![]() This could be because of the option mentioned above, a firewall or a change in configuration of the VPN link. My best guess to answer the question is that for some reason the ARP requests or responses are not sent through the VPN link. This method is off by default and can be configured if your router has this information. ![]() Look for (App Name) was blocked from opening because it is not from an identified developer and click Open Anyway. Click the App Store and Identified Developers radial button. Enter your username and password when prompted, and click Unlock. The Router SNMP MIB query works by querying router's .atTable or. for IP-to-MAC-address mappings. Click the lock in the lower right corner of the window. ![]() This is what gives you some MAC addresses. The NetBios request is a regular UDP packet that works in VPN, however it will only resolve the MAC address on the devices that implement this protocol. Angry IP Scanner will quickly scan IP addresses and ports and has many other features like NetBIOS information (computer name, workgroup name, and currently logged in Windows user. You can try ticking the Allow ARP outside current subnet option in the scanner, though granted Angry IP scanner did not work, this wouldn't work either. Angry IP Scanner (aka ipscan) is a free, fast, and easy-to-use network scanning utility that allows you to scan IP addresses, ports, and more. The ARP works well in a LAN subnet, but is not usually transmitted over a VPN link. macOS 12.6 Port Scan stopped working more-information-needed 375 opened by mietzen. Angry IP Scanner - fast and friendly network scanner - Issues Generally there are 3 ways the scanner uses to determine target MAC addresses: Angry IP Scanner - fast and friendly network scanner - Issues
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