Re: [CentOS] [OT] rsa host key change

2009-04-17 Thread Phil Schaffner
Bill Campbell wrote:
...
> That would make me very suspicious that the box had been cracked,
> and that a foreign sshd had been substituted for the real one.
> 
> rpm -V is your friend.

Also rkhunter and chkrootkit.
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Re: [CentOS] [OT] rsa host key change

2009-04-16 Thread Bill Campbell
On Thu, Apr 16, 2009, Ed Donahue wrote:
>Anyone ever come across a linux server host key changing with out a
>reboot, sshd restart, change in negotiating (SSHv1, SSHv2), and
>different DNS name or IP address?

That would make me very suspicious that the box had been cracked,
and that a foreign sshd had been substituted for the real one.

rpm -V is your friend.

Bill
-- 
INTERNET:   b...@celestial.com  Bill Campbell; Celestial Software LLC
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DOS: n., A small annoying boot virus that causes random spontaneous system
 crashes, usually just before saving a massive project.  Easily cured by
 UNIX.  See also MS-DOS, IBM-DOS, DR-DOS.
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[CentOS] [OT] rsa host key change

2009-04-16 Thread Ed Donahue
Anyone ever come across a linux server host key changing with out a
reboot, sshd restart, change in negotiating (SSHv1, SSHv2), and
different DNS name or IP address?

I have a server on RHEL4.4 that changed its host key.
Red Hat Enterprise Linux ES release 4 (Nahant Update 4)

openssh-server-3.9p1-8.RHEL4.15
2.6.9-42.ELsmp

uptime 944 days

Started getting the eavesdropping message from a login that is
supposed to login w/o a password.
And always did before today.
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