Browsed by
Category: firewall

Configuring Quad9 on pfSense

Configuring Quad9 on pfSense

Quad9 is a DNS platform that adds several layers of security. It does this via standard DNS queries/responses.Basically, if a machine on your network queries a known bad hostname, the Quad9 DNS server responds by stating that domain does not exist (NX DOMAIN or non-existent domain). Quad9 also allows you to use DNS over TLS. If you would like a bit more info on Quad9 including some speed benchmarks against other DNS services, I would suggest an earlier article, Quad9 – First…

Read More Read More

Quad9 – First Thoughts & Benchmarks

Quad9 – First Thoughts & Benchmarks

Quad9 is the collaboration of IBM X-Force, PCH, and Global Cyber Alliance. It provides a DNS platform that combines high performance with security by blocking known malicious domains. At the time of this writing, Quad9 was using 19 threat feeds. I’m not going to get into the marketing speak because quite frankly, enough folks cover that well enough. Quad9 <- Main Site New “Quad9” DNS service blocks malicious domains for everyone <- Ars Technica Instead, I’ll provide the bare essentials…

Read More Read More

Sending pfSense logs to the DShield project

Sending pfSense logs to the DShield project

Changelog 02June2017 – Originally posted 28Nov2017  – Updated due to script changes What is DShield and why would I send them my logs? According to the SANS Internet Storm Center (ISC), “DShield provides a platform for users of firewalls to share intrusion information. DShield is a free and open service.” While DShield is often referred to generically as a “collaborative firewall log correlation system,” for all practical purposes, it is a bit of threat intelligence well before threat intelligence was…

Read More Read More

Securing Open RDP Ports

Securing Open RDP Ports

Mr. Mackey says it best — Open RDP ports on the internet are bad… mmmmkay. When you are architecting an environment, you should avoid them like the plague. Even on an internal network, you should avoid them. Otherwise, you are just asking for problems at some point whether it is someone pounding away looking for a username/password combination or a remote vulnerability in the service. Compromised servers (via RDP) are mainstays for criminal jump points and some are even monetizing…

Read More Read More

Using pfBlockerNG (And Block Lists) On pfSense

Using pfBlockerNG (And Block Lists) On pfSense

If you are also interested in pfBlockerNG (DNSBL) for ad and malvertising blocking, I have a walk-through on it here!  –> Blocking Ads & Malvertising on pfSense Using pfBlockerNG (DNSBL) <– In a previous post, I talked about implementing blocklists (aka IP reputation lists, ban lists, blacklists, etc.) generically on nearly any firewall to improve your security. The examples I used were on pfSense and OPNsense. I also discussed the methodology and some background as well so if you’re just coming into…

Read More Read More

Using Firewall Block Lists

Using Firewall Block Lists

Changelog 28Feb2017 – Originally posted 19Mar2017 – Added firehol_level3 section 15Feb2018 – Added outbound/LAN rule section This guide is primarily for anyone using a firewall other than pfSense. If you are using pfSense, I would strongly suggest following my guide written specifically for pfSense (and pfBlockerNG). That guide replicates/mirrors much of the work below and also adds to it.  https://www.linuxincluded.com/using-pfblockerng-on-pfsense/ IP reputation lists (aka IP blacklists, ban lists, block lists, etc.) are fairly plentiful and some are better (more IPs…

Read More Read More