[squid-users] Squid 2.6 21 as reverse-proxy and caching-proxy the same time

Dear Squid Gurus!

I am running squid 2.6 on an IPCOP firewall as caching proxy for my internal
network.
I got 2 more servers now running an HTTPS service. Our webhoster forwards
traffic by URL-HIDING to our dynDNS.

a) internal clients being able to browse the web via squid
b) HTTP website on server APP-001 available at port 80 and URL xxx.mine.nu,
cached to the outside
c) HTTPS website on server NAS-003 available at port 443 and URL
xxx.mine.nu, cached to the outside
d) HTTPS website on server APP-004 available at port 443 and URL
xxx.mine.nu/extranet/, cached to the outside

In the end it should work like this:

Web proxy:
internet <---- squid transparent:800 <---- internal clients browsing the web

Reverse proxy:

internet (xxx.mine.nu) ----> squid accel:80 ---->
APP-001:80
internet (xxx.mine.nu) ----> squid accel:443 ---->
NAS-003:443
internet (xxx.mine.nu/extranet/) ----> squid accel:443 ---->
APP-004:443 (or :80)

Based on my squid.conf I am able now to grab the standard webpage
(APP-001:80), the /extranet/ page for APP-004 at port 80 and 443 (which
should be only 443) but the webpage at 443 is not opening. Furthermore every
traffic from internal network is ending now on the webserver at APP-001:80.

Here is my squid.conf:

[CODE]
shutdown_lifetime 1 seconds
icp_port 0

# Reverse Proxy for HTTP

http_port 80 accel defaultsite=www.REALDNS.net
# Forward ORIGIN IP to server - to be checked
#forwarded_for on
cache_peer 192.168.103.25 parent 80 0 no-query originserver name=app-001
acl ndjsite dstdomain www.REAL.net
cache_peer_access app-001 allow ndjsite

# Deny - check later
#cache_peer_access app-001 deny all

# w/ cert for HTTPS

https_port 443 accel cert=/var/ipcop/proxy/server.crt
key=/var/ipcop/proxy/server.key defaultsite=xxx.mine.nu vhost protocol=https

# Forward ORIGIN IP to server - to be checked
#forwarded_for on

# and multi host

acl ndjext urlpath_regex ^/extranet

cache_peer 192.168.103.20 parent 443 0 no-query originserver ssl
name=nas-003 login=PASS
cache_peer_access nas-003 deny ndjext

cache_peer 192.168.103.26 parent 443 0 no-query originserver ssl
name=app-004 login=PASS
cache_peer_access app-004 allow ndjext
cache_peer_access app-004 deny ndjsite

http_port 192.168.103.1:800 transparent
http_port 192.168.105.1:800 transparent

acl QUERY urlpath_regex cgi-bin \?
no_cache deny QUERY

cache_effective_user squid
cache_effective_group squid

pid_filename /var/run/squid.pid

cache_access_log /var/log/squid/access.log
cache_log /var/log/squid/cache.log
cache_store_log none

log_mime_hdrs off
forwarded_for off

# Do not modify '/var/ipcop/proxy/squid.conf' directly since any changes
# you make will be overwritten whenever you resave proxy settings using the
# web interface! Instead, modify the file '/var/ipcop/proxy/acl' and then
# restart squid using the web interface. Changes made to the 'acl' file
# will propagate to the 'squid.conf' file at that time.
# [Scott Tregear, 22 Feb 2005]

# Uncomment the following line to enable logging of User-Agent header:
#useragent_log /var/log/squid/user_agent.log

# Uncomment the following line to enable logging of Referer header:
#referer_log /var/log/squid/referer.log

acl all src 0.0.0.0/0.0.0.0
acl localhost src 127.0.0.1/255.255.255.255
acl SSL_ports port 443 563
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 563 # https, snews
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 Safe_ports port 800 # Squid port (for icons)

acl IPCop_http port 81
acl IPCop_https port 445
acl IPCop_ips dst 192.168.103.1 192.168.105.1
acl IPCop_networks src 192.168.103.0/255.255.255.0
192.168.105.0/255.255.255.0
acl no_proxy_dst dst 0/32
acl CONNECT method CONNECT

##Access to squid:
#local machine, no restriction
http_access allow localhost

#GUI admin if local machine connects
http_access allow IPCop_ips IPCop_networks IPCop_http
http_access allow CONNECT IPCop_ips IPCop_networks IPCop_https

#Deny not web services
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports

#Finally allow IPCop_networks clients
http_access allow IPCop_networks !no_proxy_dst
http_access deny all

maximum_object_size 64768 KB
minimum_object_size 4 KB

cache_mem 10240 KB
cache_dir aufs /var/log/cache 256 16 256

request_body_max_size 0 KB
reply_body_max_size 0 allow all

visible_hostname loki.xxxxxxx.local

[/CODE]

My config base was the squid manpages, squidcache.org's config examples and
these page:
http://www.sweetnam.eu/index.php/Reverse_Proxy_with_Squid and
http://www.techienuggets.com/Comments?tx=94569

Perhaps you can point me to some examples were a setup like mine is running
or where I can look for a solution. Google, wiki.squid-cache.org and these
pages are my friends already:

http://blog.spench.net/2010/02/24/tips-for-setting-up-squid-in-reverse-proxy
-web-accelerator-accel-mode/
http://www.linux-club.de/viewtopic.php?t=24381
etc.

Thanx for your help!

Alex
Received on Thu Dec 23 2010 - 12:47:18 MST