Re: [squid-users] Tproxy

> I think you cannot have both the following lines:

No Hassan. For tproxy to work reliably you MUST have both of the following
lines and be using Squid 2.6 or later.

>
> http_port 3128
> http_port 8080 tproxy

> Which version of Squid are you using?

> Just as a test, can you browse from your clients if you set manual proxy
> settings?

>
> Regards
> HASSAN
>
>
>
> ----- Original Message -----
> From: "vivian t" <vivijant_at_gmail.com>
> To: <squid-users_at_squid-cache.org>
> Sent: Sunday, March 01, 2009 17:42
> Subject: [squid-users] Tproxy
>
>
> hello
>
> [root_at_squid ~]# dmesg |grep TPROXY
> NF_TPROXY: Transparent proxy support initialized, version 4.1.0
> NF_TPROXY: Copyright (c) 2006-2007 BalaBit IT Ltd.
>
> kernel is 2.6.28
> CONFIG_NETFILTER_TPROXY=m
> CONFIG_NETFILTER_XT_TARGET_TPROXY=m
> CONFIG_NETFILTER_XT_MATCH_SOCKET=m
>
> my squid.conf is
>
> cache_dir aufs /var/spool/squid 20000 130 256
> cache_mem 128 MB
> maximum_object_size 5 MB
> maximum_object_size_in_memory 32 kb
> cache_swap_low 98%
> cache_swap_high 99%
> cache_replacement_policy heap LFUDA
> memory_replacement_policy heap GDSF
> high_memory_warning 1500 MB
> ipcache_high 99
> ipcache_low 98
> ipcache_size 4096
> cache_store_log none
> logfile_rotate 7
> hierarchy_stoplist cgi-bin ?
> acl QUERY urlpath_regex cgi-bin \?
> no_cache deny QUERY
>
> auth_param basic children 5
> auth_param basic realm Squid proxy-caching web server
> auth_param basic credentialsttl 2 hours
> auth_param basic casesensitive off
>
> refresh_pattern ^ftp: 1440 20% 10080
> refresh_pattern ^gopher: 1440 0% 1440
> refresh_pattern . 0 20% 4320
>
> acl manager proto cache_object
> acl localhost src 127.0.0.1/32
> acl to_localhost dst 127.0.0.0/8
> 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
> 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
> acl 1 src "/usr/local/squid/etc/net"

What is the exact content of this file? /usr/local/squid/etc/net

>
> http_access allow 1
> http_access allow localhost

None of these below will have effect. They are all covered by "deny all"
later.
Okay to skip that now, its not the problem, but remember for later.

> http_access deny manager
> http_access deny !Safe_ports
>
> http_access deny CONNECT !SSL_ports

> http_access deny all
> http_reply_access allow all
> icp_access allow all
>
> http_port 3128
> http_port 8080 tproxy

Good.

> coredump_dir /var/spool/squid
> access_log /usr/local/squid/var/logs/access.log squid
> cache_log /usr/local/squid/var/logs/cache.log
> cache_effective_user squid
> cache_effective_group squid
> visible_hostname squid
>
> half_closed_clients off
> memory_pools off
> shutdown_lifetime 10 seconds
> store_dir_select_algorithm round-robin
>
> [root_at_squid ~]# service iptables status
> Table: mangle
> Chain PREROUTING (policy ACCEPT)
> num target prot opt source destination
> 1 DIVERT tcp -- 0.0.0.0/0 0.0.0.0/0 socket
> 2 TPROXY tcp -- 0.0.0.0/0 0.0.0.0/0 tcp
> dpt:80 TPROXY redirect 0.0.0.0:8080 mark 0x1/0x1
>
> Chain INPUT (policy ACCEPT)
> num target prot opt source destination
>
> Chain FORWARD (policy ACCEPT)
> num target prot opt source destination
>
> Chain OUTPUT (policy ACCEPT)
> num target prot opt source destination
>
> Chain POSTROUTING (policy ACCEPT)
> num target prot opt source destination
>
> Chain DIVERT (1 references)
> num target prot opt source destination
> 1 MARK all -- 0.0.0.0/0 0.0.0.0/0 MARK set
> 0x1
> 2 ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
>
> the squid server is running i can browse site from it
> but the users couldn't surf any thing
> e.g:
> when try to open www.google.com
> he got (110) connection timed out
> in my access.log
> 1235902268.931 180883 172.25.10.110 TCP_MISS/504 3929 GET
> http://www.google.com/ - DIRECT/64.233.183.99 text/html

Shows the traffic arriving at squid and being denied. What denial message
is being seen?

>
>
> note: idon't use bridge or wccp
>
> what the wrong ?
>

Amos
Received on Sun Mar 01 2009 - 22:42:42 MST