Configuring pfSense High Availability with CARP for Firewall Failover
Step‑by‑step guide to configure pfSense HA with CARP, including prerequisites, VIP configuration, XMLRPC sync, verification, and failover recovery.
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Securing Ubuntu Server Traffic with Uncomplicated Firewall (UFW)
Learn how to implement a default-deny network policy on Ubuntu Server using UFW to block unauthorized access while maintaining SSH and web service connectivity.
ubuntuIPv6 Firewall Options Visibility in YaST on OpenSUSE Leap 15.6
In OpenSUSE Leap 15.6 the YaST firewall module (YaST 3.3.1) presents an IPv6 checkbox that must be enabled manually. The module does not automatically detect whether the running kernel has IPv6 support, so the checkbox remains visible even when the kernel is compiled without IPv6. Enabling the checkbox in such a scenario has no effect and YaST logs a generic
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