On Fri, Mar 25, 2022 at 8:25 PM Ed Greshko <ed.gres...@greshko.com> wrote:

> On 26/03/2022 10:29, Jack Craig wrote:
> >
> >
> >
> > i have a networking mystery ; i hope someone might give me a clue.
> >
> > i am working to restore a web server to internet access that is failing
> after att update
> > the att older modem (pace 5238ac) with arris BGW210-700.
> >
> > i have a static ip from att in the range 108.220.213.0/255.255.255.248 <
> http://108.220.213.0/255.255.255.248>, 108.220.213.121 is the external ip
> for the server.
> >
> > the bgw210-700 is the primary router/modem and is connected to a 3rd
> party router, netgear nighthawk,
> >
> > the internal 10.0.0.0/ <http://10.0.0.0/>  connects to the netgear
> nighthawk
> >
> > ATT's broadband configuration is
> >
> >  Blackhole-ATT (wireless name)
> >
> >    Broadband connection source      DSL
> >    Broadband connection             up
> >    Broadband network type           lightspeed
> >    Broadband ipv4 address           108.90.204.76
> >    Broadband gateway address        108.90.204.1
> >
> >
> > outbound packets from the server (WS), are routed from the 10.0.0.1
> nighthawk to the ATT router to the internet.
> >
> > the 108.90.204.0 network routing from the att router to the att's
> gateway. .76 is the router, .1 is the GW.
> >
> > sample route, ...
> >
> > 10.0.0.101 ws.linuxlighthouse.com <http://ws.linuxlighthouse.com>
> (internal IP) 2 packets transmitted, 2 received, 0% packet loss, time 1033ms
> > 10.0.0.1                           Blackhole-NH           2 packets
> transmitted, 2 received, 0% packet loss, time 1018ms
> > 192.168.1.254                 Blackhole-ATT      2 packets transmitted,
> 2 received, 0% packet loss, time 1001ms
> > 108.90.204.76             att subnet (local router)  2 packets
> transmitted, 2 received, 0% packet loss, time 1002ms
> > 108.90.204.1            att subnet (remote GW)               2 packets
> transmitted, 2 received, 0% packet loss, time 1001ms
> > 108.220.213.121 ws.linuxlighthouse.com <http://ws.linuxlighthouse.com>
> (public IP) 2 packets transmitted, 2 received, 0% packet loss, time 1001ms
> > 108.220.213.126   linuxlighthouse (public GW)          2 packets
> transmitted, 2 received, 0% packet loss, time 1001ms
> >
> Sounds like 108.90.204.76 is missing routes. I'm assuming that
> 108.220.213.121 previously answered pings
> and originally was the final destination of an external traceroute.
>

i was not seeing a way to add att rtr to have new  routes.

>
> [egreshko@meimei ~]$ traceroute 108.220.213.121
> traceroute to 108.220.213.121 (108.220.213.121), 30 hops max, 60 byte
> packets
>   1  _gateway (192.168.1.1)  0.434 ms  0.728 ms  0.681 ms
>   2  * * *
>   3  tpdt-3308.hinet.net (168.95.82.198)  23.574 ms  23.530 ms 23.451 ms
>   4  tpdb-3031.hinet.net (220.128.1.102)  7.827 ms
> 220-128-1-50.hinet-ip.hinet.net (220.128.1.50)  7.210 ms
> tpdt-3032.hinet.net (220.128.27.94)  7.386 ms
>   5  r4102-s2.tp.hinet.net (220.128.7.69)  7.123 ms r4102-s2.tp.hinet.net
> (220.128.14.93)  7.296 ms r4102-s2.tp.hinet.net (220.128.13.93)  7.252 ms
>   6  r4002-s2.tp.hinet.net (220.128.6.85)  7.538 ms r4002-s2.tp.hinet.net
> (220.128.6.81)  6.710 ms  6.656 ms
>   7  pa-r32.us.hinet.net (202.39.91.29)  133.962 ms  132.083 ms 132.075 ms
>   8  32.141.85.13 (32.141.85.13)  133.458 ms  133.358 ms  133.297 ms
>   9  12.123.242.38 (12.123.242.38)  138.066 ms  137.303 ms  139.959 ms
> 10  12.122.149.225 (12.122.149.225)  143.022 ms  137.567 ms  137.573 ms
> 11  12.122.158.25 (12.122.158.25)  138.446 ms  137.435 ms  138.346 ms
> 12  * * *
> 13  99.134.39.24 (99.134.39.24)  136.686 ms  136.506 ms *
> 14  99.134.39.11 (99.134.39.11)  136.191 ms  136.211 ms  136.066 ms
> 15  99.161.44.77 (99.161.44.77)  137.461 ms  137.438 ms  138.025 ms
> 16  108-90-204-76.lightspeed.mtryca.sbcglobal.net (108.90.204.76) 157.627
> ms  157.580 ms  157.980 ms
> 17  * * *
> 18  * * *
> 19  * * *
> 20  * * *
> 21  * * *
> 22  * * *
> 23  * * *
> 24  * * *
> 25  * * *
> 26  * * *
> 27  * * *
> 28  * * *
> 29  * * *
> 30  * * *
>
> Remember if a server that should be visible externally, but isn't. Then
> outbound requests/replies will also fail.
>
my server is pingable at 10.0.0.101 & 108.220.213.121.

this with & without firewalld

>
> --
> Did 황준호 die?
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