similar to: SELinux and Perl script using sendmail

Hi All, I'm running CentOS 5.2 with SELinux in enforcing mode (default targeted policy). The server hosts a PHP web app that sends mail. I'm getting the following errors (see end of message) in my selinux audit.log file every time the app sends an email. The email always seems to get sent successfully, despite the log messages. However, they do concern me and I would like to understand

Having been accomodating about it in the past, the technical geniuses at Comcast have permanently blocked port 25, separating me (at my home office) from my employer's e-mail server. What can be done on the server side to keep Postfix listening on 25 _and_ accept my connections on some other port? Is there a Postfix solution? iptables maybe? Miark

My wife's office server was compromised today. It appears they ssh'ed in through account pcguest which was set up for Samba. (I don't remember setting up that account, but maybe I did.) At any rate, I found a bazillion "ftp_scanner" processes running. A killall finished them off quickly, I nuked the pcguest account, and switched ssh to a different port (which I normally do

What's the best package for a plain-jane pop3 server? Miark

What are your opinions on pcre vs regexp for header_, body_, and mime_checks in Postfix? I looked at the regexp_table and prce_table man pages, and see almost no difference other than the available flags. Miark

Hello, After a yum update last night, I had a CenOS 5.4 i386 system pull in the following selinux updates: Jan 07 21:39:14 Updated: selinux-policy-2.4.6-255.el5_4.3.noarch Jan 07 21:39:31 Updated: selinux-policy-targeted-2.4.6-255.el5_4.3.noarch This machine has SELinux set to Enforcing. This morning, I see I got the following email from Cron: /etc/cron.daily/0logwatch: sendmail: warning:

On 12/04/2014 03:22 PM, James B. Byrne wrote: > On Thu, December 4, 2014 12:29, James B. Byrne wrote: >> Re: SELinux. Do I just build a local policy or is there some boolean setting >> needed to handle this? I could not find one if there is but. . . >> > Anyone see any problem with generating a custom policy consisting of the > following? > > grep avc

I have the firewall turned on my CentOS 5 box, but GRC is reporting that 631 is closed instead of stealthed. If the firewall isn't configured to allow that, then why might that be happening? Miark

Not a problem ... sharing a solution (this time)! Please correct my understanding of the process, if required. "i_stream_read() failed: Permission denied" is an error message generated when a large-ish file (>128kb in my case) is attached to a message that has been passed to Dovecot's deliver program when SELinux is being enforced. In my case, these messages are first run

Is CentOS pronounced as a word, or as cent-oh-es? Miark

I've seen several references to running VMWare under CentOS, but does anybody know how well Parallels runs under CentOS? On a related note, now that Zen is as mature as it is, are commercial VMs really much better than Zen? Miark

Hi list, I've knocked up a contribution on SELinux here: http://wiki.centos.org/HowTos/SELinux I've tried to pitch it as an introduction for those not already familiar with SELinux but also hopefully a useful reference. I'm relatively new to SELinux and have covered pretty much everything I know to the limits of my limited knowledge. If folks think other material needs to be

Hey guys, I've been getting some strange selinux messages after the 5.3 upgrade. It appears as though my mail system (postfix) is constantly trying to access the rpm database? Here's the audit messages (I tend to look at my selinux messages using audit2allow < /var/log/audit.log as I find it easier to read quickly): allow postfix_postdrop_t rpm_t:tcp_socket { read write }; allow

I am seeing these avc messages on a newly commissioned and up-to-date CentOs-6 virtual guest: ---- time->Thu Dec 4 12:14:58 2014 type=SYSCALL msg=audit(1417713298.610:60522): arch=c000003e syscall=2 success=no exit=-13 a0=7fd70e6de1e6 a1=0 a2=1b6 a3=0 items=0 ppid=2698 pid=4294 auid=0 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=2784 comm="trivial-rewrite"

Hi: I have been using Dovecot for well over a year now and it has always worked with few problems. The mail setup is not simple... Postfix+MailScanner+ClamAV+Docvecot+MySql+postfix.admin... just to mention the major things. The system is CentOS 5.3 on VMware. The maildir is on an NFS share, index and control is local. About a month ago I thought I upgraded from 1.1.x to 1.2.x. by doing an

On 09/09/2018 07:19 AM, Daniel Walsh wrote: > sesearch -A -s httpd_t -t system_conf_t -p read > > If you feel that these files should not be part of the base_ro_files > then we should open that for discussion. I think the question was how users would know that the policy allowed access, as he was printing rules affecting httpd_t's file read access, and looking for

Hi, Some time ago I wrote an introductory article about SELinux on my blog. I'm currently updating it for my new blog, and I found a curious change in SELinux policy. Here goes. For demonstration purposes, I'm using some static webpages, more exactly the default pages found in /usr/share/httpd/noindex, which I simply copied over to /var/www/html. As a first practical example, I'm

Am 09.09.2018 um 14:49 schrieb Daniel Walsh <dwalsh at redhat.com>: > > On 09/08/2018 09:50 PM, Leon Fauster via CentOS wrote: >> Any SElinux expert here - briefly: >> >> # getenforce >> Enforcing >> >> # sesearch -ACR -s httpd_t -c file -p read |grep system_conf_t >> <no output> >> >> # sesearch -ACR -s httpd_t -c file

Apache DocumentRoot on an NFS directory: [root at localhost ~]# service httpd start Starting httpd: Warning: DocumentRoot [/home/www/html] does not exist Syntax error on line 292 of /etc/httpd/conf/httpd.conf: DocumentRoot must be a directory [FAILED] [root at localhost ~]# After some research, I found this (dated) link

I want you all to see what I went through trying to simply reassign (unsuccessfully) the context of a well-known port. To the best of my ability to recall none of the packages mentioned below are even installed on the host in question. Why are these dependices preventing me from removing a disused SELinux policy. I have done exactly that, reassign port contexts, in the past without encountering