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Feb 10 2020
1:33 AM
It looks like I fixed it. I looked around for port openings for O365 and found som other stuff. Then i tried this: I opened port 80 in the FW with the VPN-Network as source towards the server. And the customer got back to me and told me it looked OK now. But they are doing som testing today.
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Feb 7 2020
6:30 AM
So having VPN network for example 192.168.3.0/24 and LAN network 192.168.2.0/24 is not good?
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Feb 7 2020
5:49 AM
A lot of help here, and I appreciate it! A lot of questions from you and I dont know if I have answered all of them. It´s been an intensive couple of days. But the thing is, we have kind of concluded that it is not a DNS problem. But perhaps a firewall problem. Do I need to open some ports for Office365 over VPN? Because the only rule that is set up today for the VPN network is: "Allow - Any Protocol - Source: [VPN Network] - Src port: Any - Dest: [LAN Network] - Dest port: Any" And then there is two other rules including soruce "Any" on port 25,443 towards local server.
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Feb 6 2020
11:19 PM
One question on this. The VPN is set up so they of course get their own subnet while on the VPN. So it is the same for the ones in Sweden and for the ones in Denmark. Do I really need to allow traffic from their local network range?
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Feb 6 2020
11:17 PM
Exchange is on-prem but is supposed to move to the cloud in the near future. Yeah I am with you on that!
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Feb 6 2020
11:15 PM
I will ask them to do that and see the outcome.
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Feb 6 2020
11:10 PM
A full tunnel VPN. It's a L2TP VPN through Windows. I will look into doing some pcap.
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Feb 6 2020
7:05 AM
Hi, I have encountered this problem with my costumer where they connect through VPN from Denmark (another domain), to their HQ in Sweden, and when they do their Outlook stop working. And when they disconnect from the VPN it starts working again. Therefor I wonder if it is some kind of firewall problem? Do I need to allow their domain maybe? Do you have any ideas what to do?
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My Accepted Solutions
| Subject | Views | Posted |
|---|---|---|
| 60630 | Feb 10 2020 1:33 AM |
