History of the Internet - During the 1960s, the U.S. Department of Defense’s Advanced Research Projects Agency (ARPA, later called DARPA) began an experimental wide area network (WAN) that spanned the United States (more...)
Internet Protocol - The Internet Protocol (IP) part of the TCP/IP suite is a four-layer model. IP is designed to interconnect networks to form an Internet to pass data back and forth. IP contains addressing and contro (more...)
Transmission Control Protocol - IP has many weaknesses, one of which is unreliable packet delivery—packets may be dropped due to transmission errors, bad routes, and/or throughput degradation. The Transmission Control Proto (more...)
Internet Control Message Protocol ICMP - The Internet Control Message Protocol (ICMP) delivers message packets, reporting errors and other pertinent information to the sending station or source. Hosts and infrastructure equipment use this (more...)
THE WEB APPLICATION ARCHITECTURE - Web application architectures most closely approximate the centralized model of computing, with many distributed “thin” clients that typically perform little more than data presentati (more...)
DNS risks and security - DNS is the Domain Name System. It's a UDP- and TCP-based protocol that listens on port 53. TCP connections are commonly used for zone transfers.
The DNS matches IP addresses to hostname (more...)
FTP with IPv6 - FTP has been designed to work over IPv4 supporting 32-bit addresses. With RFC 2428, "FTP Extensions for IPv6 and NATs," a specification was made that allows FTP to work over IPv4 and IPv6. Duri (more...)
DNS in the IPv6 world - DNS is used in the IPv4 world to do name-to-address mappings and vice versa. This is not changing in the IPv6 world. The need for DNS is actually much greater because of the length of IPv6 addr (more...)
RADIUS Vulnerabilities - RADIUS is known to have a set of weaknesses that are either presented in the protocol itself or caused by poor client implementation. The stateless UDP protocol itself allows easier packet forg (more...)
DHCP with IPv6 - DHCP is widely used to configure hosts with their IPv4 addresses and additional information. If you have an IPv6 network, you do not need DHCP to configure your hosts with address information. (more...)
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