IoT - Trend or Threat IoT (Internet of Things) is a group of interconnected devices which perform some action. IoT may be a group of CCTVs, Home Sensors, Security Gate sensors, Temperature and humidity sensors, etc. interconnected to a server which can generate reports for events and alert the owner or perform some action based on some threshold value. Ex. Stop cooling once temperature reaches 22 Degree Celsius. Or Open the main entrance gate once the owner's vehicle reaches home, etc. The Internet of Things bring a great help when they perform these actions, however, as easy the technology becomes, so difficult is to protect it from prying eyes. Good Part: Inter connected devices performs tasks in a much better and controlled way Provides information from remote areas Gives better control of what is happening at a Smart Home, Smart City, etc Bad part: Many vendors manufacture devices with little or no security. They develop these things for functionality and sel...
Nmap - Network Mapper Nmap is a very important tool in network discovery. It is the de-facto tool for footprinting networks. It is capable of finding alive hosts, access points, finger-printing operating systems, and verifying running or available services. It also has important IDS evasion capabilities. Seven generic scan types for port scanning: TCP Connect Runs through a full connection (three-way handshake) on all ports. Easiest to detect, but possibly the most reliable. Open ports will respond with a SYN/ACK, closed ports with a RST/ACK. SYN Known as a “half-open scan.” Only SYN packets are sent to ports (no completion of the three-way handshake ever takes place). Open ports will respond with a SYN/ACK, closed ports with a RST/ACK. FIN scans run the communications setup in reverse, sending a packet with the FIN flag set. Closed ports will respond with RST, whereas open ports won’t respond at all. ...