Connection fails with "Fatal: Unable to negotiate a key exchange method" message
The problem may be related to the potentially incompatible changes introduced in OpenSSH 6.7 (included in Copssh 5 and higher) to remove unsafe algorithms.
- If you run Copssh 5.8.1 or higher, you can update the configuration via GUI - Configuration -> Advanced -> KexAlgorithms, set value to +diffie-hellman-group1-sha1
- Alternatively, you can add following line to the section of the configuration file control/bin/copsshcp.config before starting Copssh Control Panel:
KexAlgorithms=+diffie-hellman-group1-sha1
- Restart the service via Copssh Control Panel
Release announcements
- 2024-07-31 Copssh client 7.15.0
- 2024-07-31 CowAxess 2.3.0
- 2024-07-26 OpenSSL tool 2.0.0
- 2024-07-23 cwRsync client 6.3.1
- 2024-07-12 Nagwin 5.5.0