Distinguish between packet-filtering firewalls and application-level gateways.

What will be an ideal response?


A packet-filtering firewall examines all data sent from outside a local area network and automatically rejects the data
packets that have local area network addresses. For example, if a hacker from outside obtains an address from a computer
inside the network and tries to sneak a harmful data packet through the firewall, the packet-filtering firewall will reject the
data packet since it originated outside the network but had an internal address. An application-level gateway scans the actual
data. If the message is deemed safe, it is allowed through the firewall.

Computer Science & Information Technology

You might also like to view...

For the attribute set R=BCEGVWY, let the MVDs be:

R = WBCY ./ YEVG R =WBCE ./ WBYVG R =WBY ./ CYEVG Find a lossless decomposition into 4NF. Is it unique?

Computer Science & Information Technology

The _____ Macro workbook is a hidden workbook opened whenever you start Excel, making its macros available anytime you use Excel.

A. Universal B. Personal C. Microsoft D. XP

Computer Science & Information Technology

You can make a layer active by clicking its name on the _____ panel.

A. History B. Layers C. Library D. Thumbnail

Computer Science & Information Technology

Conversion specifier p __________.

a) displays a pointer value with -> notation b) displays a pointer value in hexadecimal notation c) displays a pointer value in decimal notation d) displays a pointer value in an implementation-defined manner.

Computer Science & Information Technology