Router validating identity error
Communication between two computers (shown in grey) connected through a third computer (shown in red) acting as a proxy.
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The response from the proxy server is returned as if it came directly from the original server, leaving the client no knowledge of the origin servers.
Reverse proxies are installed in the neighborhood of one or more web servers.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at ) if sending one of the latter errors would provide information about the intended recipient's network availability to an entity that is not authorized to know such information (for a more detailed discussion of presence authorization, refer to [XMPP‑IM] The requesting entity is not authorized to access the requested service because a prior subscription is necessary (examples of prior subscription include authorization to receive presence information as defined in [XMPP‑IM] The error condition is not one of those defined by the other conditions in this list; any error type can be associated with this condition, and it SHOULD NOT be used except in conjunction with an application-specific condition.
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