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Two questions regarding ssl_bump and peek/splice.

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Can anyone point me to a deep dive or something like that about how ssl_bump and peek/splice etc work? The more technical the better.   I don’t want to ask a ton of questions about some of the errors I’m getting without fully understanding what is going on.  

 

I currently have squid working almost the way I want it, with just a few remaining issues.  One of them being is that with ssl sites I seem to get a lot of “not private, cert authority” messages then I have to add that site to an acl to not be bumped.    Regarding my first question, I want to understand why.

 

My second question I think is a quickie.  Can you run 2 log files?  Reason being is that I use squidanalyzer and it only reads the standard log format.  But there are better log formats for what I’m doing. I’d like to keep dual logs while I work on my own analyzer that reads that log file.   You can see the logformat line commented out along with some other log  lines.

 

Thanks much

 

Here is my current working config.

 

#Access Lists

acl internal src 192.168.200.0/21

acl wireless src 192.168.100.0/23

 

#Ports allowed through Squid

acl Safe_ports port 80

acl Safe_ports port 443

acl SSL_ports port 443

acl CONNECT method CONNECT

 

#acls from blacklist

acl allowed dstdomain -i "/etc/squid3/acls/http_allowed.acl"

acl prime dstdomain -i "/etc/squid3/acls/squid-prime.acl"

acl china dst -n "/etc/squid3/acls/ccd-china.acl"

acl india dst -n "/etc/squid3/acls/ccd-india.acl"

acl iran dst -n "/etc/squid3/acls/ccd-iran.acl"

acl nigeria dst -n "/etc/squid3/acls/ccd-nigeria.acl"

acl pakistan dst -n "/etc/squid3/acls/ccd-nigeria.acl"

acl romania dst -n "/etc/squid3/acls/ccd-romania.acl"

acl russia dst -n "/etc/squid3/acls/ccd-russia.acl"

acl syria dst -n "/etc/squid3/acls/ccd-syria.acl"

acl ukraine dst -n "/etc/squid3/acls/ccd-ukraine.acl"

acl uzbekistan dst -n "/etc/squid3/acls/ccd-uzbekistan.acl"

acl ips dst -n "/etc/squid3/acls/broken_ips.acl"

 

#allow/deny

http_access allow allowed

http_access allow ips

http_access deny prime

http_access deny china

http_access deny india

http_access deny iran

http_access deny nigeria

http_access deny pakistan

http_access deny romania

http_access deny russia

http_access deny syria

http_access deny ukraine

http_access deny uzbekistan

 

http_access allow internal

http_access allow wireless

http_access deny !Safe_ports

http_access deny CONNECT !SSL_ports

http_access deny all

 

#Bumping

acl step1 at_step SslBump1

acl step2 at_step SslBump2

acl step3 at_step SslBump3

 

acl broken_sites ssl::server_name_regex "/etc/squid3/acls/http_broken.txt"

 

#ssl_bump peek all

ssl_bump peek !broken_sites

ssl_bump splice all

#ssl_bump splice !broken_sites

 

sslproxy_capath /etc/ssl/certs

 

sslcrtd_program /lib/squid3/ssl_crtd -s /etc/squid3/ssl_db -M 4MB

sslcrtd_children 32 startup=5 idle=1

 

 

#logformat mine %>a %[ui %[un [%tl] "%rm %ru HTTP/%rv" %ssl::>sni %ssl::>cert_subject %>Hs %<st %Ss:%Sh

 

#access_log syslog:daemon.info mine

#access_log daemon:/var/log/squid3/test.log mine

 

#intercept

http_port 3128 intercept

https_port 3129 intercept ssl-bump cert=/etc/squid3/certs/squid.pem cafile=/etc/squid3/certs/squid.pem key=/etc/squid3/certs/squid.pem  generate-host-certificates=on dynamic_cert_mem_cache_size=4MB sslflags=NO_SESSION_REUSE

 

#nameservers

dns_nameservers 192.168.201.1 8.8.8.8

 

#WCCPv2 items

wccp_version 2

wccp2_router 192.168.200.73

wccp2_forwarding_method gre

wccp2_return_method gre

wccp2_service standard 0 password=LNP1

wccp2_service dynamic 70 password=LNP1

wccp2_service_info 70 protocol=tcp flags=dst_ip_hash priority=240 ports=443

 

Bruce Markey | Network Security Analyst

STEINMAN COMMUNICATIONS

717.291.8758 (o) bmarkey@xxxxxxxxxxxxxxxxxxxxxxxxxx

8 West King St | PO Box 1328, Lancaster, PA 17608-1328

 

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