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Use this tag for questions about discovering the IP addresses, mac-addresses, vlans, or the physical topology of a network.

3 votes
Accepted

tracert command return Request timed out

Extract from Microsoft Support How to Use TRACERT to Troubleshoot TCP/IP Problems in Windows The TRACERT diagnostic utility determines the route to a destination by sending Internet Control Mess …
JFL's user avatar
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3 votes
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Find all printer on the network

Most of (any?) network printers can be joined on TCP port 9100, so you can use NMAP (or other suitable software) to scan for all hosts with this port opened on all your networks.
JFL's user avatar
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2 votes

How can I discover Apple TV's on my network?

Apple Bonjour protocol use Multicast DNS, which has been normalized in RFC6762 and RFC6763. It uses multicast IPv4 address 224.0.0.251 or IPv6 address FF02::FB An bonjour enabled device will announce …
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9 votes
Accepted

Why traceroute is still Used?

Traceroute doesn't give inexact information, it performs tests in a specific way and give some results based on the response it receives (or do not receive). You have to know how to interpret the res …
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6 votes
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What is persistent connection and session

First a word about: I understand word persistent as following : no one else can occupy wire at the time of persistent connection. So this connection is only one-to-one. But this is not right. …
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