Hello,
I created a droplet 2 months ago and I did the basic things like configuring the firewall, setup ssh to only accept public key auth and stuff. Last night I was inspecting the logs located at /var/log/auth.log and /var/log/ufw.log and I noticed that there are a lot of IPs trying to access telnet, ssh (using brute force with random login names) and there are also some attempt to connect to some random TCP ports.
Should I be worried? Is this “normal” ?
Btw: My firewall is configure to drop all incoming packets (except ssh).
Thank you
This textbox defaults to using Markdown to format your answer.
You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.
You can improve and reduce the attack attempts by:
- Disabling password passed authentication and using RSA SSH keys
- Configurig your firewall and ssh to only allow your IP (you need to have a static IP)
- Using 2FA, for example 2FA of Google
- Changing the SSH port
- Disable root Login via SSH
- Using a software that prevents DDOS attacks like DenyHosts or fail2ban
Want to learn more? Join the DigitalOcean Community!
Join our DigitalOcean community of over a million developers for free! Get help and share knowledge in Q&A, subscribe to topics of interest, and get courses and tools that will help you grow as a developer and scale your project or business.
This is to be expected. Disabling password based authentication in sshd_config makes this a non issue.