Kelly, Most likely, your OpenVPN server is not listening on (not bound to) your loopback interface. Check your OpenVPN configuration file.
I understand you need to add local 127.0.0.1 to you openvpn.conf regards, Jose > On Mar 10, 2020, at 12:25 AM, Kelly Trinh <[email protected]> wrote: > > Hi all - just want to report a problem I solved recently but wanted to get > some insights on what was causing the problem. > > About me - learnt some unix at university (20 years ago) but nothing too > serious. Recently (1 month ago) acquired own domain name and now poking > around the cloud computing / VPS thing. > > Project - hand-rolling my own VPN setup on a Ubuntu 18.04 VPS. OpenVPN is > easy since it is a git-clone thing and then just follow the openvpn-install > script. I wanted to add on the Stunnel wrapper because intended to use the > VPN in China and apparently their firewall does deep packet inspection and > can recognize (and block) openvpn traffic. > > Problem - when I set up my stunnel using 127.0.0.1 as the connect > destination; it doesn't seem to work (I can see from openvpn window that > things seem to pipe through stunnel but then immediately the connection is > terminated). If I replace the 127.0.0.1 with IP of the box I am using (say > for example 1.2.3.4); everything works! The FQDN is ok as well; as long as I > don't use 127.0.0.1 > > Specifically the stunnel.conf: > > [OpenVPN] > Accept = 443 # clients connect through 443 to further avoid potential > blocking > Connect = 127.0.0.1:1194 #<- this line won't work; but if I replace with > 1.2.3.4:1194 then it will work! > > Question - My problem is fixed but I am curious if there is any insights on > why this is happening given that 1.2.3.4 and 127.0.0.1 are the same machine? > > > > _______________________________________________ > stunnel-users mailing list > [email protected] > https://www.stunnel.org/cgi-bin/mailman/listinfo/stunnel-users
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