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Showing posts from January, 2021

Ping Freezes

Issue: When you tried to Ping a Server it freeze. or very slow to reply. Even though the server is up and running. Action Done to Solve the Issue: Reset the TCP/IP.   1.To be safe Login as console / ILO (not remote) 2. Take note of those IP's. Make screenshots of those ip details you have. You need this because IP on the networks will run remove once you run the commands. 3. Run as Administrator on command then type:  netsh int ip reset. 4. Reboot the server. then set up the return back the ip details. Note: if the Server affected is Solarwind Server you need to do the following: - Stop the Collector and JobEngine Service.  - Clear Collector and JobEngine SDF files then start both services

Understanding CRL Certificate

What is a Certificate Revocation List? A certificate revocation list, more commonly called a  CRL , is exactly what it sounds like: a list of digital certificates that have been revoked. A CRL is an important component of a  public key infrastructure  (PKI), a system designed to identify and authenticate users to a shared resource like a Wi-Fi network. The CRL is populated by a  certificate authority  (CA), another part of the PKI. Importantly, only the CA that issued the certificate has the power to revoke it and place it on the CRL. A user requests access to the network through the access point and submits their digital certificate for authentication. The access point sends the certificate to the RADIUS server, which checks if it is expired or not. If it’s still valid, the RADIUS checks the directory (such as Active Directory) of approved users. If the user is approved, the RADIUS checks the CRL to confirm that their certificate has not been revoked. If all of...