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2. MAC filtering - Wikipedia

   en.wikipedia.org/wiki/MAC_filtering

   In computer networking, MAC address filtering is a network access control method whereby the MAC address assigned to each network interface controller is used to determine access to the network. MAC addresses are uniquely assigned to each card, so using MAC filtering on a network permits and denies network access to specific devices through the ...

3. IP address blocking - Wikipedia

   en.wikipedia.org/wiki/IP_address_blocking

   Unix-like operating systems commonly implement IP address blocking using a TCP wrapper, configured by host access control files /etc/hosts.deny and /etc/hosts.allow.. Both companies and schools offering remote user access use Linux programs such as DenyHosts or Fail2ban for protection from unauthorized access while allowing permitted remote access.

4. Help:I have been blocked - Wikipedia

   en.wikipedia.org/wiki/Help:I_have_been_blocked

   Problem with your username - your username was unsuitable and has been blocked; you need to choose another before continuing. Unintended triggering of anti-vandalism systems (known as "collateral damage") - your IP address unfortunately happens to match an IP address used by a blocked account. Ask for further information and/or request unblocking.

5. Find and remove unusual activity on your AOL account

   help.aol.com/articles/find-and-remove-unusual...

   • Apps connected to your account - Apps you've given permission to access your info. • Recent account changes - Shows the last 3 password changes. Click show all to see all changes. IP addresses in Recent activity. Your IP address is your location online and each session should start with the same few sets of numbers.

6. Wikipedia:Blocking IP addresses - Wikipedia

   en.wikipedia.org/.../Wikipedia:Blocking_IP_addresses

   Most IP addresses should not be blocked more than a few hours, since the malicious user will probably move on by the time the block expires. If there is persistent disruption or vandalism from an IP address, the block should be extended (with the 'anon-only' option selected) as long as is necessary to prevent further disruption.

7. How To Find Your IP Address, And Why You Should Know It in ...

   www.aol.com/ip-address-why-know-first-211700667.html

   On a Mac: Apple menu > System Preferences > Network > Select either WiFi or Ethernet, depending on your connection > your IP address is displayed in the open window, right beneath the status of ...