Crown Node Manager Beta

Crown Node Manager (CNM) is a lightweight dashboard and control system for your Crown node.

Features

• Extensive dashboard with general information about the node, connected peers and the blockchain
• Overview of all connected peers inlcuding country, ISP, client, traffic usage, supported services...
• Ban or disconnect peers (afer the codebase update)
• Manage a list of web hosters to detect if peer is hosted or private
• Overview of the last received blocks
• Overview of the last received forks (orphaned blocks / alternative chains)
• Overview of the memory pool and inflight transactions
• Overview of NFT framework protocols and tokens
• Overview of masternodes and systemnodes
• Overview of active proposals
• Overview of sporks

Requirements

• Crown Core 0.14+
• Web server (e.g. Apache, PHP built-in web server)
• PHP 7.0.0+
• cURL

Installation

1. Download Crown Node Manager either from here or by cloning this repository.
2. Edit src/Config.php to enter your crownd RPC credentials, set a password and change other settings.
3. Upload the folder to the public directory of your web server. If the folder is accesible via the internet, I recommend renaming the folder to something unique. Although CNM is password protected and access can be limited to a specific IP, there can be security flaws and bugs.
4. Open the URL to the folder in your browser and login with the password choosen in src/Config.php.
5. Optional: Run chmod -R 770 /path-to-folder/{data, src, views}. Only necessary for non Apache (AllowOverride All necessary) and publicly accessible web server. For more information, read next section.

Security

• All pages and control functionality are only accessible for logged in users. The only exception is if you use the `Run Rules' cron job functionality. But a password based token is required and the functionality is only able to apply rules.
• Access to CNM is by default limited to localhost. This can be expanded to a specific IP or disabled. If disabled, make sure to protect the CNM folder (.htaccess, rename it to something unique that an attacker will not guess). An attacker could "guess" your password, since there is no build-in brute force protection (if IP protection is disabled).
• The data folder contains your rules, logs and geo information about your peers. Make sure to protect (e.g. chmod -R 770 data) this sensitive information if your web server is publicly accessible. The previously mentioned IP protection doesn't work here. If you use Apache you are fine, since the folder is protected with .htaccess (make sure AllowOverride All is set in your apache2.conf file).

Roadmap

• NFT protocol and token pages enhancements

    * Highlight own protocols/tokens
    * Issue tokens from the protocols page
    * Display full registration information for selected protocol/token (get)
    * Display balanceof for a token
    * Display token totalsupply for a particular protocol
  

• Add geo-IP information to MN/SN pages

    * Location in table
    * Map per node type or one map with different colour markers for MN/SN
  

• Create rules to manage your peers (needs codebase update)

    * Ban, disconnect or log peers that waste ressources, are slow or run old clients
    * Set gobal events that trigger the execution of rules
    * Run rules manually or set up a cron job
  

• Overview of all banned peers (needs codebase update)

    * Unban specific peers
    * Export/Import your ban list
    * Generate iptables rules (reject banned peers at OS level)
  

Suggested enhancements for community participation

• Improve project structure
• Improve error handling
• Import rules functionality
• More help icons
• Use popover for help
• Display expanded peer/block info (popup)
• More customization settings
• Highlight suspicious peers
• Sort mempool tx, request more
• Option to import blacklist of spy / resource wasting peers
• Flag MNs/SNs in peers list
• Flag own MNs/SNs on those pages

Donate

If you find the Crown Node Manager useful please make a donation to CRWTo9YAXM1gg3hSqs61T9AmHiia1jWFtfWn