opening holes in your network through the installation of unwanted 

software and ActiveX controls which frequently accompany visited 

adult sites.  

  Less bandwidth is consumed on non work related browsing.  

  Less demand for local storage space   Less physical storage 

space is required locally to host a detailed and up to date content 

filter database which is continuously increasing in size. GFI 

WebMonitor will store only the blocked URLs which were 

requested by the company's internal users; as opposed to the 

Yahoo! SafeSearch

TM

 filter database which includes the URLs of 

all sites that were accessed by a multitude of users around the 

world. 

Web Traffic Scanning 

Figure 3   Web Traffic Scanning 

GFI WebMonitor can optionally perform Web Traffic Scanning. During 

Web Traffic Scanning, downloaded objects are checked for viruses, 

spyware and Trojans using the supported virus scanning engines. The 

paid version of GFI WebMonitor comes enabled with Norman and 

BitDefender free for the first year. Kaspersky can be added on for an 

additional charge. During Web Traffic Scanning, the virus scanner(s) 

inspect all HTTP and FTP (only FTP passing via HTTP proxy server) 

traffic going through the monitored ISA Server. Web Traffic Scanning 

blocks all infected files before reaching the client.  

Dangerous files (filetypes) such as Trojan downloader programs often 

attempt to penetrate a system masked as innocuous files. During Web 

Traffic Scanning, GFI WebMonitor uses its built in file signature 

scanner to analyze the signatures of HTTP/FTP files. Filetype 

signatures are bytes which define the true type and content of a file. 

GFI WebMonitor will immediately block dangerous filetypes before 

reaching the client. 

For more information on filetype signatures visit: 

http://www.garykessler.net/library/file_sigs.html

. 

6 

 Introduction 

GFI WebMonitor 3