[ale] traceroute

[DJ-Pfulio]

Is ssh host validation set to strict?

On 02/23/16 15:33, Jim Kinney wrote:
> correct me if I'm wrong, please.
> 
> A VM on a host is networked and can ping outside the LAN, be connected
> to over ssh from inside the LAN (firewall blocks outside to inside
> connection) and can connect to another VM on the same host. Other
> physical machines in the same rack can connect to the second VM as well
> as the first by any method allowed by the second VM.
> 
> HOWEVER, from my office, I can't connect to the second VM but I can
> connect to the first VM. Both are on the same physical host. I can
> connect to all the other physical and VM in the racks from each other
> and from my office. There are 3 VM exceptions and all three are either
> new with new static IPs or recycling an old static IP (with a guarantee
> the orginal host with the old IP is dead and gone - deleted the VM of a
> second physical host.
> 
> All connections that succeed do so by both IP and name. All connections
> that fail do so by both IP and name. All names resolve correctly. All
> unreachable VMs can connect to systems outside the LAN by name and by
> IP. The public facing IP they have is valid. The netmask is correct as
> is the gateway.
> 
> The traceroute from my office to a working VM completes in 4 hops with
> the 4th being the VM itself. But to the non-working VMs it fails after 3. 
> 
> The failure point then must be the last router in the traceroute, i.e.
> the one that shows up last followed by 27 rows of *'s.
> 
> I get exactly the same behavior tracing from a machine elsewhere in the LAN.
> 
> The new VM that can't be connected to is the new user authentication
> machine. Kind of important.
> 
> -- 
> James P. Kinney III
> 
> Every time you stop a school, you will have to build a jail. What you
> gain at one end you lose at the other. It's like feeding a dog on his
> own tail. It won't fatten the dog.
> - Speech 11/23/1900 Mark Twain
> 
> http://heretothereideas.blogspot.com/
> 
> 
> 
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