In March 2014 I was a team lead for a small networking team in an Angolan ISP. After 5 years contributing the best I could to get the company of it’s feet, the time was coming for the progression many wished in their professional careers. I was invited to be the head of IT. Niiice!!! Continue reading
The interest in cloud computing has been growing inside me for quite a while. Its advantages, how it works and the technologies involved.
In the middle of all this I found a very interesting document that I saved from being eaten by my son. I was lucky to arrive on time.
Demystifying the Cloud helps us understand the history and the path taken to where we are today, virtualization, the essential characteristics of the cloud and in the end quickly describes the top 3 cloud computing providers. While it was written in 2012 and I already knew parts of it, it was still relevant to remind me of the concepts and strengthen my little knowledge.
You can download the document here: https://mvctips.tradepub.com/free/w_jana01/prgm.cgi
From very early in my networking career I have been fascinated by protocol details, packet captures and the features of my top 3 application troubleshooting tool: Wireshark.
Getting the captures on the endpoints (clients/servers) is relatively easy but things can get difficult when you want to capture traffic somewhere in between and is hard to do port mirroring (SPAN) on some remote switch.
Packet Capture Capabilities of Cisco Routers and Switches is an old video (4 years is old right?) posted on the Cisco Support Forums that highlights different methods to get on box packet captures in Wireshark .pcap format or in text output.
KRACK is the short name for an attack to the WPA (Wi-Fi Protected Access) security protocol, both WPA1 and WPA2. The vulnerability allows Wi-Fi traffic to be decrypted withouth knowledge of any keys even when using “secure” encryption like WPA2 (personal or enterprise).Continue reading
Ever since I was a young man my father always told me:
“The best way for you to learn something is to accept the challenge to teach someone”
Teaching was never on my list of strenghts. I ran away from it the best I could until years ago, where I learned that the above statement was in fact true and I started to lose the fear of public speaking. It is only when you try to teach someone you find out the little details we are still missing.
Recently I started a similar challenge, not because I was asked to, but because I offered myself to strengthen the knowledge on both sides, the one who teaches and the one who learns. Its a “win-win situation”. A “customized training” to a small group of employees about the fundamentals of routing and the OSPF protocol up to CCNP level.
So… It’s now time to find out a bit about what I still know and refresh whatever has already run away.
Back to the basics!
“Knowledge is nothing unless shared and put into practice”
During the first ever Expansão Telecommunications Forum (Expansão is an angolan economics newspaper)I spoke to a few people about hosting services. During our conversation, an angolan service provider employee said:
We have cloud hosting in our data center, why don’t you host your services there?
I knew that provider didn’t really offer cloud services but that started a battle in my mind since while I knew the services from that provider were not really cloud, I couldn’t explain why.
So, what is the cloud? Continue reading
I recently came across a podcast called Network Collective which is know into its 6th episode. Of course these days there are millions of podcasts but this one in particular is interesting because it touches on a few points with which I agree.
The topic for this 6th episode was “What I Wish I Had Known” and the conversation is around what guests, with many years of work experience, know now but they wish they would know in the beginning of their careers. Continue reading
On April 11th 2017, well on the edge and on the last day before the old CCNA DC exams expiring I finally gog my CCNA Data Center certification, more than a year after starting the studies.
Was it hard? Yes, but no so much for the content.