SSCP · Question #701
What is a limitation of TCP Wrappers?
The correct answer is A. It cannot control access to running UDP services. TCP Wrappers can control when a UDP server starts but has little control afterwards because UDP packets can be sent randomly. The following answers are incorrect: It stops packets before they reach the application layer, thus confusing some proxy servers. Is incorrect because…
Question
Options
- AIt cannot control access to running UDP services.
- BIt stops packets before they reach the application layer, thus confusing some proxy servers.
- CThe hosts. access control system requires a complicated directory tree.
- DThey are too expensive.
How the community answered
(31 responses)- A94% (29)
- B3% (1)
- C3% (1)
Explanation
TCP Wrappers can control when a UDP server starts but has little control afterwards because UDP packets can be sent randomly. The following answers are incorrect: It stops packets before they reach the application layer, thus confusing some proxy servers. Is incorrect because the TCP Wrapper acts as an ACL restricting packets so would not confuse a proxy server because the packets would not arrive and would not be a limitation. The hosts. access control system requires a complicated directory tree. Is incorrect because a simple directory tree is involved. They are too expensive. Is incorrect because TCP Wrapper is considered open source with a BSD licensing scheme.
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