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CESNET / netopeer2

NETCONF toolset
BSD 3-Clause "New" or "Revised" License
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How to set the key exchange algorithm for netopeer2-server? #1456

Open Agao404 opened 10 months ago

Agao404 commented 10 months ago

Hi michalvasko,

I specified KexAlgorithms diffie-hellman-group-exchange-sha256 in the client's config file, but the connection to netopeer2-server fails. If I comment out the KexAlgorithms parameter in the config file, I can connect successfully. Can you please give some suggestions?

Here are some logs。 server: [INF]: LN: Accepted a connection on 0.0.0.0:830 from 10.7.3.30:65315. [INF]: SR: Session 394 (user "root", CID 19) created. [2000/01/13 05:14:36.943868, 1] ssh_retrieve_dhgroup: Unable to open moduli file: No such file or directory.

client:

connect --login dasUser --host 10.7.3.200 nc DEBUG: nc_sock_connect(10.7.3.200, 830, -1, -1) nc VERBOSE: Trying to connect via IPv4 to 10.7.3.200:830. nc VERBOSE: Successfully connected to 10.7.3.200:830 over IPv4. [2023/08/16 07:45:17.933824, 1] socket_callback_connected: Socket connection callback: 1 (0) [2023/08/16 07:45:18.059305, 1] ssh_known_hosts_read_entries: Failed to open the known_hosts file '/etc/ssh/ssh_known_hosts': No such file or directory nc ERROR: SSH connect timeout. cmd_connect: Connecting to the 10.7.3.200:830 as user "dasUser" failed.

libnetconf2：2.1.35 libyang: 2.1.96 sysrepo:2.2.93 libssh 0.10.5

michalvasko commented 10 months ago

This behavior depends only on libssh, which seems to have printed a relevant error. In any case, you need to ask them for help, I do not know these details.