For the Metadata Server you can check the NETENCRALG and CEL settings in sasv9.cfg and sasv9_usermods.cfg:
$ pwd
/opt/sas/config/Lev1/SASMeta/MetadataServer
$ grep -i 'netencralg\|cel' sasv9.cfg
-netencralg "AES"
-objectserverparms "cel=everything protocol=bridge ...
For the other servers this is set in SAS Management Console in the connection properties for the server.
Encryption for Data In Motion
https://go.documentation.sas.com/doc/en/bicdc/9.4/bisecag/n18y8dk8uv3k68n19o46db1tk9hl.htmHow to Change the Encryption Level for Data in Motion for IOM Servers
https://go.documentation.sas.com/doc/en/bicdc/9.4/bisecag/n1541l2h3cufhan147rnbijtsmnn.htm
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Greg Wootton | Principal Systems Technical Support Engineer