L2TP/IPSEC appear to be blocked
Well, I just had my first poor experience with Comcast Business phone support to the point where I was hung up on so I'll try to pose my question here.
I am a long time user of the comcast service and SMC gateway device from them and I have multiple port forward rules set up, smtp, www, pptp, etc. They all work fine. I have added ports for L2tp/IPSec (500, 1701, 8500 and ESP). I have not been able to connect to my Synology VPN host from anywhere outside my local LAN. I have tried from a windows 8.1 and Ubuntu client. From the internal LAN, it works fine from either platform. When I try one of those third part port check tools, it says the above mentioned ports for L2tp/IPSec are closed even though the gateway gui says they are enabled. Does anyone know if comcast blocks these and if so their reasoning?
That is the question I proposed to them and the poor level 1 guy was confused thinking I wanted him to setup my comcast device which I don't need help with. I think his supervisor had the same confusion. I hope the converstation was recorded and gets reviewed. I've never had anything but superior support from Comcast and this was a let down. Maybe I should not call on a Sunday though.