Connection transfer method and equipment

Abstract

The invention relates to a connection transfer method and equipment. The method comprises the following steps of: receiving an internet connection request message which is initiated by a client by using gateway equipment; creating a context for the internet connection request message; transmitting an intranet connection request message to an intranet server according to the internet connection request message; receiving an intranet connection response message for the intranet connection request message from the intranet server; checking the intranet connection response message according to the checking part of the context in the intranet connection response message, and after the intranet connection request message passes the checking, finding corresponding internet connection according to the data part of the context; and transmitting an internet connection response message to the client according to the internet connection response message. According to the embodiment of the invention, when connection is established between intranet and internet, the context is set in extended message headers on a wide area network (WAN) side and a local area network (LAN) side, and after the messages are received, related information is directly indexed according to the context for connection checking and message forwarding, so that data is ensured to be transmitted securely and highly efficiently.

Description

technical field [0001] The embodiments of the present invention relate to the Internet field, and more specifically, relate to a connection conversion method and device. Background technique [0002] SSL VPN is a virtual private network (Virtual Private Network, VPN for short) technology that uses a Secure Socket Layer (SSL for short) encrypted connection to realize remote access. According to SSL VPN, an SSL connection is established between the remote host and the SSL VPN gateway, and the message is transmitted on the Internet (Internet) in an encrypted manner; and the SSL VPN gateway terminates the SSL connection, and establishes a transmission control protocol (TCP) with the server on the intranet. Transmission Control Protocol (TCP for short) connection, which transmits the request from the remote host in clear text, and sends the server's response to the remote host through the SSL connection. [0003] The SSL VPN gateway maps each accessible intranet network resource...

AI Technical Summary

Problems solved by technology

[0012] Such a connection process results in the need to traverse the lookup table entries for each connection request, resulting in low execution efficiency

Moreover, when a closed connection is reassigned, it is impossible to identify the response message of the timeout response, wasting resources

Images