merkow ppt 12-JRM
merkow ppt 12-JRM
merkow ppt 12-JRM
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Firewalls cont.<br />
� Application-Level Gateway Firewall<br />
� Allows the network administrator to implement<br />
stricter security policies than packet-filtering<br />
routers can manage<br />
� Requires special-purpose code (a proxy service)<br />
for each desired application<br />
� The proxy code can be configured to support only<br />
acceptable features of an application<br />
� Users are permitted access to the proxy services,<br />
but may not log in to the application-level gateway<br />
itself<br />
© Pearson Education Information Security:<br />
Principles and Practices 20