Did you ever receive a suspicious email you wanted to track down to know more about the sender? While modern email services do come with a lot of built-in security features, keeping a check on the ...

Internet Protocol (IP) spoofing is a type of malicious attack where the threat actor hides the true source of IP packets to make it difficult to know where they came from. The attacker creates packets ...

I had an assignment at university that dealt with the size of a message after being sent through two different types of networks with different packet sizes and network headers. That's all we were ...

Introduced as part of HTTP v1.1, the host HTTP header allows multiple websites to be run on a single IP address using TCP port 80 only. Prior to this, each website required its own unique IP address, ...

If you use Office 365's webmail interface to prevent email recipients from seeing your local IP address, you are out of luck. When sending email through Office 365, your local IP address will be ...

Not the end of the world, but I'd sooner Joe Bloggs now know the private IP range we use internally. Looking at your setup I think you'd have do your NAT translation before it gets to the mailserver, ...

The purpose of the network layer is to help route messages between different local networks. Central to this layer is the concept of exclusive network addresses, where every terminal connected to the ...