You can call some SAFs from Init in magnus.conf as well as from ObjectType directives in obj.conf. These SAFs are documented in Chapter 7, Predefined SAFs and Filters in obj.conf, as referenced below:
block-auth-cert
block-cache-info
block-cipher
block-ip
block-issuer-dn
block-jroute
block-keysize
block-proxy-agent
block-proxy-auth
block-secret-keysize
block-ssl-id
block-user-dn
block-via
forward-auth-cert
forward-cache-info
forward-cipher
forward-ip
forward-issuer-dn
forward-jroute
forward-keysize
forward-proxy-agent
forward-proxy-auth
forward-secret-keysize
forward-ssl-id
forward-user-dn
forward-via
http-client-config
ssl-client-config