I have a friend who has a linksys wireless router and is having problems with getting internet. Is there any way a wireless router can get a virus?
While it's possible that a router can get a virus, it's very unlikely (in the realm of winning the lottery or falling off a donkey).
Your friend's router may need attention from a professional. Have the ISP check it out or see if you can get a replacement.
If you know what problems it's having, maybe we can help here. For that, we need a lot of information about the router and what you've tried.
EDIT: Resetting the router to factory defaults will eliminate any configuration issues or corruption (including alleged viruses), if you need to prove a point.
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While not technically a virus, router poisoning could occur. If a malicious agent gains access to a router, it could change the default DNS to a malicious server that can then redirect your traffic however it sees fit.
But like Randolph has stated, Resetting to factory defaults should eliminate any issues.
We had that happen to our Linkseye wireless router yesterday when we went to hook up a friend's laptop to our router to look up problems they were having in linking to the internet.
It immediately affected all our connected devices and it would not allow us to get back online – only to the CISCO router site. The friend's laptop evidently reconfigured our router but we couldn't get it to go back to factory defaults. We tried to press reset and reinstall the CD but nothing would happen.
Talking to their tech support – it allowed online chat – they offered to correct it for a fee (because I had gone past their 90 day warranty) so we declined and went out and bought a different brand router and re-established internet connection.
I am currently trying to use Norton to clean anything which may have contaminated our devices – but how can this friend's laptop be cleaned? I will not try to hook it back up through our router system again.