Geoffrey Leach wrote:
Two systems A and B, connected via wireless. A and B both have the same
/etc/hosts. Connecting from B to A, "ssh A", works fine. However on A,
"ssh B" logs me into A. This used to work fine; the only clue I have is
that ssh did not like the stored RSA key. I let it fix it, and that's
when the trouble started. Rebooting A did not fix, nor did removing the
saved key and repeating.
Any suggestions?
Thanks.
My best guess:
The stored key issue was symptomatic of the problem resolving host to ip
address incorrectly.
There are three things to check:
1) Logged on at host A, what does 'host B' command return for
information? Is it the correct address for B? If the wrong address
then you need to research whether your dns server or an /etc/hosts entry
is the cause.
2) Whatever user you do this as on host A, is there a ~/.ssh/config
file? And if so, does it have a stanza that defines how to contact host
B, but do so with the wrong name or ip address?
3) It is also possible, but less likely, that on host A you have dnat
rules in iptables causing the endpoint for that ssh tcp connection to be
changed to a local host based address.
Chris
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