Saturday, February 26, 2011
Sunday, February 13, 2011
TCP is a very important protocol in the Internet. More than half of the traffic in Internet uses TCP. When it comes to reliable communications, TCP plays a major role, let it be logging into Facebook or opening a website like Wikipedia.com the underlying protocol which takes care of these reliable connections is TCP. TCP’s dominance over internet has its advantages and disadvantages from security point of view. The architecture of TCP/IP protocol suit doesn’t have any security features in built, what it has are algorithms for protocol timers, error correction, flow control, buffering, but there is nothing in code for its security, as Internet evolved the techniques to use it in unethical ways also evolved.
Monday, February 7, 2011
Friday, February 4, 2011
Definition from Wikipedia:
An intrusion detection system (IDS) is a device or software application that monitors network and/or system activities for malicious activities or policy violations and produces reports to a Management Station.
My own words:
Basically an IDS is a dedicated box tapped into a computer network which sniffs the traffic (raw packets) to check for anomalies/intrusions/virus/attacks.