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Security and Restoring SSH

ASICseer takes security seriously and hopes to achieve the Bitmain© vision for true operational security. Bitmain© recently released SSH-disabling security firmwares. Our company applauds Bitmain© for taking into account aftermarket security concerns and for protecting their customers.

To restore SSH after installing these firmwares and to prevent unauthorized logins, follow the below instructions.

For March/May/June 2019 Firmware

Download and prepare asicseer_secure_ssh version 1.0.5

Run ./asicseer_secure_ssh --help to get a list of all available options.

Linux x86_x64

  1. Download the x86_x64 Linux version of asicseer_secure_ssh to a linux box local to your ASIC network.
    curl -L -o asicseer_secure_ssh https://install.asicseer.com/download/asicseer_secure_ssh
  2. Optional: Run sha256sum asicseer_secure_ssh to verify it against sha256sum hash at the bottom of this page.
  3. Run chmod +x asicseer_secure_ssh to make the program executable.

Windows 10

  1. Download the Windows 10 version of asicseer_secure_ssh.exe
  2. Start -> Search -> type cmd
  3. Right-Click on Command Prompt and click "Run as Administrator"
  4. cd C:\Users\yourname\Downloads (or wherever you downloaded asicseer_secure_ssh.exe)

NOTE: If you are using Windows 10, use asicseer_secure_ssh.exe instead of ./asicseer_secure_ssh in the below examples.

For a Single ASIC

  1. Run ./asicseer_secure_ssh -p ip.of.restricted.asic WEBUIPASS (WEBUIPASS is usually root)

For Multiple ASICs

  1. Create a file parallel to asicseer_secure_ssh called iplist.txt and add your list of to-be-unlocked ASIC IPs (separated by newlines).
  2. Run ./asicseer_secure_ssh -p --iplist iplist.txt WEBUIPASS (WEBUIPASS is usually root)

Fixing curl

If curl is not working on your ASIC, you can reinstall curl with the -c -f flags (example):

./asicseer_secure_ssh -c -f ip.of.restricted.asic WEBUIPASS

For July 2019 and Later Firmware

Use the Bitmain© Control Board Program Recovery with Bitmain© Stock Firmware.

NOTE: Be careful, any Bitmain© firmware described as having a "security" or "secure" firmware actually prevents SSH to your ASIC.

Now that SSH is restored, proceed with Securing your ASIC with Passwordless Login and Public Key.

NOTE: We advise against installing so-called  exploits and other unverified executables from questionable sources, and/or allowing others access to your network. When sharing this program, link only to this page: https://asicseer.com/page/security-restoring-ssh as it has the following security features:

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