CODEWITHSUNDEEP
centosvpnvpsnmappptp
user2699451
user2699451

Reputation:

Port is open on localhost but remote host reports closed port

I am trying to setup a pptp server on Centos,

I open port 1723 (pptp port) with no issues when setting up pptp, and I do a nmap scan to confirm that it is open, however when I nmap the server remotely, it doesnt even list port 1723, by which I assume that port 1723 is not accesable

Is there something I am missing, forgetting

p.s., my first time setting up, so I am noob, please forgive any mistakes or missunderstandings and please dont down vote, I really need help and posting on serverfault apparently is of topic for this too...

UPDATE after @Calvin

Thank you for your informative response, do you know of anyway I can check where it is being blocked???

Upvotes: 1

Views: 974

Answers (1)

Calvin
Calvin

Reputation: 433

It is probably being blocked by a proxy server/firewall that the remote request has to go through. So for example, you're in one location A, wanting to connect to the other location B (which you've said is setup correctly and open to requests), though the security apparatus at location A have blocked outgoing requests to whatever port range, and likely outside your control unless you know the network administrators to check with them.

Is my first assumption.

Upvotes: 0

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