Rusty,

I was unable to SSH into my desktop from a new Ubuntu VirtualBox guest 
this morning.  Was able to ping.  Have not had the time to resolve.

My response is to your mentioning AI.  I use the free version of 
ChatGPT.  It is version 3.5   It responds to normal language.  Ask it a 
question like you would ask me. Then refine your question based on what 
it's response is.

I just went to https://chatgpt.com/ and did not sign in and asked "Why 
do I get an error when trying to SSH into my kubuntu desktop from a 
ubuntu 24.04 server running on VirtualBox.  I an ping."  Notice I 
misspelled can at the very end.

These questions are called prompts. And are regular English.

I got a ton of information... And I can continue to refine my question.  
In this case it looks like this is all I might need.

I created a YouTube video on using AI to create PHP programs :  
https://youtu.be/k7CNqcKxKTg

Keith






On 2024-07-09 15:07, Rusty Carruth via PLUG-discuss wrote:
> Hopefully the answer isn't that *I'm* the insane one! ;-)
> 
> So, my laptop, which is running Linux Mint 20.2 Uma, and my file server 
> have suddenly had a falling-out.  They used to talk to each other just 
> fine, but now the file server, running Linux Mint 19.3 Tricia, slams my 
> laptop into the deny list as soon as I try to SSH in to it.  And I 
> don't (believe I have) automatic update enabled on either computer, and 
> I certainly don't remember doing anything to the laptop or the server 
> related to networking.  The laptop has an NFS connection to the file 
> server - or it HAD before the blocking!
> 
> 
> The file server has no problem ssh-ing to the laptop (no surprise 
> there, of course).
> 
> 
> Initially I thought it was some problem with port 161, but I added that 
> (and the laptop IP address!) in to the portsenty ignore file, and it 
> still got flagged.
> 
> 
> It isn't in hosts.deny, nor is it in the portsentry bad guys list.
> 
> 
> I looked (find /etc -type f -print0|xargs -0 egrep <laptopIPaddr>') on 
> the file server:
> 
> Tue Jul 09 14:02:30 RustyC ~ $ cat /tmp/finding.laptop
> /etc/portsentry/portsentry.ignore.static:myLaptopIP
> /etc/portsentry/portsentry.ignore:myLaptopIP
> /etc/portsentry/portsentry.ignore.static~:myLaptopIP
> Tue Jul 09 14:05:59 RustyC ~ $
> 
> (I hacked the local IP to the string 'myLaptopIP'.  What is actually 
> there is the actual IP addr).
> 
> 
> So, I removed (uninstalled) portsentry from the file server, rebooted, 
> and tried again.  Still blocked!  Waited about a day, still blocked.  
> So, I changed the IP address of the laptop - the server blocks the 
> laptop!
> 
> Just for fun, I changed my laptop's IP again and tried mounting the 
> file server via NFS, without doing anything else (no attempt to ssh, 
> etc) - blocked, as far as I can tell.  BUT!  I can still ping the file 
> server from the laptop!
> 
> Checked iptables - NOTHING in any table on the server.  I'm totally 
> stumped, and about to re-install Linux on both the Laptop and the file 
> server.  (One of these days I hope to get time to fool with AI for this 
> kind of thing, but haven't yet had the time...)
> 
> Does anyone have any ideas?  Thanks!
> 
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