Tripp Lite B093-004-2E4U-V Owner's Manual

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15. Advanced Conﬁguration

• Follow the instruction to move the mouse over the blank area of the program in order to create random data used by

PUTTYGEN to generate secure keys. Key generation will occur once PUTTYGEN has collected sufﬁcient random data.

• Create a new ﬁle “ authorized_keys “ (with notepad) and copy your public key data from the “Public key for pasting into

OpenSSH authorized_keys ﬁle” section of the PuTTY Key Generator. Paste the key data to the “authorized_keys” ﬁle. Make

sure there is only one line of text in this ﬁle.

• Use WinSCP to copy this “authorized_keys” ﬁle into the user’s home directory. For example, /etc/conﬁg/users/testuser/.

ssh/authorized_keys of the Tripp Lite gateway will be the SSH server. You will need to make sure this ﬁle is in the correct

format with the correct permissions with the following commands:

# dos2unix \

/etc/conﬁg/users/testuser/.ssh/authorized_keys && chown testuser \

/etc/conﬁg/users/testuser/.ssh/authorized_keys

• Using WinSCP, copy the attached sshd_conﬁg over /etc/conﬁg/sshd_conﬁg on the server. Doing this ensures public key

authentication is enabled.

• Test the Public Key by logging in as “testuser”. Test the Public Key by logging in as “testuser” to the client Tripp Lite device

and typing (you should not need to enter anything):

# ssh -o StrictHostKeyChecking=no <server-ip>

To automate connection of the SSH tunnel from the client on every power-up, make the clients /etc/conﬁg/rc.local look like the

following:

#!/bin/sh

ssh -L9001:127.0.0.1:4001 -N -o StrictHostKeyChecking=no testuser@<server-ip> &

This will run the tunnel redirecting local port 9001 to the server port 4001.

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Tripp Lite B093-004-2E4U-V 4-Port Console Server with 4G LTE Cellular Gateway, Dual GbE NIC, 4Gb Flash and Dual SIM