This guide will walk through configuring a pfSense firewall device to use the pfBlockerNG package as well as some basic examples of domain block lists that can be added/configured into the pfBlockerNG tool. The ability to restrict on items such as domain names is very advantageous as it allows administrators to thwart attempts of internal machines attempting to connect out to known bad domains ( in other words, domains that may be known to have malware, illegal content, or other insidious pieces of data).
PfBlockerNG provides pfSense with the ability for the firewall to make allow/deny decisions based items such as the geolocation of an IP address, the domain name of a resource, or the Alexa ratings of particular websites. As with anything in the computing world, there isn’t a one solution fixes all product out there.
PfBlockerNG is a package that can be installed in pfSense to provide the firewall administrator with the ability to extend the firewall’s capabilities beyond the traditional stateful L2/元/L4 firewall.Īs the capabilities of attackers and cyber criminals continues to advance, so must the defenses that are put in place to thwart their efforts. This article is going to talk about a wonderful add-on package for pfsense called pfBlockerNG. pfSense, as mentioned in the earlier article, is a very powerful and flexible firewall solution that can make use of an old computer that may be laying around not doing much. Then you can filter the whitelist with nxFilter.In an earlier article the installation of a powerful FreeBSD based firewall solution known as pfSense was discussed. Then I made the primary DNS Server on pfSense to be 10.127.1.240(which is my nxFilter) and the secondary DNS Server 1.1.1.1 and on NxFilter I have made my upstream DNS Server 10.127.1.254 which points back to pfSense. IPv4 TCP/UDP * * * 53 (DNS) * Block All other DNS Servers Protocol Source Port Destination Port Gateway Description If i change the DNS address on device level to the IP of any other DNS Server it auto-bypass the NxFilter which I understand it will do, thus have I implemented firewall rules to block access to any other dns server, firewall rules as follow. So I run pfSense (10.127.1.254) as the main firewall/router and on a separate device I have NxFilter (10.127.1.240) to filter the DNS content which works great. I want to filter web content at the DNS level.
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