You can whitelist Service URLs for Wasabi's Storage Regions to make firewall exceptions.
When possible in firewall settings, Wasabi recommends whitelisting the Wasabi service URL (that is, s3.wasabisys.com) as it is more dynamic than attempting to whitelist all IPs that resolve to a specific address/URL. Wasabi does not publish our IP addresses because as our service scales, we are continually adding new IPs to the range of IPs used for a service URL. Whitelisting the IPs can eventually result in issues reaching a Wasabi storage region and the list of IPs in the firewall exception may have to be updated.
If you must make a firewall exception using IP addresses specifically, you can determine the current IP addresses that are being used by performing a nslookup command from the command line, as shown below.
This example uses the us-east-1 Wasabi storage region URL. You can use any other appropriate Service URL for Wasabi's storage regions.
% nslookup s3.wasabisys.com
Server: 192.168.1.1
Address: 192.168.1.1#53
Non-authoritative answer:
Name: s3.wasabisys.com
Address: 38.27.106.51
Name: s3.wasabisys.com
Address: 38.27.106.53