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Limit Downloading + X_forwarded_for option in squid

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Old 08-06-2010
Limit Downloading + X_forwarded_for option in squid
Dear All

I m using squid 2.7 Stable 9 and Dansguardian 2.10.1.1, i have compiled both squid and dansguardian, i want use follow_x_forwarded_for in squid make clients IPs visible to squid, but this option is not working correctly, i have also set x_forwarded_for=on in dansguardian and my squid configurations for x_forwarded_for are as under
acl my_other_proxy srcdomain 172.29.13.211
follow_x_forwarded_for allow localhost
follow_x_forwarded_for allow my_other_proxy

the IP 172.29.13.211 is the ip which i set in dansguardian configuration file as proxy ip

Please also help if there is any option in dansguardian to put a limit on downloadable files suppose each user can download upto 10 MB if the file is bigger than 10 MB it will be denied.
also help me if there is any other technique in RedHat Linux to control bandwidth etc.

Thanks in advance
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LEARN ABOUT REDHAT

squid_unix_group

squid_unix_group(8)					      System Manager's Manual					       squid_unix_group(8)

NAME

       squid_unix_group - Squid UNIX Group external_acl helper

SYNOPSIS

       squid_unix_group [-g groupname] [-g groupname...] [-p]

DESCRIPTION

       This helper allows Squid to base access controls on users memberships in UNIX groups.

       -g groupname
	      Specifies a group name to match.

       -p     Also match the users primary group from /etc/passwd

EXAMPLES

       This squid.conf example defines two Squid acls. usergroup1 matches users in group1, and usergroup2 matches users in group2 or group3

	      external_acl_type unix_group %LOGIN /usr/local/squid/libexec/squid_unix_group -p

	      acl usergroup1 external unix_group group1

	      acl usergroup2 external unix_group group2 group3

NOTES

       By  default  up to 11 groups can be matched in one acl (including commandline specified groups). This limit is defined by MAX_GROUPS in the
       source code.

AUTHOR

       This manual page was written by Henrik Nordstrom <hno@squid-cache.org>

       squid_unix_group is written by Rodrigo Campos <rodrigo@geekbunker.org>

KNOWN ISSUES

       Does not understand gid aliased groups sometimes used to work around groups size limitations. If you are using gid aliased groups then  you
       must specify each alias by name.

QUESTIONS

       Any questions on usage can be sent to Squid Users <squid-users@squid-cache.org>

REPORTING BUGS

       Report bugs or bug-fixes to Rodrigo Campos <rodrigo@geekbunker.org> or Squid Developers <squid-dev@squid-cache.org>

SEE ALSO

       group(5),passwd(5)

Squid UNIX Group helper 					  12 August 2002					       squid_unix_group(8)