This post is about How to Configure SSH Key on SecureCRT, then connect using generated SSH key Generate the SSH Key pair From the SecureCRT menu, select “Tools” and then “Create Public Key” In the “Create Public Key” dialog box, choose the type of key you want to create. You can choose between RSA and …
This post is about using Yubikey with OpenPGP for SSH Key Authentication. The previous post has talked about how to generate master and subkeys with OpenPGP and copy them into Yubikey The “Authentication” subkey generated there will be used for SSH Key authentication against a Linux box. Preparation on GPG4Win Go to “Kleopatra — Settings — GnuPG System — Private Keys”, …
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This post lists a simple example of using regex to match the Radius client IPs in Windows Network Policy Server (NPS) Scenario Multiple NPS Radius clients You only want NPS to execute that particular network policy for specific subnets/IP addresses. Regex in “Client IPv4 Address” Condition First, you need to create a new network policy …
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This post lists a few configuration examples for Cambium Switch TX1012. Trunk ports It is equivalent to Cisco: Trunk Port with Native VLAN It is equivalent to Cisco: Access port It is equivalent to Cisco: Useful link CLI Configuration (cambiumnetworks.com)
This post demonstrates the procedures of encrypting and decrypting files using Yubikey; GPG4Win/Kleopatra is used in this case. This post assumes you have generated the master key and subkeys in Linux Live USB and imported those keys into Yubikey. https://ictfella.com/how-to-configure-yubikey-with-gpg-generate-and-import-keys/ Install GPG4Win and verify you Yubikey keys. Download GPG4Win from the link below and install …
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This post is about configuring Yubikey with GPG — Generate and Import Keys into Yubikey. Yubikey added a “physical layer” of protection on top of GPG. Environment GPG keys are generated on the Ubuntu Live CD/USB for security and redundant considerations 2 x Yubikeys, one primary, and one backup. Generate the Master Key The first step is …
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This post is about fixing Azure application gateway server error 502, caused by duplicated/stale HTTP rules that referenced differently between the “Rules” session and “Backend pool” session Environment Similar to the previous post Under the “Rules” session Rule names are matched. Under the “Backend Pool” session The Fix Remove the duplicated/stale HTTP rule and create …
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This post is about fixing the Azure application gateway issue caused by health probe settings. Environment Azure Application Gateway Standard Tier, Medium SKU, one instance count Network setting such as VNET peering, subnets, route tables No NSG, firewall and Web Application Firewall in place The backend pool, backend settings, listeners and rules are all looking …
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This post is about fixing “%PM-4-ERR_DISABLE: pagp-flap error detected” error on Cisco switch Error log Root cause From the log, we can see the related ports just flap like crazy Fix Find out the reason for the physical connectivity issue. To configure auto recovery and extend the threshold, please use the command below: Useful link …
This post is about fixing Ubuntu 22.04 Freeze at login screen and no Wi-Fi Adapter found issue, following with the previous post: Environment Dell Latitude 7390 Intel Integrated Graphic card UHD 620 Intel(R) Dual Band Wireless-AC 8265 Ubuntu Freeze at Login Screen It is frustrating when you just completed the Ubuntu 22.04 installation on the …
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