Welcome to our vibrant hub for all things networking and computing! At CellStream, we believe in empowering you with the knowledge to master your digital world. Whether you’re a beginner looking for foundational advice or a tech-savvy enthusiast seeking advanced techniques, our Computing Tips section is your go-to destination.
If there is something you need help on or something you would like to see added here, just drop us a line at our Discord server and we will be glad to try and help.
Be careful, not all tips work on all networking equipment nor operating systems.
Before I start, a couple of warnings. Make sure you are running one of the latest (10.x or 11.x) versions of Ubuntu Server. You can get this from the Ubuntu Web Site. Also make sure you have installed on the latest updates to your system. The procedure I have noted is done from the command […]
Setting up A Web Server in Ubuntu Server 10.x and greater Read More »
This is really simple.We have chosen OpenSSH as the best software for the job. Begin by opening a Terminal Window on the server. Enter the following command to install OpenSHH:sudo apt-get install openssh-server Done! To test that it’s working, you can try to ssh into the server: ssh localhost You will be prompted for a
Setting up a SSH Server in Ubuntu Server 10.x and above Read More »
Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture Perhaps…. Wireshark uses a custom syntax to create display filters. There are millions of possibilities, but here is perhaps a top 10 list. Of course you can edit these with
Perhaps a top 10 Wireshark Display Filter List Read More »
Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School The following is a list of IPv6 operations and their associated How To links for Ubuntu. Please feel free to comment on additional links that others can use: Ubuntu
Links to Ubuntu IPv6 How To’s Read More »
Hi everyone! [Wow – this was a long time ago! As of 2020 I have updated a little.] One of the challenges to any computer user is keeping software up to date with the latest features, bug fixes, and security patches. Often this tedious process requires opening applications and seeing if the have an “update”
Keeping your Windows PC Software Up to Date Read More »
Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School Here are some great Windows command line entries you can make to examine and configure IPv6 (assuming your version of Windows does so). We will discuss use of the “netsh”
IPv6 Windows Command Line Examples Read More »
Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School Here are some great Linux command line entries you can make to examine and configure IPv6 (assuming your version of Linux ipconfg does so). Let’s start with some simple ones.
IPv6 Linux Command Line Examples Read More »
Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School Before I get started, let’s just clarify that besides MacOS or macOS, IPv6 is supported on iOS, ipadOS, tvOS, watchOS as well as on visionOS. The kernel that drives all
IPv6 MacOS Command Line Examples Read More »
We have previously written praise for Ubuntu as an operating system. The regular Ubuntu desktop OS can be found here. Some of you may prefer the Ubuntu Server that can be found here. If you install the Ubuntu Server, when the system boots the first time, you will find out very quickly that by default
Installing the Desktop for Ubuntu Server Read More »
If you own a Netbook or laptop, you may be surprised by the new default look of the latest Ubuntu release. I have tried to like it on my Netbook. I have completely complied with the neverending typing of application names to find my common apps. Some of my colleagues have reported horrible problems, but
Fixing the Ubuntu 11.x User Interface Read More »
Hi everyone! As most of our students and felow workers know, we love and have been avid users of GNS3 for several years now. We always try to help folks get started on this great free softwar. You can do/learn so much with/about Network Science by simply using GNS3, and the greatest part of it
Five Simple Steps to GNS3 Setup Read More »
With more and more networking professionals tackling IPv6 and the changes incorporated into this next generation protocol, necessity requires that we look closely at the Internet Control Message Protocol as it has been highly modified for IPv6 support. The experiment outlined below will walk you through a packet capture that contains ICMPv6 packet exchanges. You
Experimenting with ICMPv6 Read More »
Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School With more and more networking professionals tackling IPv6 and the changes incorporated into this next generation protocol, necessity requires that we look closely at the Internet Control Message Protocol as
Experimenting with DHCPv6 Read More »
Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School We are often asked, how do you enable IPv6 on a computer? With all the various versions of operating systems out there, this is no simple answer. What we have
Enabling IPv6 on a Computer Read More »
Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School As more and more people are discovering IPv6, there is a tendency to test and play with the technology. First, you can generically turn off IPv6 on an interface in
Disabling IPv6 and IPv6 Tunnel Communications Read More »