Mikrotik + freeradius auth with /etc/shadow

Hello,

I want to authenticate Mikrotik local users with Freeradius.
It is working good if I use passwords from ‘users’ file.
But it is error if I want to use linux local system users (located in /etc/shadow)

Can Mikrotik+freeradius make user auth with linux shadow file?

Mikrotik doesn’t know anything about your /etc/shadow file. The problem is thus completely related to configuration of whatever radius implementation you’re using.

As of v6.43 the login service RADIUS authentication uses MS-CHAPv2 so your radius server needs either plaintext or NTLM password hashes, it is impossible to use any salted hashes.