Port Security of Access Layer Switches
Port Security is a layer 2 access control feature that allows network administrators to control which devices can connect to a specific switch port. It does this by restricting the MAC addresses allowed on that port and defining how the switch reacts to unauthorized devices. Let's consider the following example. Imagine an open office space with desks everywhere. What stops someone with access to the office from unplugging a device at an empty desk and plugging their rogue device into the wall jack, as shown in the diagram?Catalyst Integrated Security Features (CISF) includes private VLANs, port security, DHCP snooping, IPSource Guard, secure Address Resolution Protocol (ARP) detection, and dynamic ARP inspection. [pdf]FAQs about Port Security of Access Layer Switches
How to Configure Port Security
To configure port security we need to access the command prompt of switch. Click Switch and click CLI and press Enter Key.Port can be secure from i...
Switchport Port-Security Violation
We need to specify what action; it should take in security violation. Three possible modes are available:Protect: - This mode will only work with s...
Switchport Port Security Example
In our topology PC0 is connected with F0/1 port of switch. Enter following commands to secure F0/1 port.Following table explains above commands in...
Switchport Port Security Testing
In our topology we have one additional PC. Assume that, this is the cracker's PC. To gain unauthorized access in network he unplugged the Ethernet...
The cheapest network security equipment
With packages starting as low as $250, we found that SimpliSafe is the most affordable option without sacrificing quality. Our team logged over 10,000 hours testing and researching more than 60 home security systems. We then selected 12 of the most affordable. Blink Outdoor 4 – Wireless smart security camera, two-year battery life, 1080p HD day and infrared night live view, two-way talk. The Forbes Home team is committed to bringing you. Embarking on the quest to find the ideal home office, home lab or small business firewall device is akin to navigating a jungle, but let's narrow it down by setting the budget to under $300 USD. Picture this: your network is already configured and has been working without issue for a while now. Also, I'll show you why you may need a home. [pdf]
How to transmit surveillance data over fiber optic cable distances
For IP surveillance, shielded Cat5e or Cat6 cables with proper twist and shielding configurations can reliably transmit digital video over long distances when combined with PoE (Power over Ethernet) technology. Fiber optic transmission distance varies based on fiber type, environmental conditions, and equipment selection. This guide covers fiber distance limitations, influencing factors, application-based selection, and technologies that extend optical. Fiber optic cable can be run anywhere from 300 meters up to 80 kilometers (roughly 50 miles) depending on the cable type, transceiver used, and network standard. Attenuation is the progressive loss of signal strength that occurs as light travels through the fiber. The greater the distance, the greater. [pdf]