Team, I'm looking for an ACL rule that limits VoIP traffic from a specific external source IP and a specific internal destination port. While realizing that the return path is vice-versa => I expect...

@MR.S Correct - there is no vlan on the WAN-side: Basically its all about 5 public IP's representing 5 customer sites. However, for staging purposes we connect everything on one site with 5 public...

@MR.S Unfortunately the problem is still there... Attached a schematic overview of the workbench setup. Basically its all about 5 public IP's representing 5 customer sites. However, for staging...

@MR.S It looks like we found the root-cause: the ISP router. We did a factory reset of this router and configured everything from scratch. We are now working on bringing the bench back to its...

@MR.S Just connected the ER605 with WAN-DHCP to the ISP router. Meaning it receives an IP address in the subnet of the LAN-side of the ISP-router. Everything is working as expected; including DNS and...

@MR.S See my previous message: no - the main router towards the Internet is a Box12 (from ISP-KPN).