IPv6 Hacking – “thc-ipv6” [Part 2]
A while back I did a post called IPv6 Hacking - “thc-ipv6” Part 1 - it was, in fact, the first post here on Keeping It Classless. That post focused on the flood_router6 script, which unleashed a flood of IPv6 Router Advertisements (RAs) on a layer 2 network segment, bringing vulnerable operating systems like Windows 7 to their knees. The “fake_router6” script is another member of the “thc-ipv6” suite that grants a powerful weapon to a would-be attacker.Configuring OSPF Between Vyatta and Cisco IOS
This is a guide to configuring OSPF between Cisco IOS and the open-source Vyatta router platform. I was able to do all of this on my desktop PC, by running Cisco IOS in GNS3 and Vyatta as a virtual machine. I used the guide here to bridge both virtual routers together, so that communication could be established. The Cisco side was pretty straightforward. I configured the FastEthernet interface and enabled OSPF on it:Configuring OSPF Between Vyatta and Cisco IOS
This is a guide to configuring OSPF between Cisco IOS and the open-source Vyatta router platform. I was able to do all of this on my desktop PC, by running Cisco IOS in GNS3 and Vyatta as a virtual machine. I used the guide here to bridge both virtual routers together, so that communication could be established. The Cisco side was pretty straightforward. I configured the FastEthernet interface and enabled OSPF on it:OSPF Won’t Redistribute My Static Routes!
I was working on some CCNP ROUTE labs, and I was attempting to rebuild a basic OSPF lab from memory. The lab included practice with inter-area route summarization, and static route redistribution. I ran across a problem that seems to be plaguing others, at least according to google, but my searches didn’t yield a solution to my specific problem, which was that the static routes I had created weren’t being redistributed by OSPF.OSPF Won’t Redistribute My Static Routes!
I was working on some CCNP ROUTE labs, and I was attempting to rebuild a basic OSPF lab from memory. The lab included practice with inter-area route summarization, and static route redistribution. I ran across a problem that seems to be plaguing others, at least according to google, but my searches didn’t yield a solution to my specific problem, which was that the static routes I had created weren’t being redistributed by OSPF.The Global Internet Speedup (NOT)
I recently saw posts from a few sources on a new initiative backed by a consortium that includes Google and OpenDNS to attempt to improve the overall speed of the internet by optimizing the way DNS works on the internet. If you think about it, a great deal of internet traffic is high-volume requests for things like photos, music, video, and the like. You may know, then, that content providers like Akamai have positioned themselves globally around the world to provide this content at a relatively close physical location to those requesting it.The Global Internet Speedup (NOT)
I recently saw posts from a few sources on a new initiative backed by a consortium that includes Google and OpenDNS to attempt to improve the overall speed of the internet by optimizing the way DNS works on the internet. If you think about it, a great deal of internet traffic is high-volume requests for things like photos, music, video, and the like. You may know, then, that content providers like Akamai have positioned themselves globally around the world to provide this content at a relatively close physical location to those requesting it.New Feature – Keeping It Classless LABS
I’m pleased to announce a new feature on the site. I’m going to start publishing some articles on more fundamental concepts in networking in the form of video walk throughs / labs. I wanted to free up the main blog feed for some more advanced topics, and a lot more of an overall network design discussion, as well as the occasional fun stuff. Several people have approached me in the past about making something like this that would help beginners learn the fundamentals, and at the time I wasn’t able to, but I feel like I’m able to do them now.Keeping It Classless Labs – Static Routing
This is the first in what I hope to be a useful series on configuration/walk through videos aimed at educating up-and-coming networking professionals on some of the more fundamental concepts. Today we’ll be looking at static routing and how to configure it in a small Cisco network. Below are the lab files (GNS3) and the videos themselves. Download the Lab Outline Download the GNS3 Lab used in this video Since it’s a new Youtube channel, I’m limited to 15 minutes per clip, and therefore had to break it into two parts.New Feature – Keeping It Classless LABS
I’m pleased to announce a new feature on the site. I’m going to start publishing some articles on more fundamental concepts in networking in the form of video walk throughs / labs. I wanted to free up the main blog feed for some more advanced topics, and a lot more of an overall network design discussion, as well as the occasional fun stuff. Several people have approached me in the past about making something like this that would help beginners learn the fundamentals, and at the time I wasn’t able to, but I feel like I’m able to do them now.Keeping It Classless Labs – Static Routing
This is the first in what I hope to be a useful series on configuration/walk through videos aimed at educating up-and-coming networking professionals on some of the more fundamental concepts. Today we’ll be looking at static routing and how to configure it in a small Cisco network. Below are the lab files (GNS3) and the videos themselves. Download the Lab Outline Download the GNS3 Lab used in this video Since it’s a new Youtube channel, I’m limited to 15 minutes per clip, and therefore had to break it into two parts.New Feature – Keeping It Classless LABS
I’m pleased to announce a new feature on the site. I’m going to start publishing some articles on more fundamental concepts in networking in the form of video walk throughs / labs. I wanted to free up the main blog feed for some more advanced topics, and a lot more of an overall network design discussion, as well as the occasional fun stuff. Several people have approached me in the past about making something like this that would help beginners learn the fundamentals, and at the time I wasn’t able to, but I feel like I’m able to do them now.Keeping It Classless Labs – Static Routing
This is the first in what I hope to be a useful series on configuration/walk through videos aimed at educating up-and-coming networking professionals on some of the more fundamental concepts. Today we’ll be looking at static routing and how to configure it in a small Cisco network. Below are the lab files (GNS3) and the videos themselves. Download the Lab Outline Download the GNS3 Lab used in this video Since it’s a new Youtube channel, I’m limited to 15 minutes per clip, and therefore had to break it into two parts.My Three Favorite “Pop Culture Meets Computers” EPIC FAILS
The television and video game industry are just absolutely RIDDLED with terrible attempts at referencing technology. Typically, these scenes will try to delve into some sort of computer-like concept, often related to computer networking, to try to improve the modernity of the content. Before you say anything, I did pull a bit of inspiration from this Cracked article, but there are a few I’ve encountered on my own. I hope you enjoy!My Three Favorite “Pop Culture Meets Computers” EPIC FAILS
The television and video game industry are just absolutely RIDDLED with terrible attempts at referencing technology. Typically, these scenes will try to delve into some sort of computer-like concept, often related to computer networking, to try to improve the modernity of the content. Before you say anything, I did pull a bit of inspiration from this Cracked article, but there are a few I’ve encountered on my own. I hope you enjoy!Cisco Nexus User Roles using TacPlus
I previously wrote a post about the Nexus Roles and how they integrate with a TACACS server. Cisco Documentation shows the following format to issue multiple roles from a TACACS/RADIUS server.: We are using Shrubbery TACPLUS, instead of the Cisco ACS software. Last week I noticed that only one role was assigned when multiples should […]
Three Traits of an Effective Network Engineer
Over the past few years, I’ve made some observations about the people I’ve worked and communicated with. Some of these people were colleagues, others acquaintances, and still others were simply bloggers that I look up to. I’m talking specifically of those people that are in my field of Network Engineering, and they all share a few traits in common. I’ve deemed a few of these traits to be important things to remember when trying to make yourself a better network engineer, and a better IT professional in general.Three Traits of an Effective Network Engineer
Over the past few years, I’ve made some observations about the people I’ve worked and communicated with. Some of these people were colleagues, others acquaintances, and still others were simply bloggers that I look up to. I’m talking specifically of those people that are in my field of Network Engineering, and they all share a few traits in common. I’ve deemed a few of these traits to be important things to remember when trying to make yourself a better network engineer, and a better IT professional in general.Low Memory Handling
Memory problems on routers is nothing new. It is generally less of a problem in current day, but is still seen from time to time. BGP is capable of handling large amount of routes and in comparison to other routing protocols, BGP can be a big memory hog. BGP peering devices, especially full internet peering […]