[SOLVED] Linux VPS and open ports

Jason.nix · 02-18-2024, 04:19 AM

Hello,
When I scan the VPS IP address, I see a number of open ports:

Code:

# nc -v 1.2.3.4 5060
static.4.3.2.1.clients.Servers.de [1.2.3.4] 5060 (sip) open
#
# nc -v 1.2.3.4 2000
static.4.3.2.1.clients.Servers.de [1.2.3.4] 2000 (cisco-sccp) open

But there are no services running on these ports on the operating system:

Code:

# netstat -nat
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address    Foreign Address         State      
tcp        0      0 1.2.3.4:22       0.0.0.0:*               LISTEN     
tcp        0    224 1.2.3.4:22       5.6.7.8:40080           ESTABLISHED
tcp6       0      0 :::9090          :::*                    LISTEN

Do these ports belong to the VPS provider?

Thank you.

rkelsen · 02-18-2024, 09:50 PM

They seem to both be telephony related ports.

What does the provider's documentation say about open ports?

If in doubt, you could easily firewall those ports to protect the machine.

Jason.nix · 02-19-2024, 04:59 AM

Quote:

Originally Posted by rkelsen

They seem to both be telephony related ports.

What does the provider's documentation say about open ports?

If in doubt, you could easily firewall those ports to protect the machine.

Hello,
Thank you so much for your reply.
When no service is running on those ports, is it necessary to close those ports?

rkelsen · 02-19-2024, 05:07 AM

It's probably not necessary, but I'd do it anyway.

sundialsvcs · 02-19-2024, 09:01 AM

"Computers are terrible at knowing when to say 'yes,' but terrific at saying 'no!'" Use this fact to your advantage.

Jason.nix · 02-19-2024, 12:38 PM

Hi,
Thank you for all the replies.