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 →
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 … Continue reading →
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 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 →
Cacti is a great tool and it permits you to set up for HTTP authentication (Web Basic Authentication). However, I have had a couple of configuration issues when setting up HTTP authentication and have needed to put Cacti back to … Continue reading →
Fix your logon prompt for when you are on the console of your Linux server (Centos 6 runlevel 3 or Centos 7 multi-user.target) so that it displays your current ip address Edit /etc/rc.d/rc.local and add the following lines to the end … Continue reading →
First – install telnet on Centos 7 yum -y install telnet-server Edit the file /usr/lib/systemd/system/telnet.socket The section [Socket] has by default [Socket] ListenStream=23 Change 23 to the desired port number. Then systemctl enable telnet.socket systemctl start telnet.socket Firewalld for Telnet … Continue reading →
I want my numlock to be turned on when I turn on my laptop but my laptop has no option to turn on the numlock in the bios. I installed numlockx from here and installed it with the command yum install … Continue reading →
A quick synopsis on setting up a Cisco ASA and a Centos 6 or 7 system to use SNMP v3 to be monitored by Cacti Cisco ASA en conf t # create a snmp-server group (needed for SNMP v3) # … Continue reading →
I discovered that mod_auth_mysql has been replaced with mod_auth_dbd on Centos 7 and Apache 2.4. The following is a quick reference to setting mod_auth_dbd up <VirtualHost 10.10.10.10:80> # tell DBD you are using mysql DBDriver mysql # how to access … Continue reading →