Re: how to detect hack attempts.

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On Fri, 2020-02-21 at 13:15 -0700, home user wrote:
> (On 2020-0221 10:51pm, Ed wrote)
>  > BTW, if you do an "ip -6 add show eno1"
>  > do the numbers a358:d643 appear in the output?
> 
> -bash.1[~]: ip -6 add show eno1
> 2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
> state 
> UP group default qlen 1000
>      inet6 2001:558:6040:5d:9d66:dfa1:a358:d643/128 scope global
> dynamic 
> noprefixroute
>         valid_lft 342949sec preferred_lft 342949sec
>      inet6 fe80::3285:a9ff:fe97:537e/64 scope link noprefixroute
>         valid_lft forever preferred_lft forever
> -bash.2[~]:
> 
> So the answer is yes.
> 
> (responding to related comments)
> (Samuel (11:19pm))
>  > But most people don't realize that their ISP modem is also a
> router.
> I don't think my modem is also a router, but I'm not sure.  It's an 
> Arris model TM822G, self-purchased (not rented from the ISP).  
> 

What kind of IPv4-address do you get? The public IP or an RFC1918
(192.168.x.y or 10.x.y.z or 172.16.x.y): if it is the public IP the
modem likely does not do the firewall as it does not do NAT. 
A quick check of the Arris manual seems to suggest that it does not
have a firewall and it seems to handout ISP addresses  directly.


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