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Re: Strange Network Problem




On 2018-08-31 20:50, 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.

well ifconfig should report the internal private address of its NIC but seems to be showing the external address range of the router. Could this be anything to do with the router being in bridge mode which is something I'm not entirely clear about.

mick


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