A previous post mentions how to send raw packets using winsock api on windows xp. Winpcap is a packet driver useful for packet capturing and sending raw packets on the windows platform.
Raw means we have to cook the whole packet ourselves. A TCP packet for example consists of:
1. Ethernet header
2. IP header
3. TCP header
4. The [...]
Port Scanning searches for open ports on a remote system. The basic logic for a portscanner would be to connect to the port we want to check. If the socket gives a valid connection without any error then the port is open , closed otherwise (or inaccessible, or filtered).
The Huawei MT882 ADSL Modem that you might have received with your BSNL Broadband connection can be used to connect 2 computers to the internet simultaneously since it is a router. It has a USB interface and an Ethernet interface both of which can be simultaneously used but with a few setting changes.
