pfSense Network Diagram Install pfBlockerNG for pfSense The image below is the lab diagram for the pfSense environment that will be used in this article. The reason for these assumptions here is simply for sanity’s sake and many of the tasks that will be completed, can still be done on a non-clean slate pfSense box. It should be noted that pfBlockerNG can be configured on an already running/configured pfSense firewall.
The IP scheme being used on the LAN side is 192.168.0.0/24.The firewall only has a WAN and a LAN port (2 ports).pfSense is already installed and has no rules currently configured (clean slate).This article will make a couple of assumptions and will build off of the prior installation article about pfSense. 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. Add the lines below to your /usr/local/etc/unbound.In an earlier article the installation of a powerful FreeBSD based firewall solution known as pfSense was discussed. If you want to use DNS over TLS, you can forward requests to a TLS-capable recursive server, for example Cloudflare (1.1.1.1) or Quad9 (9.9.9.9). Server: # log verbosity verbosity: 1 interface: 127.0.0.1 access-control: 127.0.0.1/8 allow chroot: "" username: "_unbound" auto-trust-anchor-file: "/usr/local/etc/unbound/root.key" # answer DNS queries on this port port: 53 # enable IPV4 do-ip4: yes # disable IPV6 do-ip6: no # enable UDP do-udp: yes # enable TCP, you could disable this if not needed, UDP is quicker do-tcp: yes # which client IPs are allowed to make (recursive) queries to this server access-control: 10.0.0.0/8 allow access-control: 127.0.0.0/8 allow access-control: 192.168.0.0/16 allow root-hints: "/usr/local/etc/unbound/root.hints" # do not answer id.server and hostname.bind queries hide-identity: yes # do not answer rver and version.bind queries hide-version: yes # will trust glue only if it is within the servers authority harden-glue: yes # require DNSSEC data for trust-anchored zones, if such data # is absent, the zone becomes bogus harden-dnssec-stripped: yes # use 0x20-encoded random bits in the query to foil spoof attempts use-caps-for-id: yes # the time to live (TTL) value lower bound, in seconds cache-min-ttl: 3600 # the time to live (TTL) value cap for RRsets and messages in the cache cache-max-ttl: 86400 # perform prefetching of close to expired message cache entries prefetch: yes num-threads: 4 msg-cache-slabs: 8 rrset-cache-slabs: 8 infra-cache-slabs: 8 key-cache-slabs: 8 rrset-cache-size: 256m msg-cache-size: 128m so-rcvbuf: 1m private-address: 192.168.0.0/16 private-address: 172.16.0.0/12 private-address: 10.0.0.0/8 private-domain: "home.lan" unwanted-reply-threshold: 10000 val-clean-additional: yes # additional blocklist (Steven Black hosts file, read above) include: /usr/local/etc/unbound/nf remote-control: control-enable: yes control-interface: 127.0.0.1 server-key-file: "/usr/local/etc/unbound/unbound_server.key" server-cert-file: "/usr/local/etc/unbound/unbound_server.pem" control-key-file: "/usr/local/etc/unbound/unbound_control.key" control-cert-file: "/usr/local/etc/unbound/unbound_control.pem"
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