Strange Network Problem

["Stephen P. Molnar" <s.molnar@sbcglobal.net>]

I am running Debian Stretch on my Linux platform.

I have noticed low internet traffic when I have not been doing anything 
outside of my LAN.  This has made me a tad suspicious.

Now:

root@AbNormal:/home/comp# ifconfig
enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 162.237.98.238  netmask 255.255.252.0  broadcast 
162.237.99.255
        ether bc:ee:7b:5e:83:36  txqueuelen 1000  (Ethernet)
        RX packets 796401  bytes 529829454 (505.2 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 236054  bytes 22520861 (21.4 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        loop  txqueuelen 1  (Local Loopback)
        RX packets 399  bytes 42360 (41.3 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 399  bytes 42360 (41.3 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


It turns out that this ISP, 162.237.98.238 is my ISP, AT&T here in 
Columbus, Ohio.

The other four nodes on my LAn all have IP's starting with 192.168.1 - 
which is what it's supposed to be.

Just what is going on here? I don't have a clue.

I dop have firewalls implemented on both the modem and the computers.

Any insights will be much appreciated.

Thanks in advance.

--
Stephen P. Molnar, Ph.D.
Consultant
www.molecular-modeling.net
(614)312-7528 (c)
Skype: smolnar1