Networking, system administration and more
Networking, system administration and more
To configure CentOS 7 to use Active Directory as an authentication source sssd will be used. The sssd setup is greatly simplified using realmd, only basic manual configuration has to be added. Install Packages Install the required packages with yum: Join to Domain Join the host to the domain with […]
Read moreThese are some common commands for iproute2. VLAN’s Add VLAN 100 interface on eth0: ip link add link eth0 name eth0.100 type vlan id 100 Delete VLAN 100 interface on eth0: ip link delete eth0.100 Bring up the VLAN 100 interface: ip link set dev eth0.100 up Bring down the […]
Read moreThese are some common commands I use. In the examples, C-a means push the Control + A buttons at the same time. Send command to all windows Enter command line mode with C-a then :. This will send ls -l to all windows: Automatic window naming When I connect to […]
Read moreMy default Debian install had an issue with the headphones not working. To resolve it I needed to install the pulse audio bluetooth module and restart the service:
Read moreMy Juniper SRX devices are configured to send packet captures to a Linux server for further analysis. I have the Linux server exporting its share via NFS which I mount on my PC, that allows me to then browse through the packet captures of attacks using my PC directly and […]
Read moreThe following settings should be used on Linux devices with a SSD. The instructions are Debian specific and taken from the SSDOptimization page on the Debian wiki. Automatic Trim/Mount Options Make sure the file system(s) are mounted with these options: discard,noatime,defaults As an example: Scheduler Set the scheduler for the […]
Read moreI hate getting this prompt: root@home:~# ssh server.somehost.com The authenticity of host ‘server.somehost.com (123.123.123.123)’ can’t be established. RSA key fingerprint is e6:fa:89:4d:c4:03:8e:09:1b:e5:b1:3c:ec:5f:8e:a3. Are you sure you want to continue connecting (yes/no)? If you see it often enough you probably ignore it – it then loses its purpose if you find […]
Read moreIf you are running VMware ESX/vSphere with a Linux VM that is running out of disk space it is usually a trivial task. Assuming you have a simple partition layout like this: /dev/sda1 – 128M – /boot /dev/sda2 – 2G – swap /dev/sda3 – 25G – / If you want […]
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