Ssh Key Exchange

Test suite for validating SSH access control options

SSH Connection Key Exchange

Description

Sets the SSH service with a single key exchange algorithm (curve25519-sha256) and checks that the client can connect to the remote server with that algorithm. Later, checks that using a different algorithm fails.

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 10.215.168.20/24
set service ssh key-exchange curve25519-sha256

Step 2: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 10.215.168.21/24
set service ssh

Step 3: Ping IP address 10.215.168.20 from DUT1:

admin@DUT1$ ping 10.215.168.20 count 1 size 56 timeout 1
Show output
PING 10.215.168.20 (10.215.168.20) 56(84) bytes of data.
64 bytes from 10.215.168.20: icmp_seq=1 ttl=64 time=0.426 ms

--- 10.215.168.20 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.426/0.426/0.426/0.000 ms

Step 4: Init an SSH connection from DUT1 to IP address 10.215.168.20 with the user admin:

admin@DUT1$ ssh admin@10.215.168.20 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null key-exchange curve25519-sha256
Show output
Warning: Permanently added '10.215.168.20' (ED25519) to the list of known hosts.
admin@10.215.168.20's password:
Welcome to Teldat OSDx 202401241058.f949bb7-v3.9.1.2-snapshot

This system includes free software.
Contact Teldat for licenses information and source code.

Last login: Wed Jan 24 23:50:50 2024 from 10.215.168.21
admin@osdx$

Step 5: Init an SSH connection from DUT1 to IP address 10.215.168.20 with the user admin:

admin@DUT1$ ssh admin@10.215.168.20 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null key-exchange diffie-hellman-group14-sha1

SSH Connection Key Exchange (multiple)

Description

Sets the SSH service with multiple key exchange algorithms (curve25519-sha256 and diffie-hellman-group-exchange-sha256) and checks that the client can connect to the remote server with those algorithms. Later, checks that using a different algorithm fails.

Scenario

Step 1: Set the following configuration in DUT0:

set interfaces ethernet eth0 address 10.215.168.20/24
set service ssh key-exchange curve25519-sha256,diffie-hellman-group-exchange-sha256

Step 2: Set the following configuration in DUT1:

set interfaces ethernet eth0 address 10.215.168.21/24
set service ssh

Step 3: Ping IP address 10.215.168.20 from DUT1:

admin@DUT1$ ping 10.215.168.20 count 1 size 56 timeout 1
Show output
PING 10.215.168.20 (10.215.168.20) 56(84) bytes of data.
64 bytes from 10.215.168.20: icmp_seq=1 ttl=64 time=0.545 ms

--- 10.215.168.20 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.545/0.545/0.545/0.000 ms

Step 4: Init an SSH connection from DUT1 to IP address 10.215.168.20 with the user admin:

admin@DUT1$ ssh admin@10.215.168.20 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null key-exchange curve25519-sha256
Show output
Warning: Permanently added '10.215.168.20' (ED25519) to the list of known hosts.
admin@10.215.168.20's password:
Welcome to Teldat OSDx 202401241058.f949bb7-v3.9.1.2-snapshot

This system includes free software.
Contact Teldat for licenses information and source code.

Last login: Wed Jan 24 23:51:10 2024 from 10.215.168.21
admin@osdx$

Step 5: Init an SSH connection from DUT1 to IP address 10.215.168.20 with the user admin:

admin@DUT1$ ssh admin@10.215.168.20 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null key-exchange diffie-hellman-group-exchange-sha256
Show output
Warning: Permanently added '10.215.168.20' (ED25519) to the list of known hosts.
admin@10.215.168.20's password:
Welcome to Teldat OSDx 202401241058.f949bb7-v3.9.1.2-snapshot

This system includes free software.
Contact Teldat for licenses information and source code.

Last login: Wed Jan 24 23:51:30 2024 from 10.215.168.21
admin@osdx$

Step 6: Init an SSH connection from DUT1 to IP address 10.215.168.20 with the user admin:

admin@DUT1$ ssh admin@10.215.168.20 option StrictHostKeyChecking=no option UserKnownHostsFile=/dev/null key-exchange diffie-hellman-group14-sha1