Zarathustra[H]
Extremely [H]
- Joined
- Oct 29, 2000
- Messages
- 38,639
Hey all,
I am considering setting up my own mail server, but I understand ISP's usually block the needed ports.
So I decided to test.
I set up ports 25, 465 and 587 on my router to forward to my SSH port on one of the servers on my network.
Then I proceeded to ssh to a remote server, and try to ssh back.
To my surprise I found that I could make incoming connections to my network on all three of those ports.
Is this all I need to worry about, or is there something else? What about outgoing traffic? Might my port 25 outgoing be blocked? Could I just configure my mail server to send on a different port if that is the case? Would that work?
Appreciate any thoughts on this. This should be a simple concept, but somehow I am getting myself confused.
I'd appreciate someone setting me straight.
Thanks
I am considering setting up my own mail server, but I understand ISP's usually block the needed ports.
So I decided to test.
I set up ports 25, 465 and 587 on my router to forward to my SSH port on one of the servers on my network.
Then I proceeded to ssh to a remote server, and try to ssh back.
To my surprise I found that I could make incoming connections to my network on all three of those ports.
Is this all I need to worry about, or is there something else? What about outgoing traffic? Might my port 25 outgoing be blocked? Could I just configure my mail server to send on a different port if that is the case? Would that work?
Appreciate any thoughts on this. This should be a simple concept, but somehow I am getting myself confused.
I'd appreciate someone setting me straight.
Thanks