Packages needed for Centos 7 to connect via PPTP
yum -y install NetworkManager-l2tp-gnome ppp pptp pptp-setup
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Check/Change Windows Domain Password Policy
Start the Group Policy Management application Drill down the tree Forest: (your domain) Domains (your domains) Right click on “Default Domain Policy” and select “edit” In the Group Policy Management Editor (that hopefully just opened) drill down to Computer Configuration … Continue reading →
Create your own RHSBL
I was having problems with receiving emails from multiple ip addresses – but all of them being addressed from the same set of email addresses. In Zimbra this can be addressed using zimbraMtaSmtpdSenderRestrictions and setting up a file with a … Continue reading →
Gnome 3 icons are huge!
I updated my desktop machine to Centos 7.4 and my desktop icons were suddenly huge! After a bit of plugging around I found the fix Find the application “dconf Editor” under Applications – System Tools * Drill down to org … Continue reading →
Battery and power status on your CentOS Linux laptop
The upower cli tool will get you a large amount of information about power and batteries in your system. Install upower using the command yum -y install upower To enumerate the devices upower can get information about on your system … Continue reading →
Access the Centos 7 Virtual Machine Manager Console Without Using the Root Password
Create a file named /etc/polkit-1/localauthority/50-local.d/50-org.libvirt-group-access.pkla and put the following lines in it [libvirt group Management Access] Identity=unix-group:libvirt Action=org.libvirt.unix.manage ResultAny=yes ResultInactive=yes ResultActive=yes Create a group name libvirt (if it does not already exist) groupadd libvirt Put each user who needs access … Continue reading →
Forcing / Testing Cisco ASA Failover
The following is for working with the Cisco ASA with failover – where you have two ASA’s set up so that one will take over when one fails. This is not used for ISP failover. For that, see here. Force … Continue reading →
Some Simple FirewallD Examples
Using Firewall-cmd to check firewall current state If you want to verify the current state of firewall then you need to use –state option with firewall-cmd command to check that. As you can see from below output, firewalld is currently … Continue reading →
Installing Centos 7 on an Intel NUC
Intel has come out with a really nice small form factor computer call the NUC. It has 2 USB 2.0 ports and 4 USB 3.0 ports. It is 5.4 x 4.9 x 3.5 inches in size. Bluetooth, wifi and Gigibit … Continue reading →
Let’s Encrypt Free SSL Certs for your web site
Let’s Encrypt is a fantastic project put together by the non-profit Internet Security Research Group (ISRG). It is a flexible tool for setting up SSL certificates for your web sites. Installation To install on Rocky Linux 8 execute: yum -y install … Continue reading →