Troubleshooting Static Routing & Policies With Watchguard Firewalls Introduction A static route is a path to a network that you manually configure on a router, firewall or other Layer 3 devices. Using static routes can be an excellent choice for smaller networks because they are simple to configure. However, in larger networks – like the […]
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How To Upgrade Cisco IOS on a Catalyst 3750 Switch Do you have a Cisco Catalyst switch and want to upgrade Cisco IOS? In the blog post I will go through everything you need to know for upgrading Cisco IOS using TFTP (Trivial File Transfer Protocol). Step 1: Verify The Current IOS Version First thing
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Layer 2 vs. Layer 3: Insights from Troubleshooting PfSense Troubleshooting The Scenario: Blocking SSH Traffic on the LAN In PfSense, I have a VLAN interface named ‘LAN’ configured to pass VLAN 10 traffic. A Raspberry Pi 4 is connected to the LAN network, which uses the 10.50.50.0/24 subnet. I want to block SSH traffic going
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Lately I have done a really good job at trying to document the fun I have in my home lab environment. My goal is to post a blog on my site at least once a week. However, in the past couple weeks I decided to increase the complexity of the network I have been building
The ways in which computers work in order to communicate across a network is truly amazing. There are so many individual parts that make up network communication and when understood how they all work together, can be appreciated. Two big protocols that have a huge role in ensuring that computers are able to communicate across
In my blog entitled “Inter-VLAN Routing Between Virtual Machines” I created two subnets and made the necessary configuration on the router and in Hyper-V Manager to communicate between hosts in two different VLANs. The configuration works great but there is one glaring limitation – scalability. If I wanted to add more VLANs and assign those
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In my last blog post, I described the process of configuring Inter-VLAN Routing and one of the pieces of hardware in my topology was a Cisco 1941 Series Gen 2 ISR Router with an 8 port Switch module. To be more accurate this 8 port switch module is called an 8 port Gigabit “Ethernet Enhanced
Why Inter-VLAN Routing? VLANs or Virtual Local Area Networks are awesome. They allow you to essentially break up one physical LAN into multiple logical or virtual LANs. When you create a VLAN on a Cisco switch and assign an interface to that VLAN, all hosts in the same VLAN are able to communicate with each
