firewall
Demystifying Commonly Misused IT Terms
In the fast-paced realm of technology, jargon, and buzzwords often take center stage. Yet, amidst the whirlwind of innovation, some terms are misused or misunderstood, leading to confusion rather than clarity. Let’s untangle a few of these commonly misused IT terms and shed light on their accurate definitions. 1. Cloud Computing vs. The Cloud Misconception: … Read more
Best Practices to secure Mikrotik routers.
This is a quick and simple post on how to get the most efficient and secure operation out of your Mikrotik router. If you follow these six principles, you will be on your way to a secure deployment.
What does a modern firewall do?
A firewall is a network security device or software that acts as a barrier between your internal network and the outside world, typically the Internet. Its primary function is to monitor and control incoming and outgoing network traffic based on predefined security rules to protect your network from unauthorized access, malware, and other cyber threats. … Read more
Quick and Dirty Baicells eNODEB Mikrotik Rules
If you have a Baicells eNodeB you wish to restrict access to these Mikrotik rules will help. There are some assumptions made. The following rules are meant to be a base for incorporating into your network. /ip firewall filteradd action=drop chain=forward src-address=10.0.0.2 src-port=443 protocol=tcp \ dst-address-list=!baicells_cloudadd action=drop chain=forward src-address=10.0.0.2 src-port=8082 protocol=\ tcp dst-address-list=!baicells_cloudadd action=drop chain=forward src-address=10.0.0.2 src-port=48080 … Read more
WIFI calling port forwarding
Recently I came across a need to do some port forwarding for wifi calling. I have assembled a resource guide to help you if you need to do such things. IPSEC should be allowed per RFC 5996 https://tools.ietf.org/html/rfc5996 for all wifi calling Verizonhttps://community.verizonwireless.com/t5/Verizon-Wireless-Services/What-are-the-wifi-calling-firewall-ports-and-destination-IP/td-p/1080659UDP ports 500 and 4500 open to sg.vzwfemto.com and wo.vzwwo.com TMobilehttps://www.t-mobile.com/support/coverage/wi-fi-calling-on-a-corporate-networkIPv4 Address Block: 208.54.0.0/17 and … Read more
Mikrotik BGP firewall rules for security
This content is for Patreon subscribers of the j2 blog. Please consider becoming a Patreon subscriber for as little as $1 a month. This helps to provide higher quality content, more podcasts, and other goodies on this blog.To view this content, you must be a member of Justin’s Patreon Unlock with PatreonAlready a qualifying Patreon … Read more
Updated Mikrotik firewall script from Rick Frey
Our friend Rick Frey has updated his Mikrotik Firewall script for securing RouterOS
Interesting product: Firewalla
Interesting product. https://firewalla.com/
Working with some Netgate/Pfsense Firewalls
Just a little firewall switch today. Netgate firewall appliance switched out to replace some old Cisco ASAs. #packetsdownrange
ISP vs Enterprise networks
I recently was hanging out with an ISP admin who moved over from the Enterprise world. After a few days with him, it rekindled the interest in writing this article. From a high level, a network is a network. Its job is to move bits to and fro. The goals of the network are where … Read more
Some firewall and switch work
Some dell servers going in for a client. Cisco 3063 switches, Palo Alto firewalls. The yellow and red power cables denote A and B power.