The first 24 bits of the MAC are the identifier number of the manufacturer and the second 24 bits are a serial number assigned by the manufacturer. In terms of format, MAC addresses are 48-bit in length and typically represented in hexadecimal format, with each two hexadecimal digits separated by “:”.
Taking in consideration the OSI model, MAC addressing works at a layer (layer 2) lower than IP addressing (layer 3). So, MAC addresses are hardware addresses that uniquely identify a network adapter. But, just as a quick explanation, the MAC address is a unique value associated with a network adapter.
How to Set Up DHCP Reservations In addition try limiting your IP pool size to maximum number of devices you think need to be connected to your network.The objective of this short post is to explain how to get the MAC address of the ESP8266.Įxplaining in detail what is a MAC address is outside of the scope of this post. If you don't see suspicious MAC addresses anymore, switch to DHCP again but use DHCP Reservations for assigning IP addresses.In some ways this is similar to static IP addressing.When your devices are all connected check to see if suspicious MAC addresses appear again.I suppose you have a fixed number of devices so it would be better to give each device a static IP for this experiment.Furthermore, determine MAC addresses of your devices and activate MAC filtering.Hide your wifi AP SSID and set strong password.In the wifi settings determine Transmit power of your wifi based on your need.High transmit power means your AP in reachable from farther distance and gives a chance to intruders.configure your router using cable connection.
Regarding interference from other wifi APs please take into consideration wifi APs with hidden SSID running on overlapping channels that can interfere with your.Therefore,try to monitor all wifi access points within range using proper software such as inSSIDer.I would also suggest you consider the following steps In the end, as others have suggested the only way to conclusively determine what the issue is would be to run a packet capture/trace to see what traffic that MAC address is generating, which might require changing the router with one that supports such inspection. They're also having traffic routed through that main computer's interface, thus using the main computer's MAC address. It's likely the reason that banning them on your router's DHCP table doesn't seem to work is that they don't need DHCP to function - they're using the host computer's IP address. Perhaps traffic generated by those sessions is causing the internet to be slow, as 1MBps can easily be clogged up by streaming or downloading etc. In this case, you have two possibilities:ġ) A malicious actor somehow spoofing MAC addresses on your internal network, orĢ) A computer on your network has some type of virtual (VPN, Virtual Machine, Docker Container, Internet Connection Sharing, etc) adapter(s) which are registering with your router as they show up in the subnet's ARP table. They aren't assigned to any individual vendor by the IEEE. Those 5 MAC addresses all are in the 00:FF domain, which are traditionally used for bridged/routed adapters. I even checked all my other devices’ MAC addresses. My 2 DELL laptops appear separately with their own MAC addresses starting with 9c:2a and 64:5a respectively. I “banned” these 5 under router’s MAC filter, yet they pass through.
Tried several complex passphrases for a month now. I’ve been using WPA2-PSK authentication, with AES encryption. “Possibly weak passphrase for Wi-Fi, hence neighbours using it.”.User drjimbob helped to eliminate other possible causes for slow internet, and here’s my research: Router: Tenda D303, Location: India, Connection: BSNL Unlimited 1Mbps broadband. Previously, I mentioned 5 unknown MAC addresses often connecting to my router, and noticeably causes my internet to be slow.