What are the benefits of using dynamic port security over static port security? (2024)

FAQs

What are the benefits of using dynamic port security over static port security? ›

Static port security requires you to manually specify the MAC addresses of the devices that are allowed to connect to a port, while dynamic port security automatically learns and stores the MAC addresses of the devices that connect to a port.

Port security can provide several benefits for network security and performance, such as: Preventing the ability of unauthorized devices to access protected network information and resources. Keeping malicious software and viruses out of the network by blocking access from unapproved devices.

The dynamic port numbers (also known as the private port numbers) are the port numbers that are available for use by any application to use in communicating with any other application, using the internet's Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP).

You can configure the port for one of three violation modes: protect, restrict, or shutdown. See the "Configuring Port Security" section. To ensure that an attached device has the full bandwidth of the port, set the maximum number of addresses to one and configure the MAC address of the attached device.

Restrict – When a violation occurs in this mode, the switchport will permit traffic from known MAC addresses to continue sending traffic while dropping traffic from unknown MAC addresses. However, unlike the protect violation type, a message is also sent indicating that a violation has occurred.

Ports serve as the primary entry and exit points for international trade and act as key connection points for regions with diverse economies and markets. The strategic positioning of many ports along major international trade routes makes them essential hubs for transshipment.

Benefits of Port Digitalization

Improved efficiency: Digital technologies can help to automate and streamline operations, reducing the risk of errors and improving efficiency. For example, digital systems can be used to track cargo, schedule ships, and optimize the flow of goods through the port.

Static port security requires you to manually specify the MAC addresses of the devices that are allowed to connect to a port, while dynamic port security automatically learns and stores the MAC addresses of the devices that connect to a port.

Static ports are fixed and pre-assigned by the Internet Assigned Numbers Authority (IANA) to specific services or applications, such as HTTP (port 80) or FTP (port 21). Dynamic ports, on the other hand, are assigned on an as-needed basis by the operating system.

Static Port-channels are statically configured. To configure static, use mode 'ON'. Dynamic Port-channels are dynamically configured using Link Aggregation Control Protocol (LACP). Dynamic port channels can be active or passive.

What is Cisco port security? ›

Port Security is a feature that enhances the security of Cisco switches by controlling access to Ethernet ports based on the MAC addresses of connected devices. Port Security allows network administrators to associate only specific MAC addresses or set a maximum number of MAC addresses with each switch port.

Cisco's Port Security feature can protect these in-use ports by mitigating attacks against the network and preventing unauthorized moves, adds, and changes by limiting the number of unique MAC addresses that can use a given port. Port Security is already included in IOS, so there's no additional cost.

Port 443 is the default port for HTTPS data, the secure version of HTTP, Port 22 is used for Secure Shell data, the text-based console used primarily with Linux/Unix systems and network devices, Port 3389 is assigned for RDP (Remote Desktop Protocol), primarily used for accessing the console of Windows-based systems.

Prevents Thieves from Stealing Goods

Since shipping containers cannot be manned at all times, port security is essential for keeping goods safe from thieves. Some areas of ports are inaccessible for human patrol, but other security measures can protect these items from thieves.

Sometimes the goal is to protect the vessels themselves, as well as their passengers and cargo. For example, a port is a very busy place, and a potential criminal could try to take advantage of the chaos and steal some of the cargo off of a ship or plane.

Port Security Goals and Principles

In developing a security program, the emphasis should be placed on deterring, preventing, detecting, and reducing the losses attributed to criminal activities. In order to do so, port security operations must be proactive rather than merely reactive.