What are Extended ACLs? Extended Access Control Lists (ACLs) are an advanced security feature used in network devices like routers and switches to provide a finer level of control over network traffic than standard ACLs. While standard ACLs filter traffic based solely on the source IP address, extended ACLs can filter based on multiple criteria, including: Source and… Read More »
What Is Dynamic Trunking Protocol (DTP) The Dynamic Trunking Protocol (DTP) is a Cisco proprietary protocol that is automatically enabled on Catalyst 2960 and Catalyst 3560 Series switches. DTP is used to negotiate to form a trunk link between two or more Cisco devices before actually forming the trunk connection. The main benefit of DTP is to increase… Read More »
Hubs, Switches, Routers, and Access Points are all used to connect computers on a network, but each of them has different capabilities. What Is a Hub? Hubs are used to connect computers on a network to communicate with each other. Each computer plugs into the hub with a cable, and information sent from one computer to another passes… Read More »
What Is DHCPv6 Autoconfiguration? DHCPv6 is a network protocol that works pretty much the same as DHCP in IPv4. It is used to assign IP addresses and prefixes to IPv6 hosts on a network. This is also known as a stateful autoconfiguration. How DHCPv6 Works. DHCPv6 works in two ways; Stateful and Stateless Address Autoconfiguration (SLAAC). Stateless Address Autoconfiguration (SLAAC) SLACC requires no… Read More »
What Is DHCP Snooping? The Dynamic Host Configuration Protocol (DHCP) allocates IP addresses dynamically, it leases addresses to connected devices and the addresses can be reused when no longer needed. All connected Hosts and end devices that require IP addresses obtained through DHCP must communicate with a DHCP server across the LAN. DHCP snooping acts like a firewall… Read More »
