Notes                                        
** 2/21/26   Networking    
      Notes    
                                           
   
  Home from the Gemini conversation: Samba Share Connection Troubleshooting
  h_hh_ll Symptom Likely Cause Fix
  Linux "Check spelling" immediately Networking/Firewall Ping the IP; check ufw
  Windows The "Ping -t" Diagnostic Long delay, then error Hostname resolution Use IP address instead of name
  Notes To see the blockage in real-time: Prompts for password, then fails Samba Password sudo smbpasswd -a user
  Template On Windows, open a command prompt and type: ping -t 100.x.y.z (the Debian Tailscale IP). "Access Denied" after login Linux Permissions chown the directory
    While that is running, go back to your Debian terminal and run: sudo tcpdump -i tailscale0 icmp.
    If you see pings in tcpdump but NOT port 445: The network is fine, but a firewall (likely Windows) is specifically targeting and killing SMB traffic.
    If you see neither: The Tailscale tunnel itself is restricted.
    After switching the Windows Tailscale profile to "Private," does the tcpdump -i tailscale0 port 445 command start showing any text?