[Beowulf] A careful exploit?

[Robert G. Brown]

On Fri, 14 Jun 2019, Jonathan Engwall wrote:

> Robert Brown,You never saw this?

I did, and my extensive reply (which you apparently didn't see, but
which is likely in the beowulf list archives?) basically boils down to:

We need a LOT more information about your problem to be able to help.
The nmap scan below doesn't really tell me anything at all except that
yeah, some hosts are down.

Look in the archives and you can probably find it.

     rgb

> 
> On Sun, Jun 9, 2019, 1:41 PM Jonathan Engwall
> <engwalljonathanthereal at gmail.com> wrote:
>       Hello Beowulf,
> Recently we had serious trouble with the internet. A technician had to
> climb the pole. Another technician, an IT specialist in Mexico City,
> could not resolve the issue, sent the man here.
> Now trouble is back. What does this mean? Where are the missing IPs?
> From the pole to the modem, to my repeater, to my machine, and then my
> VM gives this using nmap:
> 
> Starting Nmap 6.40 ( http://nmap.org ) at 2019-06-09 13:30 PDT
> Initiating Ping Scan at 13:30
> Scanning 256 hosts [2 ports/host]
> Completed Ping Scan at 13:31, 6.64s elapsed (256 total hosts)
> Initiating Parallel DNS resolution of 256 hosts. at 13:31
> Completed Parallel DNS resolution of 256 hosts. at 13:31, 0.04s
> elapsed
> Nmap scan report for 192.168.0.0 [host down]
> Nmap scan report for 192.168.0.1
> Host is up (0.0080s latency).
> Nmap scan report for 192.168.0.2
> Host is up (0.00068s latency).
> Nmap scan report for 192.168.0.3 [host down]
> Nmap scan report for 192.168.0.4 [host down]
> Nmap scan report for 192.168.0.5
> Host is up (0.063s latency).
> Nmap scan report for 192.168.0.6
> Host is up (0.00068s latency).
> Nmap scan report for 192.168.0.7 [host down]
> Nmap scan report for 192.168.0.8 [host down]
> Nmap scan report for 192.168.0.9 [host down]
> Nmap scan report for 192.168.0.10 [host down]
> Nmap scan report for 192.168.0.11 [host down]
> 
> 
>

Robert G. Brown	                       http://www.phy.duke.edu/~rgb/
Duke University Dept. of Physics, Box 90305
Durham, N.C. 27708-0305
Phone: 1-919-660-2567  Fax: 919-660-2525     email:rgb at phy.duke.edu