On 08/31/2018 10:41 PM, David Christensen wrote:
On 08/31/2018 12:50 PM, Stephen P. Molnar wrote:
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.
Running nslookup(1):
2018-08-31 18:53:21 dpchrist@vstretch ~
$ nslookup 162.237.98.238
Server: 192.168.5.1
Address: 192.168.5.1#53
Non-authoritative answer:
238.98.237.162.in-addr.arpa name =
162-237-98-238.lightspeed.clmboh.sbcglobal.net.
Authoritative answers can be found from:
Running host(1):
2018-08-31 18:58:15 dpchrist@vstretch ~
$ host 162.237.98.238
238.98.237.162.in-addr.arpa domain name pointer
162-237-98-238.lightspeed.clmboh.sbcglobal.net.
162.237.98.238 appears to be a valid IPv4 public Internet address.
You should have a device provided by your Internet service provider
(ISP) between their wiring (e.g. telephone service) and your wiring
(e.g. Ethernet local area network/LAN). What is the make and model of
the ISP device? Please provide a URL to the product support page.
What are the "other four nodes"?
How is everything interconnected?
David
Thanks for your reply.
ISO device is an Arris BGE210-700 Broadband Gateway Release 1.0 from
AT&T (http://www.arris.com/Search/?q=Arris+BGE210-700+Broadband+Gateway)
Wired Connections: 2 Desktops, printer and VOIP telephone
Wireless Connections: Laptop and two Android Smartphones
root@AbNormal:/home/comp# nslookup
> nslookup -a
Server: 192.168.1.254
Address: 192.168.1.254#53
Non-authoritative answer:
Name: nslookup
Address: 198.105.244.130
Name: nslookup
Address: 104.239.207.44
>
> host
Server: 192.168.1.254
Address: 192.168.1.254#53
Non-authoritative answer:
*** Can't find host: No answer
>
--
Stephen P. Molnar, Ph.D.
Consultant
www.molecular-modeling.net
(614)312-7528 (c)
Skype: smolnar1
