
ChrisP.20891 (Customer) asked a question.
Does Okta support hosting Okta IWA webapp on public network? So we can auth and sso our external clients without vpn?

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We use cookies to provide the best website experience and to help understand marketing efforts. We may also share data with ad partners to reach potential customers across the web. To learn more, visit our Privacy Policy. Click here for Your Privacy Choices. You may also opt out of this sharing by signaling your preference via GPC, applicable only to the browser signaling the opt-out.
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I think this is technically possible, but not really a good idea. I'd highly recommend against this.
When a user logs into a domain-joined PC, they will be authenticated by a DC and then issues a kerberos ticket. If the PC is off-network and a DC is not reachable, then the user will not authenticate against a DC and will instead use a cached password. And since you can't connect to a DC, you won't have the kerberos ticket issued. The kerberos ticket is what's used when authenticating with IWA. So you'll have to solve that problem too, along with plenty of others.
The most common solution is to just use VPN. This way, both the IWA server and DC can be made accessible through the VPN.
Okta's Agentless Desktop SSO, which is available as Early Access (EA), may solve some of the problems. Link to documentation with a nice diagram below:
help.okta.com/en/prod/Content/Topics/Directory/Configuring_Agentless_SSO.htm