Re: Problem with host-based authentication

From: Greg Wooledge (
Date: 11/10/03

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    Date: Mon, 10 Nov 2003 08:13:28 -0500
    To: Mats-Ove Fant <>

    On Sun, Nov 09, 2003 at 03:00:03PM +0100, Mats-Ove Fant wrote:
    > ssh_exchange_identification: Connection closed by remote host

    9 times out of 10 this is caused by libwrap (TCP wrappers). Some
    Linux distributions have "ALL:PARANOID" in /etc/hosts.deny by
    default, which means that any *client* whose IP address cannot be
    resolved to a hostname will be denied. If this is the case, then
    either take out ALL:PARANOID or fix your DNS so that it spits out
    hostnames for all of your client machines (if they're on a LAN).

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