Hi Nitish, 

That's quite a wide range of possibilities you've got going, there. We're a technical group, so I think a little more detail might get a bit more interest... At this stage the details are scarce enough that we don't have anything to base any guidance on. 

What webserver are you using? Could you share the config details for it? Any chance you've set up iptables, apparmor, or changed your network configuration lately? 

If you gave us IP information for the host pc and the virtual machine, it would help determine whether the problem is a simple network routing issue; especially if you include results of trying to ping from the host to the VM, and then again from the VM to the host. 

While you're at it, the output of 'netstat -tulpn' from the VM will help show if the server is even listening. 

E

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Q: Why is this email five sentences or less?
A: http://five.sentenc.es



On Mon, 11 Jan 2021, at 14:17, essence networks wrote:
Greetings WLUG!

Loving the discussion here.. 

I am wondering if any linux enthusiasts or freelancers would be interested in looking over my shoulder as I am trying to trouble- shoot my linux host? Am a relatively inexperienced enthusiast of the hands-on variety. I could certainly use your advice!  

Reach me directly on essencenetworks@gmail.com and I can send you my Signal details too.

To migitage being a bore to the less interested.. I will post only  a summary of the problem I am trying to solve. 
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Problem: After a reboot, my webserver process  no longer serves SSL certificates to external browsers.

At the client/browser side  this command: openssl s_client -connect <<MYSERVERNAME>>:443  -msg
reports CONNECTED but there is a handshake failure and so "no peer certificate is available."

Now, this was working perfectly. before a re-boot. (I am using a self-signed SSL cert).

This probably means that the http server does not permit service on the port. As it was working prior, this is probably not a port-mapping or privilege issue. 

I suspect that on reboot the DHCP service  has messed up host addressing but I could be wrong.Probably VirtualBox etc has something to do with it - well outside my depth!

My setup is: I am running the server on my home LAN,.. a VirtualBox VM  (CENTOS/OracleLinux) hosted on a local ArchLinux install running on my old Intel Macbookpro.
Network setup is Home broadband  LAN, typical Class_C home network.
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Been trying various utilities like "nslookup -debug localhost" on the server to understand what is wrong/changed but I don't want to mess up my configuration too much..

Cheers,
Nitish.
essencenetworks@gmail.com
stay safe + well https://covid19.govt.nz









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