Reference Guide
iii
Contents
CHAPTER 1
Internet Protocol Reference
........................................................................1
Internet Protocol Header ...............................................................................2
IP header number list
..................................................................................3
Internet Protocol Options ..............................................................................6
Transfer Protocols ........................................................................................6
UDP
.........................................................................................................6
TCP
..........................................................................................................7
ICMP
........................................................................................................7
Other protocols
..........................................................................................7
Standard Ports and Random Ports.................................................................8
CHAPTER 2
MIME Content Types
....................................................................................9
CHAPTER 3
Services and Ports
.....................................................................................21
Ports Used by WSM and Fireware ................................................................21
Ports Used by Microsoft Products ................................................................22
Well-Known Services List ............................................................................23
CHAPTER 4
WebBlocker Content
..................................................................................31
Searching for Blocked Sites ........................................................................31
WebBlocker Categories ...............................................................................32