Posting tech content & memes | CCNA + CCNA Security certified | Learning, sharing & enjoying the journey ๐โโ๏ธ | DM for PR/Collabs
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Joined November 2024
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Cisco is upgrading the CCNA certification for the first major time since 2019 ๐
Hereโs whatโs changing, what it means for current CCNA holders, and how to stay ahead ๐งต
Have you ever wondered how a 1GB folder can be compressed into just 400MB?
Here's a video explaining how file compression works.
New network engineer got hired right after passing his CCNA.
He was excited. Spent six months studying subnetting, the OSI model, routing protocols. Memorized everything. Passed the exam.
First week on the job, a switch went down.
He started talking about spanning tree and VLAN configurations.
IT manager asked if anyone had checked the power cable.
It was unplugged.
He said that wasn't covered in the CCNA.
Next week, users couldn't print.
He started checking IP addresses, subnet masks, and default gateways.
Someone turned the printer off.
He said printer maintenance wasn't his job.
A router started dropping packets.
He opened his notes on BGP and OSPF.
I asked if he'd checked the interface counters.
He said he didn't spend months studying networking to troubleshoot basic issues.
I told him that's literally what troubleshooting is.
Then he spent two hours designing a redundant OSPF topology for a five-person office.
The IT manager asked why.
He said high availability.
The manager said we have one ISP, one router, and no budget for redundancy.
He printed the topology, framed it, and put it on his desk.
Now, whenever something breaks, he looks for a complex networking problem to solve.
Meanwhile, the rest of us are checking cables, reading logs, verifying configurations, and asking users what changed.
Six months later, he still has the framed topology.
The office still has one router.
And the printer is still turned off every other Tuesday.
But at least someone in the office knows OSPF.
It's not just about passing the CCNA. You need to understand what you're learning and how to apply it in real-world situations.
If you want to learn networking the right way from someone with over 15 years of industry experience, check out @mmusaktk and his upcoming CCNA class.
Details below.
I think I just found the perfect opportunity for anyone working towards their CCNA.
@mmusaktk is starting a 2-month live CCNA class this Saturday, October 31.
Here's what you get:
- Complete CCNA coverage: ITN, SRWE, and ENSA
- Live weekend sessions with Packet Tracer and CML labs
- Class recordings and AI-generated summaries
- Bonus courses on Subnetting Mastery and Data Center Foundations
- Eligible students can earn a 58% CCNA exam voucher through Cisco Networking Academy requirements.
The class is normally $100, but the first 20 registrations get it for $75 with code CCNA25.
If you're serious about getting your CCNA, check out the details below.
Registration: LearnWithMoosa.com
If you're planning to take the CCNA exam, pay attention to this.
Cisco is updating the CCNA exam on February 3, 2027.
If you've been putting off your preparation or struggling to figure out where to start, this is a good time to get serious about it.
Check this out
I think I just found the perfect opportunity for anyone working towards their CCNA.
@mmusaktk is starting a 2-month live CCNA class this Saturday, October 31.
Here's what you get:
- Complete CCNA coverage: ITN, SRWE, and ENSA
- Live weekend sessions with Packet Tracer and CML labs
- Class recordings and AI-generated summaries
- Bonus courses on Subnetting Mastery and Data Center Foundations
- Eligible students can earn a 58% CCNA exam voucher through Cisco Networking Academy requirements.
The class is normally $100, but the first 20 registrations get it for $75 with code CCNA25.
If you're serious about getting your CCNA, check out the details below.
Registration: LearnWithMoosa.com
I think I just found the perfect opportunity for anyone working towards their CCNA.
@mmusaktk is starting a 2-month live CCNA class this Saturday, October 31.
Here's what you get:
- Complete CCNA coverage: ITN, SRWE, and ENSA
- Live weekend sessions with Packet Tracer and CML labs
- Class recordings and AI-generated summaries
- Bonus courses on Subnetting Mastery and Data Center Foundations
- Eligible students can earn a 58% CCNA exam voucher through Cisco Networking Academy requirements.
The class is normally $100, but the first 20 registrations get it for $75 with code CCNA25.
If you're serious about getting your CCNA, check out the details below.
Registration: LearnWithMoosa.com
๐ค Paid partnership
๐๐๐ฆ๐ณ๐ | Networking Guy retweeted
๋คํธ์ํฌ ์์ง๋์ด๋ง ๊ณต๋ถ์ ์์ค์ฝ ํจํทํธ๋ ์ด์๋ ๋น์ด๊ณ ์ ์ด๋ค. ์๋ฐฑ ์์ฒ๋ง์ํ๋ ์ฅ๋น๋ฅผ ์ง์ ๋ค๋ฃจ์ง ์๊ณ ๋ ์ค๊ณํ ์ ์๋ค๋.
๋ฌผ๋ก ์ด๋ก ์ ๋ฐฐ๊ฒฝ๋ ๊ฝค ํ์ํจ.
์๋ฅผ ๋ค์ด STP๋ฅผ ์ค์ ํ๋ ๋ฒ๋ง ์๊ณ ์ด๋ค ์๋ฆฌ๋ก ๋์ํ๊ณ ์ ์ถํ๋์ง ๋ชจ๋ฅด๋ฉด ์ถํ ๋ฌธ์ ๊ฐ ์๊ธธ ์ ์๋๊ฑฐ์ฒ๋ผ.
Network engineering feels so difficult to learn because people spend too much time reading about it and not enough time actually doing it.
Most concepts I read about seem foreign to me until I configure them on a physical switch and see how they work in real time.
I'm not saying networking isn't hard, but the more I practice, the more things click, and the more I enjoy it.
If you don't have physical equipment, please download Cisco Packet Tracer and start building networks. Configure VLANs, practice routing, assign IP addresses, break things and troubleshoot them. Don't just read about networking when you can experiment with it yourself.
You can build entire network topologies and practice a huge range of concepts without spending money on hardware. Physical equipment will still teach you things Packet Tracer can't, but it's a great place to start.
I'm nowhere close to being a professional network engineer, and I still have a lot to learn. I'm just glad I got to work with physical equipment early instead of spending all my time reading PDFs about how networking works.
Someone could potentially hack your iPhone by sending you a Telegram sticker.
You wouldn't even have to tap it.
Security researcher Saifeldeen Aziz says he discovered zero-click vulnerabilities in Telegram's sticker processing that he chained to achieve code execution on iOS.
Here's why that's concerning:
What can you do to protect yourself?
Keep Telegram and your operating system updated.
Go to Settings โ Privacy and Security and review who can contact you and add you to groups.
These settings may reduce your exposure to unwanted contacts, but they aren't a guaranteed defence against a zero-click vulnerability.
The bigger problem?
An app can validate incoming content on its servers and still contain vulnerabilities in the code that processes that content on your device.
That's why security checks need to exist at multiple layers.
A sticker should never be an entry point into your phone.
Research: offensivecon.jp/speakers/202โฆ
๐๐๐ฆ๐ณ๐ | Networking Guy retweeted
There are more to networking in offensive security than just โcalculating subnetโ! You donโt need to be a guru but basic concepts will save your life.
99% of cybersecurity experts who were forced to learn subnetting when starting out have probably never calculated a subnet manually in their actual jobs.
