Disregard: OpenVPN - Port Blocked client side?

Issues related to configuring your network
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meluvalli
Posts: 12
Joined: 2019/08/09 20:59:14

Disregard: OpenVPN - Port Blocked client side?

Post by meluvalli » 2019/08/15 09:01:16

Hello.

I have an OpenVPN server on my CentOS 7 machine. Connection works, traffic all worked except for port 25...

I have a mail server running on Side A (OpenVPN Server).

When someone from Side B (OpenVPN Client) tries to telnet into port 25 to a client on Side A, it fails. Keep in mind, this is an internal server. So it's not like the provider could be blocking it as it's just going from VPN site to VPN site.

I have no clue why. Any thoughts? Every other port works. Example, I have a WEB server on Side A and Side B can access it. I have RDP (3389) and Side B can connect to it as well. It seems as though JUST port 25 through the VPN is blocked.

It is also port 465 being blocked. (SMTP/S)
Last edited by meluvalli on 2019/08/15 09:11:33, edited 1 time in total.

meluvalli
Posts: 12
Joined: 2019/08/09 20:59:14

Re: OpenVPN - Port Blocked client side?

Post by meluvalli » 2019/08/15 09:10:16

Nevermind! My fault HAHA :) I forgot we had blocked port 25 on Client side router from getting out :)

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