I’ve always had a difficult time when attempting to remember how to implement the different types of NAT available on ASA and IOS devices. It doesn’t help that between the two device families, there are three different syntax versions used in the configurations. I created the PDF linked below as a quick reference sheet. It […]
The post Cisco NAT Cheat Sheet appeared first on Packet Pushers Podcast and was written by John W Kerns.
Despite key losses, IBM is expanding SDN.
A few days after the Networking Field Day 9 event Nick Buraglio organized a virtual meetup with Brandon Carroll, Brandon Mangold, Bob McCouch and myself, and we discussed the presentations from NEC, Cumulus, Cisco and Brocade. Nick recorded the conversation and so Episode 26 of Software Gone Wild was born.
There are 12 networking questions below. Most of them relatively basic networking questions. Although this post is related with networking basics, click here to solve advanced networking tests. If you liked this test, you will like this too. How was it ? Leave your comment in the comment box.
The post Networking Basics – Test2 appeared first on Network Design and Architecture.
Information on remote port mirroring on Junos routers doesn’t seem to be very easy to come by for some reason – there is quite a lot of information about doing this on EX switches (a bit like RSPAN in Cisco’s IOS), which wasn’t what I needed. Various other sources of information (such as Cluepon) say this can be done using a GRE tunnel, but that the capturing device needs to be a server that terminates the GRE tunnel – which all seemed a bit complicated.
I needed to remotely mirror a port on an MX to a second MX where a windows-based Wireshark was connected, so getting GRE working to a Windows host sounded like a non starter.
So I had to work it out myself – and hopefully this write-up will prove useful to someone else in the future.
An additional requirement for the customer was that the captured interface should be in a VRF, so the test-bed I set up below has production traffic flowing through a VRF, and the mirrored traffic in a GRE tunnel which is running in the global routing table.
Here’s the write-up I did for the customer:
The more I play around with Docker and Kubernetes the more I find myself needing to rebuild my lab. Config file changes are done all over the place, permissions change, some binaries are added or updated, and things get out of sync. I always like to figure out how things work and then rebuild ‘the right way’ to make sure I know what I’m talking about. The process of rebuilding the lab takes quite a bit of time and was generally annoying. So I was looking for a way to automate some of the rebuild. Having some previous experience with Chef, I thought I might give that a try but I never got around to it. Then one day I was browsing the Kubernetes github repo and noticed that there was already a fair amount of SaltStack files out in the repo. I had heard about SaltStack, but had no idea what it was so I thought I’d give it a try and see if it could help me with my lab rebuilds.
Make a long story short, it helps, A LOT. While I know I’ve only scratched the surface the Continue reading
