Hi there,

using an ER6020 to provide Internet access, I have to filter a port (5060) AND an IP address (the VoIP provider), because we are experiencing a very important lot of connection attempts on the PBX and I want to be able to block them upstream of the IPBX.

I think I'm doing something wrong because port 5060 keeps passing connection attempts from all IP addresses (not just the VoIP provider as expected)

The PBX is configured as a virtual server in the NAT rules with port 5060 UDP, as usual.

I may have searched the documentation wrong, but I would like to know how to completely block a port unless it comes from a single IP address.

Thanks in advance

Jérôme