Tag Archives: CentOS

Capturing IP tables logs

Posted on August 8, 2019 by hedscratchers

Overview CentOS7’RHEL7 – I needed to log dropped packets form IPtables to a separate file using rsyslog, I like my logs in separate files, and then rotate them. I read several online guides and most worked but ended up with … Continue reading →

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Migrate and upgrade Tenable Security Center from RHEL6/CentOS6 to RHEL7/CentOS7

Posted on January 23, 2019 by hedscratchers

Overview I had Tenable Security Center running on a RHEL6 VM which scans around 1000 hosts several times a week. REHL6 is getting a bit long-in-the-tooth and also there was a need to upgrade to the latest and greatest version of … Continue reading →

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How to prevent audit logs appearing in /var/log/messages – RHEL7

Posted on December 15, 2017 by hedscratchers

Overview For RHEL7. This took more work than I anticipated. My goal was this: Write audit logs to /var/log/audit Forward audit and syslog to central logging server Audit logs to NOT appear in /var/log/messages The items 1 and 2 were … Continue reading →

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Adding a custom unit file RHEL7, for swatch

Posted on October 11, 2017 by hedscratchers

swatch is a Linux tool for watching (it uses ”tail -f”) log files and then demonizes it. I had a need to know when a host needed rebooting after yum-cron had updated the kernel, rather than logging into each host … Continue reading →

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CentOS6.4 – X11 Forwarding session using SSH fails

Posted on September 27, 2013 by hedscratchers

From time to time I use X11 forwarding to connect to various web management interfaces on remote servers, I had just done a new install of CenOS6.4 64-bit minimal to try out Backuppc, went to run the webGUI by doing … Continue reading →

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Rolling back Samba to an older version on RHEL

Posted on September 25, 2013 by hedscratchers

I recently had the need to downgrade the version of samba that comes with RHEL6.4 64-bit, I had authentication issues within our domain environment with the newer versions, older versions of samba seem to work fine, so I needed to … Continue reading →

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Centos6.4 64-bit – No networking after clean install

Posted on August 5, 2013 by hedscratchers

I was recently running up a new CentOS6.4 64-bit minimal install on VMware vCenter v5  & vSphere client v5, and during the install of CentOS you can configure the networking manually, which I usually do for servers.  This VM server … Continue reading →

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pam_tally & pam_tally2

Posted on March 26, 2013 by hedscratchers

There a few minor differences between pam_tally & pam_tally2, just enough to trip you over and end up in another head scratching moment! pam_tally,  seems to have fallen out of favour for RHL6 & >= CentOS 6, they  seemed to … Continue reading →

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