Networking, system administration and more
Networking, system administration and more
The PowerShell cmdlet Get-ADComputer can be used to retrieve the details for a computer account. You can use a filter if required. The usage of this cmdlet is like this: If no filter property is provided you will be prompted for the filter when running this cmdlet. Examples Some examples […]
Read moreTo test a users credentials you can start a process using Start-Process with the -Credential flag. As an example, to start cmd.exe and prompt for the username and password:
Read moreThe Juniper vMX router for KVM includes a shell script to install and manage the vMX virtual machines. Here are the common commands you can use with the vmx.sh script: To do the initial installation of the vMX (this only needs to be done once, if you run it again […]
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 moreThese are some common OpenSSL commands. Generating Keys/Certs Generate new CSR and private key: openssl req -out csr.csr -new -sha256 -newkey rsa:4096 -nodes -keyout key.key Generate CSR for an existing key: openssl req -out csr.csr -key key.key -new -sha256 Generate self signed cert and key: openssl req -x509 -sha256 -nodes […]
Read moreSometimes you need to execute commands on the secondary node. To do this you can open a session to the remote node from the primary using the command request routing-engine login node X where X is the node ID to login to. As an example: Transferring Files Files can also […]
Read moreThe following commands will show you the current TCAM usage on a QFX series switch. Especially for QFX5100 devices, the TCAM is very small and only a limited number of firewall filters can be installed. If the TCAM is full you will have issues such as the loopback firewall filter […]
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 […]
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