Difference to a NAT device in Proxy server

[Bruno007]

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On the face of a situation is NAT device similar work but unlike a typical proxy: based on, power does the NAT better with an ingenious rail system behind the door slot, compare that to the pizza delivery slid pizzas directly to the real receiver can glide. Although NAT also hides the true identity of the recipient, there is a manipulation and analysis of packet contents are not possible. Technically, working a typical proxy as the market engaging communication partners on the OSI layer 7, where the compounds or terminated are both on (it is thus two separate connections), instead of the packages as a NAT device just percolating. Such a dedicated proxy is a utility for computer networks, which in data traffic communicated and is therefore a proxy server called: As an active mediator, it behaves to the requesting client over how a server, the other side, the target system, compared to how a client. NAT is an overlap to it but at the generic, the OSI layers 3 and 4 operating circuit level proxy that also on the technique of simple address translation relies on. Nonetheless, NAT takes a little-noticed role in the proxy. It is therefore considered below the first described variant, where in general one (typical) Proxy is mentioned.

[Lord of the RIG]

A conventional proxy occurs both sides even as alleged communication partners towards. It is being raised so aware (addressed). Here, the client asks the proxy to take a representative for it to communicate with the target system. For example, is the internet browser configured to all Internet inquiries are not directly sent to the destination address, but formulated as a request to the proxy sends. In addition, there is the transparent proxy in a special network component, which is one of the two sides transparent (almost invisible) behaves opposite. This site directly addresses the goal and not the proxy. By the central structure of the network, the request concerned where it is automatically routed through the proxy without the sender of this notice, or may even influence.

[afidelino]

By the central structure of the network, the request concerned where it is automatically routed through the proxy without the sender of this notice, or may even influence.

For the other side but the proxy continues to be the communication partner to be addressed, the issue raised is representative of the actual communication party. Thus, a proxy for general occurs at least one of the two sides, even in appearance as a supposed communication partner. A proxy as a separate network component is physically located between the source and target systems. Within an IP network, it takes a conversion of the IP address from when the packet network through on their way to the target pass through the proxy. This allows the true IP address of the actual communication partner Hide and connect individual subscribers of a network or even entire networks to each other even if they are addressing technically incompatible with each other.

[Wannabe]

The local proxy is running on the other hand directly on the source or target system and is logically (not physically) between the Network Service to be contacted and the requesting client. It is usually used as a filter or converter. As it enters into local action, that is, before the packets are routed in the network (local proxy on the source system), or after the packets have reached the target system (local proxy on the target system), this proxy is not in a position to to hide the true IP address of the communication system. This distinguishes him from those of other proxies of an IP network. However, a local proxy on the source system may well be helpful, the network request to send an automated external proxy, with the local proxy then manages this kind of diversion, thus contributing its share to the anonymity of their own IP address.

[AlienKing]

A proxy server can be used to generally, the actual server in a protected network to place, making it external power only through the proxy is reachable from. In this way one tries to protect the server from attacks. The proxy software is less complex and therefore offers less points of attack. This solution is for example in online shops used: The web server is located, together with proxy on the Internet and accesses the database of customer data behind a firewall. The proxy divides different users and groups to different resources depending on the workload.