Hello,
I’m trying to use a RUTX50 with RUTX_R_00.07.13.1 as jump-host.
I want to connect with SSH to several Cisco-Switches from an RUTX50.
The Switches are running older ssh-rsa configuration.
I get this error:
ssh: Connection to xyz@10.0.0.2:22 exited: No matching algo hostkey
How can i activate old legacy algorithm on the Teltonika SSH-Client?
I need the algorithm diffie-hellman-group1-sha1
HI,
Did you tried enabling legacy algos with -oKexAlgorithms=+diffie-hellman-group1-sha1
that option is suddenly ignored
root@my-RUT300-02:~# ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 -l admin 10.10.10.10
ssh: Ignoring unknown configuration option ‘KexAlgorithms=+diffie-hellman-group1-sha1’
If I understand correctly you are trying to connect rut300 → rutx50 → Cisco switch? Before rutx50 → Cisco part failed? But if I understand correctly you are showing rut300 → rutx50 now? Or you just named you rutx50 to “my-RUT300-02” and you actually still showing error between rutx50 → Cisco ?
FYI this would only work if client is newer and server is older. Other way around you would need to change SSH server settings but now sure about it.
Hello @mathew,
Apologies for the delayed response.
Could you please confirm whether your issue has been resolved, or if you still require assistance?
Best regards,
hello,
is there no way to activate the missing algorithms on the SSH-Client-Side (Teltonika RUT300 and RUTX50)? I know: the security-level will go down.
Where is the config-File of the SSH-Client stored?
Is it possible to install another SSH-Client?
It’s impossible to make the changes on the SSH-Server Side.
It would be great to have the possibility using a Teltonika-Device as Jump-Host.
best regards!
Probably only possible by compiling your own firmware with SDK and enabling the needed algorithms because they are not included in the firmware by default so there is no way to enable them with default firmware.
Try openssh:
opkg -e /etc/opkg/openwrt/distfeeds.conf update
opkg -e /etc/opkg/openwrt/distfeeds.conf install openssh-client
opkg -e /etc/opkg/openwrt/distfeeds.conf install openssh-client-utils
it’s working fine with Open-SSH.
Great solution!
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