Destination:

The Destination of route entry.

Gateway:

The Gateway of route entry.

Flags:

The Flags of route entry. The Flags describe certain characteristics of the

 

route.

Logical Interface:

The logical interface of route entry.

Physical

The physical interface of route entry.

Interface:

 

Metric

The Metric of route entry.

3.4 Firewall

3.4.1 Anti ARP Spoofing

ARP (Address Resolution Protocol) is used to analyze and map IP addresses to the corresponding MAC addresses so that packets can be delivered to their destinations correctly.

ARP functions to translate the IP address into the corresponding MAC address and maintain an ARP Table, where the latest used IP address-to-MAC address mapping entries are stored. ARP protocol can facilitate the Hosts in the same network segment to communicate with one another or access to external network via Gateway. However, since ARP protocol is implemented with the premise that all the Hosts and Gateways are trusted, there are high security risks during ARP Implementation Procedure in the actual complex network.

The attacker may send the ARP spoofing packets with false IP address-to-MAC address mapping entries, and then the device will automatically update the ARP table after receiving wrong ARP packets, which results in a breakdown of the normal communication. Thus, ARP defense technology is generated to prevent the network from this kind of attack.

3.4.1.1IP-MAC Binding

IP-MAC Binding functions to bind the IP address, MAC address of the host together and only allows the Hosts matching the bound entries to access the network.

Choose the menu Firewall→Anti ARP Spoofing→IP-MAC Binding to load the following page.

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TP-Link TL-ER6120 manual Firewall, Anti ARP Spoofing, IP-MAC Binding

TL-ER6120 specifications

The TP-Link TL-ER6120 is a robust and versatile gigabit router designed for small to medium-sized businesses, offering high-performance routing capabilities while ensuring secure network management. This device stands out for its user-friendly configuration, affordability, and rich feature set tailored for business needs.

One of the key features of the TL-ER6120 is its advanced routing capabilities. It supports load balancing and failover, ensuring reliable internet connectivity by distributing traffic across multiple WAN ports. This helps to maintain optimal performance even during high-traffic periods. The router can accommodate up to three WAN ports, providing flexibility in terms of connection options and redundancy.

Security is paramount in any business network, and the TL-ER6120 does not disappoint. It includes a robust firewall with stateful packet inspection, preventing unauthorized access and safeguarding sensitive data. The router also supports various VPN protocols, including PPTP, L2TP, and IPSec, enabling secure remote access for employees working from remote locations. This feature is particularly beneficial as remote work becomes more prevalent.

In addition to its security features, the TL-ER6120 offers support for VLAN configuration, allowing businesses to segment their networks for better performance and security. Dynamic Routing Protocols such as RIP v1/v2, and static routing are also supported, ensuring seamless data exchange across different network segments.

Another significant aspect of the TL-ER6120 is its Quality of Service (QoS) functionality. This feature enables users to prioritize bandwidth for critical applications, ensuring that services like VoIP and video conferencing maintain optimal performance. By managing the flow of data, businesses can enhance their operational efficiency.

The TL-ER6120 is equipped with several advanced management features, including a web-based user interface that simplifies network configuration and monitoring. Users can easily manage their network settings, view traffic statistics, and troubleshoot issues without advanced technical knowledge.

In conclusion, the TP-Link TL-ER6120 is an excellent choice for businesses seeking a reliable, feature-rich router. Its combination of security, performance, and ease of use makes it an ideal solution for managing business networks efficiently. Whether for load balancing, secure remote access, or network segmentation, the TL-ER6120 meets diverse business needs with sophistication and reliability.