2/ SMB is the method through which Windows systems share files. And it's also been a goldmine of vulnerabilities. ⛏️???? Don't make it world-readable. Please. Segment your networks! #CyberSecurity #Networking #SysAdmin
1/ Why must all my computers be the same time? Because NTP requires so. Security logs are useless without time sync. Forensics is hell. Auth breaks. Hackers delight in messing with time. .........
>> SSH is my best friend. It lets me connect to devices remotely via a very heavily encrypted tunnel. Safe and sound. >> SNMP is great for checking device health. but versions 1 & 2c are a security nightmare. Passwords sent in plain text!
The most important letter in tech is S. HTTP vs HTTPS FTP vs FTPS See the pattern? That 'S' is for Secure. It means everything is encrypted. Without it, you're sending your passwords on a postcard for everyone to read. Never, ever shut it down. #CyberSecurity #InfoSec #Encryption
Let's talk about the dynamic duo you use daily but might not know: DNS & DHCP. >> DHCP is the host greeting at the party. You arrive (connect to Wi-Fi), and it hands you your drink (IP address), tells you where to go to the bathroom (gateway), and who to talk to (DNS server).
Protocols & services are the internet's secret handshake. They're the rules that allow your devices to communicate, argue, and work together. Without them, digital anarchy. As a cyber sec dude, knowing these rules isn't only helpful—it's how you catch someone cheating. #Network
Ports are doors into your systems. Know these: 20/21: FTP (File Transfer) 22: SSH (Secure Shell) 23: Telnet (Insecure - avoid!) 25: SMTP (Email) 53: DNS (Internet Phonebook) 80: HTTP (Web) 443: HTTPS (Secure Web) 110: POP3 (Email) 143: IMAP (Email) 3389: RDP (Remote Desktop) #IT
IPv4 or IPv6? Why choose? Dual-stack enables devices to run both protocols at once. The simplest path to the IPv6 future. Is your network ready? #IPv6 #Networking #Tech
Did you ever notice 169.254.x.x? That's APIPA. Your computer's way of saying "I couldn't locate DHCP, so I gave myself an address." And 127.0.0.1? That is just you, talking to yourself. The definitive self-test. #ITSupport #TechTip
How is your whole team able to use one public IP? Magic? Nope, it's PAT (NAT Overload)! It uses port numbers to track connections. One of the key reasons we didn't run out of IPv4 addresses years ago. A network miracle! #IT #CCNA #Tech
Your IP has a public & private life. ???? Public IP: Your internet-facing address. Unique worldwide. ???? Private IP (10.x, 172.16.x, 192.168.x): Your home (LAN) address. Hides behind NAT for security. Understand the difference! It's easy opsec. #CyberSecurity #Networking
Subnetting 101 >> FLSM: Same-sized slice of cake for all. Simple, but wasteful. >> VLSM: Big slice for supper, little slice for a snack. Efficient as all get out! >> CIDR (such as 192.168.1.0/24) is just the address tag. Simple, eh? #Networking #CCNA #IT
Not all cables are equal! >> UTP = Easy Ethernet >> STP = Noisy areas >> Multimode fiber = Datacenters >> Single-mode fiber = Long-haul >> Plenum = Safety in air ducts #TechTips #Networking101
Think of your network as traffic, SD-WAN? It's Waze for data! ✅ Faster routes ✅ Adieu downtime tantrums ✅ Happy CFO ($ saved) IT folks, are you on team #SDWAN yet? #NetworkingMadeSimple #TechTalk My Website: its-lucio.com
Wi-Fi feels like magic—until it breaks or gets hacked. WLAN (Wireless Local Area Network) is the tech behind Wi-Fi, and while it's everywhere, so are cyber threats. 🔐 Key Takeaways: Public Wi-Fi is a hacker’s dream. 🛡️ use a VPN and avoid sensitive tasks on open networks.
WAN: The long-distance relationship of the internet 🌍💻 Body: A wide area network, or WAN, links distant networks, such as your headquarters and branch offices. Consider it the highway for data moving across oceans or cities. #networking #WAN
LANs: The OG squad goals of networking. 🚀 They keep your office devices talking fast without yelling into the internet void. But… if your LAN security is weak, hackers RSVP themselves in. 🚨 #TechTalk #CyberAware #Networking101
Three-tier vs. spine-leaf: the ultimate networking showdown! 🥊 Here’s why one might be silently killing your performance… Three-tier = old-school but stable. Spine-leaf = speed demon for cloud apps. >> If you’re not segmenting, you’re begging for a breach. #TechTwitter #Netw
Networks are like cities—some have a downtown hub (⭐ Topology), others are a free-for-all (🔗Mesh). It Depends on your needs! ⭐ Star: Easy, risky hub 🚍 Bus: Cheap, outdated 🔄 Ring: Smooth, fragile 🔗 Mesh: Strong, pricey 🧠 Pick by need: cost, scale, reliability #TechTalk
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