Port Issue

milan_ver — Tue, 12 Mar 2019 01:05:39 GMT

Hi,

I have open port#5666 on my firewall between my 2 server. one is in my inside netwrork & one is in my DMZ.

I trid to telnet via port but its goes disconnect.

Please let me know how to trace where it blocking.

Is there is any way to ping IP with port number ?

Regards,

Milan Verma

Port Issue

Jouni Forss — Tue, 26 Feb 2013 10:47:03 GMT

Hi,

The easiest way to check this situatin would naturally be to see your configurations.

I would suggest trying the actual connection and monitoring it through the ASDM Monitor section and see what happens to the connection. Is it getting blocked? Does it get through but gets SYN Timeout or perhaps something else?

I guess there are softwares you could use to determine if a certain port is open all the way. But I'd imagine if you are using a firewall in between there should be no other networking device preventing this connection (unless there are several firewalls in between)

On newer softwares of ASA you could use "ping tcp" command to test if a certain TCP port is listening on a host or just otherwise reachable directly from the ASA firewall.

- Jouni

topic Port Issue in Network Security

Port Issue

Port Issue