Outbound network access blocked on a port 1025

English Network/Internet
#1

Hi,

I seem to have a problem similar to another poster who posted some time ago. Except, I am trying to connect to port 1025 (Teradata Database connection). I used to be able to connect fine some days ago and it now stopped. I also have a VM Player image running locally on my machine and connecting to that too doesn’t work. The applications just hang forever. I must mention that the hosts themselves are reachable, since ssh works. I have turned off firewall, although I used to be able to connect with firewall on.

Any ideas what could be wrong or how I go about investigating this problem?

Thanks

#2

On 2014-05-17 02:26, JantarMantar wrote:
>
> Hi,
>
> I seem to have a problem similar to another poster who posted some time
> ago. Except, I am trying to connect to port 1025 (Teradata Database
> connection).

Ok: where is the client, where is the server, what is in between. What
are each one running.

Start explaining that :slight_smile:

On the server, you could try something like this:


netstat -puta --numeric-ports | grep 1025

To find out if that database is listening.

–
Cheers / Saludos,

Carlos E. R.

(from 13.1 x86_64 “Bottle” (Minas Tirith))

#3

And as usual, we have no idea what you are running if you don’t tell. E.g what version of openSUSE?

#4

Sorry. Here are some more details:

I am running 64 bit OpenSUSE 13.1 with current kde, current kde extra and packman repos. All have priority 99.

I am running several (ODBC/JDBC) applications on my OpenSUSE laptop which establish connection to servers running Teradata databases. Teradata database listens on port 1025 for incoming connections. I can also run a Teradata database server in a VM Player image, not natively, on my OpenSUSE laptop as well. I know the servers running Teradata are listening on port 1025, because other people (and myself when using windows) can connect to it. Here’s the output of netstat -puta command. I can tell that’s a process associated with Teradata Database server.

tcp        0      0 *:1025                  *:*                     LISTEN      4332/gtwgateway

So the problem I am running into is, since last few days I can’t connect to the servers that are running Teradata database (listening on 1025). As I said, the hosts themselves are reachable because I can ssh into the servers on standard port 23. I have disabled the firewall on my laptop (the client) thinking it might be blocking applications trying connect servers listening on port 1025. But that hasn’t helped. Are there any tools that allow me to investigate network issues when applications running on my laptop try to make connections on a specific port on any external (or my VM image) servers?

I hope I was a bit clearer explaining the issue this time around.

Thanks

#5

On 2014-05-17 14:16, JantarMantar wrote:

> (the client) thinking it might be blocking applications trying connect
> servers listening on port 1025. But that hasn’t helped. Are there any
> tools that allow me to investigate network issues when applications
> running on my laptop try to make connections on a specific port on any
> external (or my VM image) servers?

You could try traceroute, specifying the tcp port to use.


traceroute -T -p 1025 host_ip

Then, you could fire up wireshark, aka ethereal, to see what goes on the
cable.

–
Cheers / Saludos,

Carlos E. R.

(from 13.1 x86_64 “Bottle” (Minas Tirith))