What is the "Group Key Renewal" setting

Discussion in 'General Discussion' started by Frank Mitchell, Jan 12, 2007.

  1. Frank Mitchell

    Frank Mitchell LI Guru Member

    I recently bought a WRT54G version 6 router

    It is wired between my desk top computer and my DSL modem and I want to set the router up to connect wirelessly with my laptop computer.

    During set up, the default Wireless Security setting was...

    Security Mode - WPA Personal
    WPA Algorithm - TKIP
    WPA Shared Key - u3zntuqpxz2rcy09
    Group Key Renewal - 3600 seconds

    I changed the WPA Shared Key to an ASCII password. I don't want this password to keep changing, so I tried to change the Group Key Renewal time setting to zero.

    I got a message complaining that "rekey interval value is out of range [600 - 7200]". So I set it to the maximum 7200 (2 hours).

    Checking the set up next morning I found that the password had not changed.

    Could someone please explain to me what the WPA Shared Key setting is for and what it does?

    How do I keep the password from changing? Is changing the WPA Shared Key to an ASCII password sufficient?

  2. hd7544

    hd7544 Network Guru Member

    The password is what determines the key. The key changes at the set interval based on the algorithm chosen. The password never changes.
  3. Frank Mitchell

    Frank Mitchell LI Guru Member

    Thanks for your reply.

    So was I incorrect in typing the ASCII password into the WPA Shared Key field?

    If so, where should I type it?

  4. Frank Mitchell

    Frank Mitchell LI Guru Member

    So the router changes the key every 'renewal' seconds. I imagine that's a nifty feature if absolutely every other interface on the network is also made by LinkSys. Now, what are you supposed to do when they are not?
  5. pablito

    pablito Network Guru Member

    WPA is a "standard" that all cards that support WPA will work with. The key changing is part of the protocol and not a Linksys specific thing. no worries if you have other brands...
  6. Frank Mitchell

    Frank Mitchell LI Guru Member

    So let me make sure I understand this: the passphrase I type in is the same as the passphrase I type into my computer, or any other network device; and the key and expiration time the LinkSys router shows me is a peek into the guts of a system that I can't control and don't need for any purpose -- a case of Too Much Information. Is that accurate?
  7. Toxic

    Toxic Administrator Staff Member

    the passkey stays the same in WPA/WPA2 for ALL devices.
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