certificate problems after storm

Discussion in 'Cisco/Linksys Wireless Routers' started by Dr_M, Jul 17, 2005.

  1. Dr_M

    Dr_M Guest

    I have a little problem. I was chatting about that with Linksys on-line help, but they didn't answer for my question. So perhaps you will know what has happend. But let me start froem beginning.
    Last night, there was storm with thunders. And for about 4 or 5 seconds power has been lost. After that time power returned and router got up. Made his inside tests and worked just as before. That router is Linksys WRT54GS ver1.1. Everything was fine, until I tried to log into my router(I'm using https connection). When I typed the router's IP my browser send me this:
    "Browser received incorrect certificate. You should contact with server administartor or person, who set up that certificate and ask her to receive correct one".
    I'm using to contact with my router https connection. So I'm curious how is that possible, that before the storm router has one certificate, and right after that power down and back, it has other certificate?
    I thought that there is some mistake in memory, so I have restarted my router. But that didn't solve my problem. So perhaps somebody of you know what the hell is going on? I teach my browsers to accept new one but that isn't the way. I just want to know what is going on, and how the new certificate appeared? Becouse nothing as far as I know had changed after that. Oh, and when I tried to load backed up setup of my router - it finished by pushing the reset button on back of the router. So everything had to be retyped again - that is not a problem. But why restore didn't work?
    I would be greatfull for any answers,
    best regards
  2. SimonMackay

    SimonMackay Network Guru Member


    I often suspect that the "private key" aspect of the https certificate has been ruined by the storm. I would suggest having to "start from scratch" by resetting the router. Before you do this, make sure you have the login details for your ISP to use with the WRT54G's WAN login client.

    Then reset the unit and login using the "raw" default parameters (password=admin, URL= , SSID=linksys). Set up the WAN login params for your Internet service then change the user password, wireless network SSID and WEP /WPA key. You may have to rebuild the wireless MAC filter list from scratch.

    After all this is done, back up the configuration details to your PC and move them to some removeable media (flash memory, USB flash drive, floppy disk, Hi-MD MiniDisc) which should be stored securely. Then set up for https login again. The system will work on a new certificate pair and issue a new public-key certificate.

    You may also have to "flush" the public-key certificate cache. In Internet Explorer, this may involve going in to Tools-Internet Options, then click on the "Content" tab. Click on "Clear SSL State" to flush out client certificates so that the system draws down new public-key certificates for each SSL (https) site. The method will be different for Netscape, Mozilla Firefox, or other browsers. This should be tried first before you decide to reset your router.

    With regards,

    Simon Mackay
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