This tutorial focuses on VLAN networking concepts like collision and broadcast domains, inter-vlan connectivity etc.
For more detailed information on switch VLAN concepts and more CCNA concepts, https://routersimulator.certexams.com/router-labs/index.html
Cisco IOS devices provide several Layer 2 security features to help secure network switches and prevent unauthorized access. Some of the key Layer 2 security features in IOS devices include:
Port Security: This feature allows network administrators to configure specific ports on a switch to only accept traffic from authorized devices. The switch will disable any unauthorized device attempting to connect to the port or send traffic through it.
MAC Address Filtering: This feature allows network administrators to configure a list of authorized MAC addresses that are allowed to access the network. Any device that does not have a MAC address on the list will be denied access.
VLAN Access Control Lists (VACLs): VACLs allow network administrators to filter traffic based on VLAN assignments. This feature allows administrators to prevent traffic from one VLAN from reaching another VLAN.
Private VLANs (PVLANs): PVLANs allow network administrators to isolate devices within a VLAN. This feature helps prevent unauthorized communication between devices within the same VLAN.
Dynamic ARP Inspection (DAI): DAI prevents ARP (Address Resolution Protocol) spoofing attacks by verifying the ARP packets received on the switch. DAI checks the source MAC address and IP address of the ARP packet and discards it if the information is invalid.
DHCP Snooping: DHCP snooping verifies DHCP messages received on the switch to prevent rogue DHCP servers from assigning IP addresses to devices. The switch only allows DHCP messages from authorized DHCP servers.
Port-Based Authentication: This feature allows network administrators to authenticate devices connecting to a port on a switch. The switch only allows access to the network after the device has been authenticated.
These Layer 2 security features in IOS devices provide network administrators with tools to secure their networks and prevent unauthorized access. By implementing these features, administrators can mitigate the risk of security breaches and ensure the confidentiality, integrity, and availability of their network
Check out complete article at: Security Fundamentals: Contents (Tutorialsweb.cm)
Tutorialsweb.com, a leading site for professional articles, offering JNCIA cram notes for free. Tutorialsweb.com revised their JNCIA Exam study guide to reflect the most recent exam objectives of JNCIA-Junos (JN0-104) certification exam.
JNCIA-Junos (JN0-104) Exam Objectives
1. Networking Fundamentals
2. Junos OS Fundamentals
3. User Interfaces
4. Configuration Basics
5. Operational Monitoring and Maintenance
6. Routing Fundamentals
7. Routing Policy and Firewall Filters
About Tutorialsweb.com: The website offers several articles on certifications, surface mount technology, software programming, and computer networking.
Filedownload.net a software download website offers CCNPENARSI Practice Test. The practice test consists of more than 200 questions, covering topics from the latest objectives of the CCNP ENARSI 300-410 certification exam.
About CCNP Enterprise Certification: CCNP Enterprise certification requires you to pass two exams a core exam and an enterprise concentration exam of your choice. A Specialist certification is given for every exam in the CCNP Enterprise program.
CCNP (Implementing and Operating Cisco Enterprise Network Core Technologies) 350-401 ENCOR : is the core exam that focuses on candidates knowledge on enterprise infrastructure including dual-stack (IPv4 and IPv6) architecture, virtualization, infrastructure, network assurance, security, and automation.
CCNP (Implementing Cisco Enterprise Advanced Routing and Services) 300-410 ENARSI is the enterprise concentration exam that focuses on candidates knowledge on installing, configuring, operating, and troubleshooting an enterprise network.
Swregn.com a software registration and download site updated its A+ Core 1 (220-1101) Exam Simulators for Android/iPhone/windows versions. Exam simulator consists of 350+ questions which covers latest 220-1101 (A+ Core 1) exam objectives.
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Exam Information
A+ Core certification requires two tests to be passed: the A+ Core 1 (220-1101) exam and A+ Core 2 (220-1102) exam. Both of these tests must be passed in order to receive A+ certification .
