LAN Port Protocol 
The Network DNA
JULY 16, 2024
CCNA: Address Resolution Protocol (ARP) In this article, we will talk about ARP that maps the layer 3 address to the layer 2 MAC address. This is similar to Address Resolution Protocol, which maps layer 3 IP addresses to the layer MAC addresses. CCNA RnS Article #28: Why Spanning Tree Protocol? IP address.
The Network DNA
JUNE 19, 2024
CCNA: TCP Sequence & Port Number This article can be read as the second part of the previous article CCNA: 3-Way Handshake where we discussed what makes TCP a reliable protocol for transmitting information. Lets discuss the TCP SEQ and Port numbers in this article. These applications are identified using the port numbers.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
The Network DNA
JUNE 24, 2024
This table is populated automatically when a switch receives a frame on a port. As a frame is received on a port, its source MAC address is noted. The switch receives the frame from PC-1 that contains the MAC address 80::01 on port 1. Port 1 is configured as a member of VLAN-11. Then PC-1 wants to communicate with PC-2.
The Network DNA
JUNE 17, 2024
CCNA: TCP 3-Way Handshake In this article, lets take a look at TCP three-way handshake and other useful information that makes TCP a reliable communication protocol. Lets say HTTP uses port 80 to identify the application at PC-2, PC-1 chooses Port 80 as the destination port and selects a random port 36000 as the source port.
CATO Networks
SEPTEMBER 11, 2023
With Catos LAN Firewall policy, you can configure rules for allowing or blocking LAN traffic directly on the Socket, without sending traffic to the POP. Figure 3 – LAN Firewall Policy When to use a LAN firewall policy There are several scenarios in which it could make sense to apply a LAN firewall policy.
CATO Networks
APRIL 6, 2023
Rather, these firewalls are also used for securing WAN access, datacenter LAN segmentation and ensuring reliability and high availability to network traffic. Secure LAN Access SSE should secure VLAN traffic using access control and threat prevention engines. This must be done at the nearest SSE PoP to avoid latency.
Kentik
JANUARY 13, 2021
Send these pings using the Internet Control Message Protocol (ICMP) or TCP to one or any of the devices you believe to be involved. In some cases if ICMP is filtered, you can usually switch to TCP (Transmission Control Protocol) and use tcping, telnet, or another TCP-based method to check for reachability. Get the Path with Traceroute.
Expert insights. Personalized for you.
98 
Let's personalize your content