Security features in PPPshar (for Advanced users only)
Firewall Options - protection against attacks - must for cable modem, adsl users.

Allow/Deny access to specific IP addresses

PPPshar Pro can allow or deny access to specific IP addresses. You can also use this feature to secure the pppshar/gateway machine and your entire network against any attack from Internet, especially when you are using cable modem, ADSL or a dedicated connection. By default this feature is disabled. Here is an example of how PPPshar can allow access only to specific IP address or range of addresses. Changes should be made in secure.ini file (PPPsharPro-->Security). Note: this option is for advanced users only.

Typically, if you want to allow access to a specific set of computers of addresses say

192.168.0.2
192.168.0.3
192.168.0.4

the secure.ini file should be:

#allow
192.168.0.2
192.168.0.3
192.168.0.4

#deny

#useallow
true

Note: The line below #useallow should read true.

On the other hand, if you want to deny access to machines 192.168.0.2,192.168.0.3 and 192.168.0.4, and allow all others, the secure.ini file should be:

#allow

#deny
192.168.0.2
192.168.0.3
192.168.0.4

#useallow
false

Note: The line below #useallow should read false. You may also specify an entire range of addresses using wild cards like 192.168.0.*

Controlling Access based on File Types (new in v1.7) Use this with Caution

Deny Access to Specified file Types: Suppose you want to prevent users from accessing/downloading *.exe and *.zip files from the client machines, you should make the following changes to "secure.ini".(PPPsharPro-->Security)

 #denyFiles
*.exe
*.zip

 #useAllowFiles
false

You can specify any number of file types in a similar way.

Allow Access to Specified file Types and Deny everything else: Suppose you want users to access only .html, .htm and .txt  files, you should make the following changes to "secure.ini". (PPPsharPro-->Security)

 #allowFiles
*.html
*.htm
*.txt

 #useAllowFiles
true