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Internet, Networking, and Wireless
Strange Console Log??
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<blockquote data-quote="IvanLasston" data-source="post: 1285321" data-attributes="member: 145676"><p>It may not be nefarious - especially if you have a lot of devices attaching through dhcp. That being said - it is weird that it is your hardwired iMac that had to defend the dhcp lease. Usually it is because a computer leaves, the dhcp gets assigned to something else, then the computer comes back and tries to renew the lease.</p><p></p><p>First - WEP does nothing for security so it is good you changed to WPA2 - you still need a strong password (long, mix of characters) as there are brute force methods to try to break WPA2. </p><p></p><p>Lastly - you could go through your known devices and see if you can find d8<img src="/images/smilies/angel.gif" class="smilie" loading="lazy" alt=":a" title="Angel :a" data-shortname=":a" />2:5e:c6:9f:4f - I actually have MAC address filtering on for this reason. Then I have a list of all devices that I know I allow on my network. MAC address filtering doesn't really do anything for security by itself because it is easy to spoof a Mac address, but if someone tries to hop on then I have an easy to see list, right on my router, to compare against the log files. Then it also becomes obvious someone is spoofing as you will see a log similar to what you saw - where the router will be trying to assign the same dhcp address to 2 of the same MAC addresses.</p></blockquote><p></p>
[QUOTE="IvanLasston, post: 1285321, member: 145676"] It may not be nefarious - especially if you have a lot of devices attaching through dhcp. That being said - it is weird that it is your hardwired iMac that had to defend the dhcp lease. Usually it is because a computer leaves, the dhcp gets assigned to something else, then the computer comes back and tries to renew the lease. First - WEP does nothing for security so it is good you changed to WPA2 - you still need a strong password (long, mix of characters) as there are brute force methods to try to break WPA2. Lastly - you could go through your known devices and see if you can find d8:a2:5e:c6:9f:4f - I actually have MAC address filtering on for this reason. Then I have a list of all devices that I know I allow on my network. MAC address filtering doesn't really do anything for security by itself because it is easy to spoof a Mac address, but if someone tries to hop on then I have an easy to see list, right on my router, to compare against the log files. Then it also becomes obvious someone is spoofing as you will see a log similar to what you saw - where the router will be trying to assign the same dhcp address to 2 of the same MAC addresses. [/QUOTE]
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