steef82 wrote

Model :

Hardware Version :

Firmware Version :

ISP :

I just audited my network and the following error came up:

TCP port 0 is open on the remote host. This is highly suspicious as this TCP port is reserved and should not be used. This might be a backdoor (REx).

So why is port 0 open on the switch? How can I close it?

Device Description	TL-SG1016DE
MAC Address	60:e3:xxxxxxxx
IP Address	10.0.0.182
Subnet Mask	255.255.0.0
Default Gateway	10.0.0.2
Firmware Version	1.0.1 Build 20131023 Rel.33236
Hardware Version	TL-SG1016DE 1.0

steef82 wrote

NMAP also detects port 0 open:

sudo nmap 10.0.0.182 -p 0

Starting Nmap 7.01 ( https://nmap.org ) at 2017-11-04 09:54 CET
Nmap scan report for TL-SG1016DE.*****.net (10.0.0.182)
Host is up (0.0062s latency).
PORT STATE SERVICE
0/tcp open unknown
MAC Address: 60:E3:27:26:00:CB (Tp-link Technologies)


Nmap done: 1 IP address (1 host up) scanned in 0.56 seconds

steef82 wrote

I'm using v1.0. So it seems it is fixed in newer models.

Can I expect a firmware update which resolves this issue?