Remote access system, method and program

A remote terminal, wherein its connection is accommodated by an access server and connectable to said access server by first and second logical channels;

• said remote terminal comprising a flow search processing unit that classifies flows, transmits, via said first logical channel, packets included in a first flow that needs to be judged by said access server as to whether or not the first flow can pass to said access server, and transmits, via said second first logical channel, packets included in the first flow that has been permitted by said access server to pass to said access server.

An access server, wherein a connection from a remote terminal is accommodated and connectable to said remote terminal by first and second logical channels;

• said access server comprising:
• a pass determining unit that determines whether or not flows are permitted to pass and a flow search processing unit that classifies the flows;
• means for receiving, via said first logical channel, packets included in a first flow that needs to be judged by said access server as to whether or not the first flow can pass from said remote terminal and means for receiving, via said second logical channel, packets included in the first flow that has been permitted by said access server to pass to said remote terminal.

A remote access method, wherein a remote terminal is enabled to remotely access an access server, said remote access method comprising:

• classifying a first flow;
• and
• transmitting, via a first logical channel, packets included in the first flow that needs to be judged by said access server as to whether or not the first flow can pass to said access server and transmitting, via a second logical channel, packets included in the first flow that has been permitted by said access server to pass to said access server.

A remote access method, wherein an access server is enabled to remotely access a remote terminal;

• said remote access method comprising:
• transmitting, via a first logical channel, packets included in a first flow that needs to be judged by said access server as to whether or not the first flow can pass to said access server;
• and permitting packets, received via a second logical channel exclusively for transferring packets included in the first flow that has been permitted by said access server to pass, to pass without determining whether or not they are allowed to pass.

A remote access program embodied in a non-transitory medium that has computers provided in a remote terminal and an access server that accommodates a connection from said remote terminal execute remote access processing that enables said remote terminal and said access server to remotely access each other;

• said program having the computer provided in said remote terminal classify a first flow, transmit, via a first logical channel, packets included in the first flow that needs to be judged by said access server as to whether or not the first flow can pass to said access server and transmit, via a second logical channel, packets included in the first flow that has been permitted by said access server to pass to said access server;
• and
• having the computer provided in said access server permit packets received via said second logical channel to pass without determining whether or not they are allowed to pass.