a. If a gateway simply passes requests and responsesunmodified to either the client or the server, which certainly slows theoverall response time,

a.      If a gateway simply passes requests and responsesunmodified to either the client or the server, which certainly slows theoverall response time, why would anyone use it? Explain.

b.     Suppose Billy from Research developed akiller app and Thomas from upper management wants all traffic, includingBilly’s new killer app, to go through a proxy for security purposes.  How do you as the security administratorsupport Billy’s new killer app?

c.      In terms of policy (deny everything unlessexplicitly allowed vs. allow everything unless explicitly denied), how dosecurity administrators approach packet filtering and content-filtering?  Why approach content-filtering differentlythan packet-filtering?

d.     There are several filtering approachesavailable including: URL, IP address, TCP port, Text-based, image-analysis, andvirus filtering.  Which approaches aresupported by iptables, Squid, Dansguardian? Please order the approaches based on performance.

a. A gateway is a network point that acts as an entrance to another network. There is securitywhen using a gateway. It slows the response time between the client and the server. Enablesload...