Thank you i will give it a try. However i am also thinking of running SELinux in permissive mode for my proxy server. what do you say about it? regards, Bilal ---------------------------------------- > Date: Tue, 18 May 2010 15:00:05 +0200 > From: tiery.denys@xxxxxxxxx > To: gigoz@xxxxxxx > CC: squid-users@xxxxxxxxxxxxxxx > Subject: Re: SELINUX issue(confined>unconfined) > > okay, > > I have also worked on a similar project (squid/kerberos/selinux). > I installed squid in /usr/local/squid but I had to modify > /etc/selinux/targeted/contexts/files/file_contexts and adapt it to my > squid directory. > > /usr/local/squid/etc(/.*)? system_u:object_r:squid_conf_t:s0 > /usr/local/squid/var/logs(/.*)? system_u:object_r:squid_log_t:s0 > /usr/local/squid/share(/.*)? system_u:object_r:squid_conf_t:s0 > /usr/local/squid/var/cache(/.*)? system_u:object_r:squid_cache_t:s0 > /usr/local/squid/sbin/squid -- system_u:object_r:squid_exec_t:s0 > /usr/local/squid/var/logs/squid\.pid -- system_u:object_r:squid_var_run_t:s0 > /usr/local/squid/libexec(/.*)? system_u:object_r:lib_t:s0 > /usr/local/squid -d system_u:object_r:bin_t:s0 > /usr/local/squid/var -d system_u:object_r:var_t:s0 > > Then restore context (with restorecon or .autorelabel and reboot). > > But i am not sure modifing this file is the best way. > It you update your selinux policy, changement will not be persistent. > > I think it is better to build a selinux module for our squid. > > Tiery > > > > On Tue, May 18, 2010 at 2:34 PM, GIGO . wrote: >> >> Yes i am using a compiled version. I have used this command chcon -t unconfined_exec_t /usr/sbin/squid and its working now. Is this a security issue? >> >> regards, >> >> Bilal >> >> >> >> >> >> >> >> ---------------------------------------- >>> Date: Tue, 18 May 2010 14:26:06 +0200 >>> From: tiery.denys@xxxxxxxxx >>> To: squid-users@xxxxxxxxxxxxxxx >>> Subject: Re: SELINUX issue(confined>unconfined) >>> >>> Hi, >>> >>> ps -Z => squid_t and getenforce => enforcing >>> squid is started with selinux >>> >>> Redhat/centos platform: >>> If squid is installed with yum, squid will be started with a squid_t >>> selinux context. >>> >>> If you compile your squid and installed it, you will have to change >>> squid files contexts manually. >>> >>> As i see you have squid_kerb_plugin, you should have compile you squid >>> to support kerberos, no? >>> >>> --- >>> >>> For your problem: >>> >>> try to check selinux log: >>> audit2allow -al >>> or cat /var/log/audit/audit.log | audit2allow >>> >>> You can also try to restore selinux context for all squid files: >>> restorecon -R /etc/squid >>> restorecon -R /var/log/squid >>> >>> etc... >>> >>> or touch /.autorelabel and reboot >>> >>> >>> Tiery >>> >>> On Tue, May 18, 2010 at 9:47 AM, GIGO . wrote: >>>> >>>> Dear All, >>>> >>>> Your guidance is required. Please help. >>>> >>>> It looks that squid process run by default as a confined process whether its a compiled version or a version that come with the linux distro. It means that the squid software is SELINUX aware.Am i right? >>>> >>>> [root@squidLhr ~]# ps -eZ | grep squid >>>> system_u:system_r:squid_t 3173 ? 00:00:00 squid >>>> system_u:system_r:squid_t 3175 ? 00:00:00 squid >>>> system_u:system_r:squid_t 3177 ? 00:00:00 squid >>>> system_u:system_r:squid_t 3179 ? 00:00:00 squid >>>> system_u:system_r:squid_t 3222 ? 00:00:00 unlinkd >>>> system_u:system_r:squid_t 3223 ? 00:00:00 unlinkd >>>> >>>> >>>> it was successful before i changed the selinux to enforcing.Now i even cannot start squid process that access the parent at localhost(3128) manually even. The other process starts normally if i do manually. >>>> >>>> When running as an unconfined process by the following command the problem had resolved >>>> >>>> chcon -t unconfined_exec_t /usr/sbin/squid >>>> >>>> However it doesnot feel appropriate to me. Please guide me on this. >>>> >>>> >>>> >>>> I am starting squid with the following init script if it has something to do with the problem: >>>> >>>> #!/bin/sh >>>> # >>>> #my script >>>> case "$1" in >>>> start) >>>> /usr/sbin/squid -D -sYC -f /etc/squid/squidcache.conf >>>> /usr/sbin/squid -D -sYC -f /etc/squid/squid.conf >>>> #The below line is to automatically start apache with system startup >>>> /usr/sbin/httpd -k start >>>> #KRB5_KTNAME=/etc/squid/HTTP.keytab >>>> #export KRB5_KTNAME >>>> #KRB5RCACHETYPE=none >>>> #export KRB5RCACHETYPE >>>> ;; >>>> stop) >>>> >>>> /usr/sbin/squid -k shutdown -f /etc/squid3/squidcache.conf >>>> echo "Shutting down squid secondary process" >>>> /usr/sbin/squid -k shutdown -f /etc/squid3/squid.conf >>>> echo "Shutting down squid main process" >>>> # The below line is to automatically stop apache at system shutdown >>>> /usr/sbin/httpd -k stop >>>> ;; >>>> esac >>>> >>>> >>>> Thanking you & regards, >>>> >>>> Bilal >>>> >>>> >>>> ---------------------------------------- >>>>> From: gigoz@xxxxxxx >>>>> To: squid-users@xxxxxxxxxxxxxxx >>>>> Date: Tue, 18 May 2010 06:02:35 +0000 >>>>> Subject: SELINUX issue >>>>> >>>>> >>>>> Hi all, >>>>> >>>>> When i change SELINUX from permissive mode to Enforcing mode. My multiple instance setup fail to start. Please guide how to overcome this. >>>>> >>>>> -----------------------Excerpts from cache.log----------------- >>>>> >>>>> 2010/05/18 10:31:51| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:51| Store rebuilding is 7.91% complete >>>>> 2010/05/18 10:31:52| Done reading /var/spool/squid swaplog (51794 entries) >>>>> 2010/05/18 10:31:52| Finished rebuilding storage from disk. >>>>> 2010/05/18 10:31:52| 51794 Entries scanned >>>>> 2010/05/18 10:31:52| 0 Invalid entries. >>>>> 2010/05/18 10:31:52| 0 With invalid flags. >>>>> 2010/05/18 10:31:52| 51794 Objects loaded. >>>>> 2010/05/18 10:31:52| 0 Objects expired. >>>>> 2010/05/18 10:31:52| 0 Objects cancelled. >>>>> 2010/05/18 10:31:52| 0 Duplicate URLs purged. >>>>> 2010/05/18 10:31:52| 0 Swapfile clashes avoided. >>>>> 2010/05/18 10:31:52| Took 1.13 seconds (45641.00 objects/sec). >>>>> 2010/05/18 10:31:52| Beginning Validation Procedure >>>>> 2010/05/18 10:31:52| Completed Validation Procedure >>>>> 2010/05/18 10:31:52| Validated 103614 Entries >>>>> 2010/05/18 10:31:52| store_swap_size = 913364 >>>>> 2010/05/18 10:31:52| storeLateRelease: released 0 objects >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| Detected DEAD Parent: 127.0.0.1 >>>>> 2010/05/18 10:31:52| TCP connection to 127.0.0.1/3128 failed >>>>> 2010/05/18 10:31:52| Failed to select source for 'http://1.channel19.facebook.com/p' >>>>> 2010/05/18 10:31:52| always_direct = 0 >>>>> 2010/05/18 10:31:52| never_direct = 1 >>>>> 2010/05/18 10:31:52| timedout = 0 >>>>> 2010/05/18 10:31:57| Failed to select source for 'http://0.channel19.facebook.cm >>>>> >>>>> -------------------------------------------------------------------------------------------- >>>>> >>>>> >>>>> regards, >>>>> >>>>> Bilal >>>>> _________________________________________________________________ >>>>> Hotmail: Trusted email with powerful SPAM protection. >>>>> https://signup.live.com/signup.aspx?id=60969 >>>> _________________________________________________________________ >>>> Hotmail: Powerful Free email with security by Microsoft. >>>> https://signup.live.com/signup.aspx?id=60969 >> _________________________________________________________________ >> Hotmail: Powerful Free email with security by Microsoft. >> https://signup.live.com/signup.aspx?id=60969 _________________________________________________________________ Your E-mail and More On-the-Go. 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