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FTPs Reverse Proxy with UTM possible and if yes, how?

Hi everybody,

we have a Sophos UTM 9 running in our company. It has installed a wildcard certificate for our domain and subdomain (*.company.com)

At the moment, we have (amongst others) a subdomain ftp.company.com which has firewall and DNAT rules in the UTM for all traffic arriving at port 21 to be transferred to our internal FTP server installed as a IIS role. BUT this only works for unencrypted (non ssl) traffic.

What I want to do is use the UTM as a reverse FTPs proxy to "ssl unwrap" the incoming FTPs traffic by using our wildcard certificate and then send the "regular" traffic to the FTP server.

Is this technically - and specifically with the UTM - possible?

I have searched the forum and found a lot of information regarding FTPs traffic coming from within the firewalled network but not from outside.

Thank you for your help!

Regards, Ken



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