Table of Contents
How does the router keep track of what replies to where?
Most home routers use a special-case of NAT called PAT. When the packet goes out from your internal machine, the source address is rewritten as you are aware. The source port is also changed, usually to a high number, and the router keeps an address translation table.
How does a router know which computer sends data?
When a device initiates a TCP/IP session, it generates a TCP or UDP source port number to uniquely identify the session. When the router receives this packet it uses that source port number to uniquely identify the translation.
How does router identify hosts?
Routers identify devices by their physical address, known as the MAC address (media access control address), which is unique. Based on the MAC address, the DHCP service assigns each device to an IP address, based on the list of free and taken IP addresses range it has.
What information is stored on a router?
What Information Is Stored In A Wi-Fi Router? Information stored in a Wi-Fi router’s memory includes its operating system, routing tables, PPPoE credentials, admin passwords, and configuration files.
What is necessary for a router to know where to send a message next?
When a router receives a packet, the router checks its routing table to determine if the destination address is for a system on one of it’s attached networks or if the message must be forwarded through another router. It then sends the message to the next system in the path to the destination.
Can router be a host?
It is up to you to decide to which devices you assign those available host addresses and if you assign one to a router it can’t be assigned to a laptop, server or your fridge. So yes, the ip-address for your router counts as a host.
Do routers create frames?
If the connection between the two routers is an IEEE protocol, then, yes, you will see frames with MAC addresses. If it is frame relay, you will see frames with DLCIs; with ATM, you will see frames with VPI/VCI; etc.
Is personal information stored on a router?
Routers don’t store any personal information, and your ISP has already conveniently stored all of that for you.