SL2100 Crashing - When ports open for remote workers.

[FoneJacker]

Hi, We've noticed that the SL2100 seems to lock up its SIP reg as in it wont allow connections at all until rebooted if you open 5070/5080 UDP to the internet. It appears people attempting to scan/hack the system results in this.

Now that people want to work for home on dynamic public addresses we have to open 5070/5080.

Is there any work around? we can move the port numbers but will that be a short term fix? What are others doing for remote workers?

 

[OzzieGeorge]

Either set up VPNs or get an SBC.

 

[belevedere]

Change the ports used in the SL2100 and the router.

 

[OzzieGeorge]

Yes but they will still be at risk surely?

 

[jsaad]

I have a cable modem and fios both 'dynamic'. The IP on the fios hasn't changed in years and the cable modem once every 6 months maybe. I believe you allow only the specific external IPs that can access the sl2100 ports it will perform as desired.

 

[Kinetix]

Hackers normally scan IP's for the most common open ports.
You can delete any unused extension ports and password-protect any SIP Extensions currently in use. This will ensure that the hackers cannot register to any other "available" extensions/ports...