A Microsoft Internet Security and Acceleration (ISA) Server 2000 VPN operating over the Internet requires X.509 server certificates for authentication. You need a certificate for each ISA Server and client. To...
Network Address Translation (NAT) is designed to decrease a private network's hunger for scarce public IP addresses. A NAT device takes a packet’s originating private IP address, converts that address into the NAT...
Two primary types of IP Security (IPSec) protocols exist: IP Type 50 Encapsulating Security Payload (ESP) and IP Type 51 Authentication Header (AH). ESP provides authentication and encryption; AH provides...
Most programs use either UDP or TCP for communications. TCP is the more sophisticated of the two protocols, providing reliable, connection-oriented delivery. First, TCP ensures that the receiving computer is ready to...
Reading Netstat's five-column output is something of an art. First, look at the Local Address column. The results that appear there will typically be 0.0.0.0 or 127.0.0.1, or will show the IP address of one of your...