Fredrik Holmberg

Network Consultant  

Category: Uncategorized

Consulting Services

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As requested you can now find information about my Consulting Services.

Get in touch if you’re interested in discussing business opportunities.

Have a nice day!

App troubleshooting using Wireshark

Remember those glory days when phones still had buttons? Before the selfie stick era. I used my phone to send SMS messages and call people. Browse the internet using WAP. Send a hi-def 320x240px picture now and then using MMS. The only pieces of software I had to deal with were the pre-installed stock applications (renamed to “apps” by Apple in 2008). All other internet activities had to be done on a computer.

Today, the phone is a touch screen that allow you to interact with apps. Everything is done through apps. We use them to buy tickets, share pictures with grandparents, access our bank account, post a picture of today’s dinner. So what happens when your favorite app stops working all of a sudden? How do you troubleshoot it?

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Slapstick

Connecting our Juniper lab to the world

A young Michael Caine doing Juniper labs.

A young Michael Caine enjoying Juniper labs.

Let’s say you have a Juniper EX switch that you want to connect to your new virtual lab. Maybe you’re training for the JNCIP-ENT. Maybe you need to verify reachability to a production network over an IPsec VPN tunnel. How do you connect your virtual Juniper lab to the world?

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