Networking with Israr

Networking with Israr Network Engineer | CCNA | CCNP | Fortigate Firewall | Routing & Switching | RIP, OSPF, EIGRP, BGP | VPN | Network Security
(1)

FIREWALL — Your Network’s First Line of Defense! A firewall inspects network traffic, applies security rules, blocks mal...
09/18/2026

FIREWALL — Your Network’s First Line of Defense!

A firewall inspects network traffic, applies security rules, blocks malicious activity, and allows legitimate connections to reach protected devices.

💡 CCNA Security Tip: Firewalls can filter traffic using IP addresses, ports, protocols, applications, and security policies.

❓ Quick Challenge: What does a firewall primarily do with malicious traffic?

A️⃣ Encrypts it
B️⃣ Blocks it
C️⃣ Broadcasts it
D️⃣ Stores it

👇 Comment your answer and save this for CCNA security revision.

RANSOMWARE — How One Click Can Disrupt an Entire Network! Ransomware can enter through phishing, malicious downloads, in...
09/18/2026

RANSOMWARE — How One Click Can Disrupt an Entire Network!

Ransomware can enter through phishing, malicious downloads, infected devices, or compromised websites, then encrypt files and disrupt access to critical systems.

💡 Security Tip: Reduce risk with regular offline backups, patching, endpoint protection, strong access controls, and user awareness.

❓ Quick Challenge: Which defense is most important for recovering from encrypted files?

A️⃣ VLAN
B️⃣ Offline Backup
C️⃣ Trunk Port
D️⃣ DHCP

👇 Comment your answer and save this for cybersecurity revision.

SECURE CISCO DEVICE ACCESS — Protect the Management Plane! Secure device management starts with console access for initi...
09/18/2026

SECURE CISCO DEVICE ACCESS — Protect the Management Plane!

Secure device management starts with console access for initial setup and SSH for encrypted remote administration. Avoid insecure services like Telnet, use strong credentials, and restrict unnecessary access.

💡 CCNA Tip: The command transport input ssh allows SSH on VTY lines while preventing Telnet access.

❓ Quick Challenge: Which protocol should you use for secure remote access to a Cisco device?

A️⃣ Telnet
B️⃣ SSH
C️⃣ FTP
D️⃣ HTTP

👇 Comment your answer and save this for CCNA security revision.

NETWORK AUTOMATION — Work Smarter, Scale Faster! Network automation uses tools like Python, Ansible, APIs, and Terraform...
09/17/2026

NETWORK AUTOMATION — Work Smarter, Scale Faster!

Network automation uses tools like Python, Ansible, APIs, and Terraform to configure, monitor, and manage network devices with less manual effort.

💡 CCNA Tip: Automation helps deliver faster deployments, consistent configurations, fewer errors, and better scalability.

❓ Quick Challenge: Which tool is widely used for agentless network automation?

A️⃣ Ansible
B️⃣ DNS
C️⃣ ARP
D️⃣ STP

👇 Comment your answer and save this for CCNA automation revision.

ENTERPRISE NETWORK SECURITY — Defense Works Best in Layers! A secure enterprise network combines firewalls, VLAN segment...
09/17/2026

ENTERPRISE NETWORK SECURITY — Defense Works Best in Layers!

A secure enterprise network combines firewalls, VLAN segmentation, DMZs, IDS/IPS, access controls, VPNs, and continuous monitoring to reduce risk and contain threats.

💡 CCNA Tip: Security is strongest when you prevent, segment, detect, respond, and keep systems updated.

❓ Quick Challenge: Which network zone is commonly used for public-facing servers?

A️⃣ Management VLAN
B️⃣ DMZ
C️⃣ Guest VLAN
D️⃣ Native VLAN

👇 Comment your answer and save this for CCNA security revision.

NETWORK VIRTUALIZATION — One Physical Network, Many Virtual Networks! Network virtualization uses software to create mul...
09/17/2026

NETWORK VIRTUALIZATION — One Physical Network, Many Virtual Networks!

Network virtualization uses software to create multiple isolated logical networks on shared physical infrastructure, improving flexibility, scalability, and resource utilization.

💡 CCNA Tip: Technologies such as VLANs, VRFs, SDN, and NFV are key examples of network virtualization concepts.

❓ Quick Challenge: Which technology logically separates devices into different networks on the same switch?

A️⃣ VLAN
B️⃣ ARP
C️⃣ DNS
D️⃣ STP

👇 Comment your answer and save this for CCNA revision.

IPsec VPN — How Your Data Stays Secure Over the Internet! An IPsec VPN creates an encrypted tunnel between networks, pro...
09/16/2026

IPsec VPN — How Your Data Stays Secure Over the Internet!

An IPsec VPN creates an encrypted tunnel between networks, protecting traffic with confidentiality, integrity, and authentication while it crosses the public Internet.

💡 CCNA Tip: ESP protects the data, while IKE negotiates security parameters and keys between VPN peers.

❓ Quick Challenge: Which IPsec protocol is commonly used to encrypt VPN traffic?

A️⃣ ESP
B️⃣ ARP
C️⃣ DNS
D️⃣ STP

👇 Comment your answer and save this for CCNA security revision.

SECURE A CISCO SWITCH — Start Security from Day One! A secure initial configuration helps protect your switch from unaut...
09/16/2026

SECURE A CISCO SWITCH — Start Security from Day One!

A secure initial configuration helps protect your switch from unauthorized access, weak passwords, unused ports, and insecure remote management.

💡 CCNA Tip: Use SSH instead of Telnet, configure an enable secret, disable unused ports, and secure console/VTY access.

❓ Quick Challenge: Which protocol should be used for secure remote CLI access?

A️⃣ Telnet
B️⃣ FTP
C️⃣ SSH
D️⃣ TFTP

👇 Comment your answer and save this for CCNA security revision.

MPLS — Connect Multiple Sites with Smarter WAN Routing! MPLS (Multiprotocol Label Switching) forwards traffic using shor...
09/16/2026

MPLS — Connect Multiple Sites with Smarter WAN Routing!

MPLS (Multiprotocol Label Switching) forwards traffic using short labels, helping service-provider networks deliver scalable and predictable connectivity between branches.

💡 CCNA Tip: PE routers add or remove MPLS labels, while P routers forward traffic through the MPLS core based on those labels.

❓ Quick Challenge: Which router sits at the edge of an MPLS provider network?

A️⃣ CE Router
B️⃣ PE Router
C️⃣ Access Point
D️⃣ Layer 2 Switch

👇 Comment your answer and save this for WAN networking revision.

CCNA NETWORKING Quiz? 👇 Comment your answer and save this for CCNA routing revision.
09/15/2026

CCNA NETWORKING Quiz?

👇 Comment your answer and save this for CCNA routing revision.

Address

100SH
Houston, TX
23444

Website

Alerts

Be the first to know and let us send you an email when Networking with Israr posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Networking with Israr:

Shortcuts

Share

Category