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Within SSHD.conf there are older unsupported security ciphers that the industry has recommended to be mitigated. (This was found during a network security scan)
Below is an export from SSHD.conf in its original file.
# Limit the Ciphers and MACs to those approved in NMS-43491 for default mode
Ciphers aes128-cbc,aes256-cbc,aes128-ctr,aes192-ctr,aes256-ctr
MACs hmac-sha1,hmac-sha1-96,hmac-sha2-256,hmac-sha2-512,hmac-md5,hmac-md5-96
Here is the config that I enabled that disabled / broke cluster communications:
# Limit the Ciphers and MACs to those approved in NMS-43491 for default mode
Ciphers aes128-ctr,aes192-ctr,aes256-ctr
MACs mac-sha2-256,hmac-sha2-512,
Why does the SevOne backend still use hmac-md5,hmac-md5-96 ciphers? (if you disable hmac-md5,hmac-md5-96 ciphers the cluster goes into a state where HSA's cannot communicate, VIP's fail, chronyd fails and a bunch of other issues arise.) You can safely remove hmac-sha1,hmac-sha1-96, but MD5 is absolutely needed for back end communication...
Can these older MD5 security cipher's needed for back end SevOne communicate please be addresses in a future version of SevOne by hopefully using SHA2? MAC's?
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