In any network, a VLAN is used to segment the network. Users in a particular VLAN will not have access to resources in other VLANs. For host devices in one VLAN to be able to communicate with hosts on another VLAN, a router will be needed to forward the traffic from one VLAN to another.
Router on a Stick Configuration in Cisco Packet Tracer Read More »
In any network, a VLAN is used to segment the network. Users in a particular VLAN will not have access to resources in other VLANs. Normally, devices in the same VLAN can communicate with each other without the traffic having to traverse the router. However, for packet to flow from a host in one VLAN
How to Configure Inter VLAN Routing on Cisco Layer 3 Switch Read More »
Link Layer Discovery Protocol (LLDP) is an industry-standard protocol (IEEE 802.1AB) implemented by various vendors. Unlike Cisco’s proprietary CDP, LLDP is typically disabled on Cisco devices by default and requires manual enabling. It’s possible for a device to run both CDP and LLDP simultaneously, although usually, only one is utilized. LLDP messages are periodically sent
How to Configure LLDP on Cisco Devices Read More »
CDP is a Cisco proprietary Layer 2 discovery protocol used to share information with and discover information about neighboring devices. The shared information includes hostname, IP address, device type, etc. Because this protocol shares information about devices in the network, it is considered a security risk and is often not used. CDP is enabled on
How to Configure And Verify CDP in Cisco Devices Read More »
Dynamic Host Configuration Protocol (DHCP) is a protocol used to automatically assign IP addresses to end-user devices in a network. Apart from using a dedicated server for DHCP service in a network, a Cisco router can also be used as a DHCP server. It just needs an extra bit of configuration. In this post, I
How to Configure DHCP Server on Cisco Router in Packet Tracer Read More »
In this article, we will explore how to configure PAT on a cisco router. Network address translation (NAT) is an algorithm used in translating private IP address into a public IP address for connectivity over the internet. There are two primary types of IP addresses: IPv6 and IPv4. Initially, IPv4 was the predominant addressing scheme.
How To Configure PAT on Cisco Router in Packet Tracer Read More »
In any network, various VLANs cater to different departments within an organization. For instance, one VLAN might serve the network engineering team, while another VLAN could be dedicated to security engineering Team. These VLANs are important in segmenting the network. It ensures that access to resources is restricted within each VLAN. Even though VLANs do
VLAN Hopping Attacks Mitigation Read More »
For a host to obtain an IP address from a DHCP server, it sends a DHCP request to the DHCP server on the network, and the server will reply by leasing out an IP address from the pool of available addresses to the host. DHCP clients connected to a switch are expected to transmit only
How to Configure DHCP Snooping In Cisco Packet Tracer Read More »
To make forwarding decisions, switches store the MAC address associated with any interface it used to receive frames in the MAC Address table. Next time, when a frame destined to that MAC address comes in on the switch, the switch looks up the MAC address table and uses the interface associated with that MAC address
Configuring Port Security to Prevent MAC Address Table Attack Read More »
In any network setup, ensuring secure access to devices like routers and switches is paramount to prevent potential security vulnerabilities. Failure to secure access could leave networks vulnerable to unauthorized access and malicious attacks. There are two primary methods to secure access to network devices. First, we can utilize the device’s local database to store
How to Configure AAA Server in Packet Tracer Read More »
