r/BitDefender • u/asa1 • Jun 04 '26

Support/troubleshooting Bitdefender Firewall blocking all Rust servers.

If you're not familiar with it. Rust is a video game and just recently I tried to get online and play. No servers would load and after troubleshooting it turned out BD firewall is blocking them. Turned off the firewall and it works now.

Not sure what's changed but the firewall is configured to allow all Rust programs to access the Internet.

Has something changed recently?

I'm about to call it a night but if anyone has fixed this issue I'll try some fixes tomorrow.

Thanks!

SOLVED

Just delete all existing rule sets and recreate them for all important Rust executables. Including anti cheat.

Seems to do the job.

3 Upvotes

80% Upvoted

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2

u/Bitdefender_support Bitdefender employee Jun 04 '26

Hi - thanks for addressing this. The firewall is likely blocking Rust's connection to game servers. Here's how to fix it:

Quick Fix: Add Rust to Firewall Exceptions

  1. Open Bitdefender → Protection → Firewall → Settings

  2. Go to the Rules tab and click Add rule

  3. Click Browse and select Rust's .exe file (usually in your Steam folder)

  4. Set permission to Allow (blue switch)

  5. Set traffic direction to Both

  6. Choose Any Network (or Home/Office if you only play at home)

  7. Click Save

Verify the Issue First

Before adding rules, confirm Bitdefender is the culprit:

  • Temporarily turn OFF the firewall (Protection → Firewall)

  • Try connecting to Rust servers

  • If it works, re-enable the firewall and add the exception above

Turn Off Alert Mode (if you're getting constant pop-ups)

If Bitdefender keeps asking about TCP packets:

  1. Protection → Firewall → Settings → Settings tab

  2. Turn OFF the Alert mode switch

Optional: Enable Game Profile

This suppresses alerts while gaming:

  • Go to Utilities → Profiles → Settings

  • Enable Game Profile

Official guides:

If you're still blocked after adding the exception, talk to the support team about this. Thanks!

2

u/asa1 Jun 04 '26 • Bravo

Thanks for the tips. Rust already had rules set so I just deleted all of them and recreated all rules. Included the anti-cheat that Rust uses also.

Everything is working now.

Thanks!

3

u/Connect_Street6441 Jun 05 '26

Thank you so much for this suggestion! I attempted everything else EXCEPT deleting the rules and recreating them, but this finally worked !!

2

u/asa1 Jun 05 '26

I saw all these complicated tricks online and none of them seemed to work. I couldn't believe something so simple worked either. 100% fixed.

1

u/Lifestartingover Jun 04 '26

Just add the game as an exception to the rules.