210		# wais
acl Safe_ports port 1025-65535	# unregistered ports
acl Safe_ports port 280		# http-mgmt
acl Safe_ports port 488		# gss-http
acl Safe_ports port 591		# filemaker
acl Safe_ports port 777		# multiling http
acl CONNECT method CONNECT
http_access allow localhost manager
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localnet
http_access allow localhost
http_access deny all
http_port 3128 ssl-bump generate-host-certificates=on dynamic_cert_mem_cache_size=4MB  cert=/usr/local/squid/ssl_cert/squid.pem
always_direct allow all
ssl_bump allow all
sslproxy_cert_error allow all
sslproxy_flags DONT_VERIFY_PEER
coredump_dir /usr/local/squid/var/cache/squid
refresh_pattern ^ftp:		1440	20%	10080
refresh_pattern ^gopher:	1440	0%	1440
refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
refresh_pattern .		0	20%	4320
logformat squid %ts.%03tu %6tr %>a %Ss/%03>Hs %<st %rm %ru %un %Sh/%<A %mt access_log /usr/local/squid/var/logs/access.log squid

Thanks for the quick response!

On Feb 3, 2012, at 1:20 PM, Alfonso Alejandro Reyes Jimenez wrote:

> Hi.
> 
> If you have the certifícate information you may use ssldump to decode the information. I hope this helps.
> 
> 
> Regards.
> 
> -----Mensaje original-----
> De: PS [mailto:packetstack@xxxxxxxxx] Enviado el: viernes, 03 de 
> febrero de 2012 12:11 p.m.
> Para: squid-users@xxxxxxxxxxxxxxx
> Asunto:  Capturing HTTPS traffic
> 
> Hello,
> 
> I am currently running the following version of Squid:
> 
> Squid Cache: Version 3.2.0.14-20120202-r11500 configure options:  '--enable-ssl' '--enable-ssl-crtd'
> 
> I configured it so that certs are generated on the fly and I am able to get to HTTPS websites without getting a certificate warning.
> 
> I want to do a packet capture of all HTTPS traffic while in cleartext. I would think that it can be done on the Squid box. Is that possible?
> 
> If I use tcpdump on the Squid box, I only see the encrypted traffic. Do I have to recompile Squid with another configuration option to be able to do what I want to do?
> 
> Thanks




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