No hostkey alg error from RHEL6 ssh to AlmaLinux9

Support
1

When I ssh from RHEL6 to AlmaLinux9, there is a “no hostkey alg” error. Has anyone encountered this problem? How to solve it?Thanks.

2

probably the sha1 deprecation issue

3

Yes, It is the sha1 deprecation issue. It can be solved by the following methods.

$ update-crypto-policies --set DEFAULT:SHA1
4

“solved” is not what i’d call it, you’ve basically lowered the security posture of your alma9 box to accommodate rhel6 boxes which ideally should be replaced.