防火墙和代理服务器的区别

1. 防火墙：
防火墙是防止未经授权访问或来自专用网络的软件程序。里面的所有数据包进入或丢弃网络都通过防火墙，并在检查防火墙是否允许之后。所有流量都必须通过防火墙，只有经过授权的流量才能通过。它是一个位于两个网络之间的系统，它在这些网络之间实施访问控制策略。它工作在OSI模型的网络层，在传输前使用加密技术对数据进行加密。

2.代理服务器：
代理服务器是一种服务器，充当任何设备与互联网其余部分之间的网关或中介。代理接受并转发连接请求，然后为这些请求返回数据。它使用匿名网络ID而不是客户端的实际IP地址(意味着它隐藏了客户端的IP地址)，因此客户端的实际IP地址不会被泄露。

防火墙和代理服务器的区别：

SR.NO	Firewall	Proxy Server
1	Firewall can monitor and filter all the incoming and outgoing traffic on a given local network.	Proxy server connects an external client with a server to communicate with each other.
2	It blocks connections from unauthorised network.	It facilitates connections over network.
3	It filters data by monitoring IP packets that are traversed.	It filters the client-side requests that are made to connect to the network.
4	It involves network and transport layer data.	It work on application layer data.
5	It exist as an interface between a public and private network.	It can exist with public networks on both sides.
6	It is used to protect an internal network against attacks .	It is used for anonymity and to bypass restrictions.
7	The overhead generated in firewall is more as compared to a proxy server.	The overhead generated in proxy server is less as compared to a firewall.
8	It works on the packet level.	It works on application protocol level.