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Re: Can surf the internet, but not my home network...



On 9/15/21 7:41 AM, nimrod wrote:
Hi,

my devices (pc, laptops, smartphone) all can surf the internet without
problems. So one would say that the router is working properly.

But computer A cannot access computer B via SSH as it's alwais being
doing for years, and viceversa. They cannot even ping each other. No
firewall on them at all.

Computer A can ping computer C instead, and viceversa. No PC can access
the printer website nor print any more. Nor can I scan documents as I
could before, because the scanner is part of the printer.

All the devices are listed in the router's web administrative
interface, but some have a green dot, some other a grey dot, apparently
without a meaning, because some active device has the grey dot and some
the green dot though it's even turned off.

Just one PC is running Windows, all the other three are running Debian.

Another interesting fact is that I can print documents with my
smartphone accessing the printer via DirectWiFi. If I understand it
right, DirectWiFi doesn't make use of the router.

And here is the router info:
Product Vendor: Technicolor
Product Name: AGHP
Serial Number: CP1911TAAWE
Software Version: 19.4

Such devices, usually distributed by TIM in Italy, don't seem the most
performing on the market, but it's still very difficult to use another
one with most italian providers. Otherwise I would change it
immediately with a better and customizable one.

I really cannot figure out what's happening.

Any hint would be very much appreciated.


Please install Cygwin on Windows:

    https://www.cygwin.com/

This will give you a Bash shell. You can install additional software, such as an SSH client and an SSH server (the latter may require opening port 22 in the Windows firewall).


Please use a Bash shell and add the following line to ".profile" or ".bash_profile":

    export PS1='\n\D{%Y-%m-%d %H:%M:%S} '${USER}'@\h \w\n\$ '


The best way to convey system administration information is to cut and paste complete console stanzas -- prompt, command entered, and output displayed.


A still camera and/or video camera are useful for capturing screens when a terminal is unavailable, such as POST messages, CMOS setup programs, and GUI interfaces. Transcribe to plain test for post, or put the photos/ video on a file sharing site.


It is wise to delete sensitive information from console stanzas before posting on the Internet. Please denote deletions with "...", "<snip>", "********', "REDACTED, etc..


The following stanza is a good way to start a conversation about Debian:

2021-09-15 12:33:02 dpchrist@dipsy ~
$ cat /etc/debian_version ; uname -a
10.10
Linux dipsy 4.19.0-17-amd64 #1 SMP Debian 4.19.194-3 (2021-07-18) x86_64 GNU/Linux


The following stanza is a good way to start a conversation about Windows:

2021-09-15 12:37:52 dpchrist@win7 ~
$ uname -a
CYGWIN_NT-6.1 win7 3.1.7(0.340/5/3) 2020-08-22 17:48 x86_64 Cygwin


Then add stanzas that demonstrate whatever issue you are having.


David


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