KpyM Telnet/SSH Server - Forum
| Invalid ephemeral DH key size error |
| Michael |
Invalid ephemeral DH key size error |
Apr 03 2017 06:27 |
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Hey there,
Trying to connect to KpyM via ssh from MAC OS X 10.11.5 and get the following error in the logs:
can't read login
ssh info: Client requested invalid ephemeral DH key size 7680 bits, should be 1016...4096
session.exe end
have tried the preferredAuthentications and blowfish solutions.. any ideas?
The server works great connecting from putty on windows
thanks
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| tori |
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May 03 2017 03:24 |
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I have exactly the same problem. By any chance, have you figured out a solution?
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| Geoff |
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Oct 19 2017 07:39 |
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Same problem here.
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| James |
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Dec 23 2017 20:42 |
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adding
KexAlgorithms diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
to the relevant section of your openssh client's config should fix the issue.
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| kjote |
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Feb 27 2018 15:11 |
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The problem appeared after one of MAC OS updates in 2017.
Generally, there are 2 ways to solve this issue.
1. Edit your ssh_config file and uncomment Ciphers and MACs section:
sudo nano /etc/ssh/ssh_config
Find the strings:
Ciphers aes128-ctr,aes192-ctr,aes256-ctr,aes128-cbc,3des-cbc
MACs hmac-md5,hmac-sha1,umac-64@openssh.com
After that ssh will work as usual.
2. Add parameters from command line:
ssh -oCiphers=3des-cbc -oMACs=hmac-md5 10.0.0.11 -l <user>
Hope it helps.
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