Using SECURECRT forwarding function to realize Internet access intranet service

Source: Internet
Author: User
A: Intranet Linux system, not on the network ip:192.168.6.10 have the following services 22 ports Ssh2
B: (Windows System) intranet host, you can access a host, you can access the C host through the gateway.
C: Extranet Linux system, public network ip:202.108.16.5 has the following services 22 port Ssh2
D: (Windows System) intranet host, you can access the external network C host
-------------------------------------------------------------------------1. Intranet B host SECURECRT settings are as follows:
1. During the session of a host that can log in normally, the configuration is as follows: 1. Enter the session options option, click Port Forwarding, click the "Add" button, 2. Name:b22 Description of a steering service name, fill out at random 3. Local IP IP address, do not fill out, the default is localhost 4. The local port:22 SECURECRT client opens the B native port, which is the B native localhost Port 5. Remotely hostname: Remote server IP address does not need to fill out the default is a's IP address 6. Remote port:22 a server SSH service port
2. Test b for local forwarding
In Host B: perform telnet localhost 22 display: SSH-1.99-OPENSSH_3.9P1 says SECURECRT has successfully done port forwarding for you.
or use the Netstat-an command to view the listening port
3. SECURECRT Set C host
In the normal access to the C host session, the configuration is as follows: 1. Enter the session options option, click Remote/x11, click the "Add" button, 2 name:c3333 description of a steering service name, fill in 3 at random. Remotely IP: Remote server IP address do not need to fill out the default is the C host IP address 4. Remote port:3333 Server SSH service port (this port is not occupied by other services) 5. Local Hostname: Native IP address, do not fill in, default is localhost 6. Local port:22 SECURECRT client-side B-Port is the B native localhost port
4. Test C for local forwarding
In Host C: perform telnet localhost 3333 display: SSH-1.99-OPENSSH_3.9P1 says SECURECRT has successfully done port forwarding for you.
Or use the Netstat-ltn |grep 3333 command to view the listening port
-------------------------------------------------------------------------2. External Network D host SECURECRT settings are as follows
1. In a normal landing in the C host session, the configuration is as follows: 1. Enter the session options option, click Port Forwarding, click the "Add" button, 2. Name:d22 Description of a steering service name, fill out at random 3. Local IP IP address, do not fill out, the default is localhost 4. The local port:22 SECURECRT client opens the D native Port, which is the D native localhost Port 5. Remotely hostname: Remote server IP address does not need to fill out the default is a's IP address 6. Remote port:3333 C Server SSH service port
2. Test d for Local forwarding
In Host B: perform telnet localhost 22 display: SSH-1.99-OPENSSH_3.9P1 says SECURECRT has successfully done port forwarding for you.
or use the Netstat-an command to view the listening port
3. SecureCRT Set D landing a 1 to create a new session 2 Hostname:localhost login local 3) port:22 port map a host to fill in a host User and password. Successful Landing




Instance screenshot:
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Turn from: http://blog.itpub.net/12272958/viewspace-714425/

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