My internet connection has been acting strange recently, which has brought up some questions I'd like to ask. Can someone help me answer them? I have a few computers on the network/router.
1) Recently I had a computer show a 'yellow-exclamation' symbol over the 'wired connection' symbol, then automatically disappeared soon after. I've ran across this quite a few times in the past. I'm wondering if this could be related to something malicious on the system, and/or whether it may affect the connections of others on the network?
2) Recently my wireless connections went out, but the wired connections appeared normal. After rebooting the router, one of the computers was given an error message: "Windows-System error--There is an IP address conflict with another system on the network". I put it to sleep because I had a feeling it would be assigned a new IP address when it wakes up. I eventually checked this to make sure, and each had their own address. If it had stayed (for hours or days) on the same IP address as another computer, would that have been a problem or potential risk to either system?
3) I notice a wireless device on my network that I don't recognize. It doesn't have any IP address or device name assigned to it, just a MAC address. I have a feeling this is normal (not an intruder), but I do not know what it is. The only device that should be acting as a wireless device is the computer I'm typing this on; my smartphone is using a mobile data network.
4) My router gives off two different Wireless Network Connections. One of them has a 2.4Ghz speed, and another has a 5Ghz speed. I have never connected to the 5Ghz one, but is there any benefit to doing so? My laptop sees it, but the connection normally appears weaker in strength than the full 2.4Ghz connection I'm using.
5) Let's pretend someone has hacked into a computer, does rebooting the router lose track of them? I'm asking this because I'd like to understand why rebooting is a suggested solution to networking problems.
Edited by Double44, 16 December 2013 - 10:35 AM.