[nmglug] SSH problem

[Bill York]

it's a new host on an existing subnet. i can ssh into the new host from
other hosts on the same subnet.

route's not a problem. i can even ping that host from my workstation. the
host sees connection attempts from my workstation - it just ignores them.
but it answers ssh just fine from its own subnet.

aargh.

On Fri, Mar 21, 2008 at 10:56 AM, Todd Richardson <trichardson at cvecoop.org>
wrote:

> I'm 0 for 10 on my network troubleshooting this week, but here goes:
>
> Depending on how you set your network up, you may have an incorrect
> route between the two machines.
>
> A bit more background may help resolve the problem.  Is this a
> completely new subnet, or is it just a new host on an established subnet
> in your network?
>
> This is what happened to me earlier this week on a virtual machine
> behind a virtual router connected to my main network. Basically, I had
> setup the incorrect gateway on the virtual router, so that My actual
> router was sending the packets (good enough for ping) but the virtual
> router was basically black-holing the packets from the remote machine.
>
> I wish I knew more about open-ssh to answer your second question.  I
> would think that you would at least get a connection refused if it is
> configured to allow local subnet, but I simply don't know for sure.
>
> -Todd Richardson
>
> On Fri, 2008-03-21 at 10:28 -0600, Bill York wrote:
> > Hi all,
> >
> > I'm having an issue getting to a new host over ssh. I can get in to it
> > on the local network, but not from a remote network. The network based
> > firewalls are not an issue as I can get into other hosts on the same
> > network. iptables is not an issue since i've temporarily disabled it.
> >
> > a tcpdump on the remote host shows connection attemps, but no acks.
> >
> > is it possible to configure ssh to not respond to requests from
> > outside the local subnet?
> >
> > OS: fedora core 8
> >
> > bill
> > _______________________________________________
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> > nmglug at nmglug.org
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>
>
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