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For questions about Internet Protocol (IP), an OSI layer-3 network protocol. There are two current IP versions in use: IPv4 and IPv6.

2 votes
Accepted

Is TCP congestion control vulnerable to malicious clients?

Does it depend on the TCP sender not being malicious? Yes it does. Your understanding is spot on. It could steal bandwidth from other clients couldn't it? Yes it could. It would be a a form …
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0 votes

Finding all used IP addresses within a LAN without assigning an IP address to your NIC

Mario, you mentioned: Taking under consideration that some nodes are on different IP subnets. … If you have a large amount of VLANs and the above solution would be too time consuming, you could either: Install Angry IP (or any other IP scanner) on an existing server which has an IP address. …
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20 votes

How do you calculate the prefix, network, subnet, and host numbers?

The answer above hits the nail on the head perfectly. However, when I first started out, it took me a few different examples from a couple of sources for it to really hit home. Therefore, if you're in …
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1 vote
Accepted

Real IP phone in GNS3 Problem

I've posted about this on my blog a few times. The short of it is that you bind your PC's network card to a cloud object in GNS3. This connects your virtual (GNS3) network to your physical network. If …
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22 votes
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What is Link-local addressing?

A PC automatically acquires a 169.254.x.x/16 address if it does not receive an IP address from a DHCP server. …
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