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polkadot-secure-validator
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polkadot-secure-validator - npm Package Compare versions
Comparing version 3.0.1 to 3.1.0
| { | ||
| "name": "polkadot-secure-validator", | ||
| "version": "3.0.1", | ||
| "version": "3.1.0", | ||
| "main": "src/index.js", | ||
@@ -5,0 +5,0 @@ "repository": "https://github.com/w3f/polkadot-secure-validator", |
433
README.md
@@ -6,9 +6,6 @@ [](https://circleci.com/gh/w3f/polkadot-secure-validator) | ||
| This repo describes a potential setup for a Polkadot validator that aims to | ||
| prevent some types of potential attacks, as described in the | ||
| [Polkadot Secure Validator approach](https://hackmd.io/QSJlqjZpQBihEU_ojmtR8g). | ||
| prevent some types of potential attacks at the TCP layer and below. | ||
| The [Workflow](#workflow) section describes the [Platform Layer](#platform-layer) | ||
| and the [Application Layer](#application-layer) in more detail. | ||
|  | ||
| ## Usage | ||
@@ -37,30 +34,12 @@ | ||
| The secure validator setup is composed of one or more validators and a set of | ||
| public nodes nodes connected to it. The validators are isolated from the internet | ||
| and only have access to the Polkadot network through | ||
| the public nodes. | ||
| The secure validator setup is composed of one or more validators that run with a local | ||
| instance of NGINX as a reverse TCP proxy in front of them. The validators are instructed to: | ||
| * advertise themselves with the public IP of the node and the port where the | ||
| reverse proxy is listening. | ||
| * bind to the localhost interface, so that they only allow incoming connections from the | ||
| proxy. | ||
| The connection between the validator nodes and the public nodes is performed | ||
| defining a VPN to which all these nodes belong. The Polkadot instance running in | ||
| the validator nodes are configured to only listen on the VPN-attached interface, | ||
| and uses the public node's VPN address in the `--reserved-nodes` parameter. It is | ||
| also protected by a firewall that only allows connections on the VPN port. | ||
| The setup also configures a firewall in which the default p2p port is closed for | ||
| incoming connections and only the proxy port is open. | ||
| This way, the only nodes allowed to connect to the validators are the public nodes | ||
| through the VPN. Messages sent by other validators can still reach it through | ||
| gossiping, and these validators can know the IP address of the secure validator | ||
| because of this, but can't directly connect to it without being part of the VPN. | ||
| *WARNING* | ||
| If you use this tool to create and/or configure your validator setup or | ||
| implement your setup based on this approach take into account that if you add | ||
| public telemetry endpoints to your nodes (either the validator or the public | ||
| nodes) then the IP address of the validator will be publicly available too, | ||
| given that the contents of the network state RPC call are sent to telemetry. | ||
| Even though the secure validator in this setup only has the VPN port open and | ||
| Wireguard has a reasonable [approach to mitigate DoS attacks](https://www.wireguard.com/protocol/#dos-mitigation), | ||
| we recommend to not send this information to endpoints publicly accessible. | ||
| ## Workflow | ||
@@ -73,6 +52,5 @@ | ||
| Both validator and public nodes are created in a similar way using the terraform | ||
| modules located at [terraform](/terraform) directory. We have created code for | ||
| several providers but it is possible to add new ones, please reach out if you | ||
| are interested in any provider currently not available. | ||
| Validators are created using the terraform modules located at [terraform](/terraform) | ||
| directory. We have created code for several providers but it is possible to add new | ||
| ones, please reach out if you are interested in any provider currently not available. | ||
@@ -84,373 +62,24 @@ Besides the actual machines the terraform modules create the minimum required networking | ||
| This is done through the ansible playbook and roles located at [ansible](/ansible), the | ||
| configuration applied depend on the type of node: | ||
| This is done through the ansible playbook and polkadot-validator role located at | ||
| [ansible](/ansible), basically the role performs these actions: | ||
| * Common: | ||
| * Software firewall setup, for the validator we only allow the proxy, SSH and, if | ||
| enabled, node-exporter ports. | ||
| * Configure journald to tune log storage. | ||
| * Create polkadot user and group. | ||
| * Configure NGINX proxy | ||
| * Setup polkadot service, including binary download. | ||
| * Polkadot session management, create session keys if they are not present. | ||
| * Setup node-exporter if the configuration includes it. | ||
| * Software firewall setup, for the validator we only allow the VPN and SSH | ||
| ports, for the public nodes VPN SSH and p2p ports. | ||
| # Note about upgrades from the sentries setup | ||
| * VPN setup: for the VPN solution we are using [WireGuard](https://github.com/WireGuard/WireGuard), | ||
| at this stage we create the private and public keys on each node, making the | ||
| public keys available to ansible. | ||
| The current version of polkadot-secure-validator doesn't allow to create and configure | ||
| sentry nodes. Although the terraform files and ansible roles of this latest version | ||
| can be applied on setups created with previous versions, the validators would be configured | ||
| to work without sentries and to connect to the network using the local reverse proxy instead. | ||
| * VPN install: we install and configure WireGuard on each host using the public | ||
| keys from the previous stage. The configuration for the validator looks like: | ||
| ``` | ||
| [Interface] | ||
| PrivateKey = <...> | ||
| ListenPort = 51820 | ||
| SaveConfig = true | ||
| Address = 10.0.0.1/24 | ||
| [Peer] | ||
| PublicKey = 8R7PTv1CdNLHRsDvrvE58Ac0Inc9vOLY2vFMWIFV/W4= | ||
| AllowedIPs = 10.0.0.2/32 | ||
| Endpoint = 64.93.77.93:51820 | ||
| [Peer] | ||
| PublicKey = ZZW6Wuk+YjJToeLHIUrp0HAqfNozgQfUMo2owC2Imzg= | ||
| AllowedIPs = 10.0.0.3/32 | ||
| Endpoint = 50.81.184.50:51820 | ||
| [Peer] | ||
| PublicKey = LZHKtuGCxz9iCoNNDmQzzNe9eF9aLXj/4yJRkFjCWzM= | ||
| AllowedIPs = 10.0.0.4/32 | ||
| Endpoint = 45.243.244.130:51820 | ||
| ``` | ||
| * Polkadot setup: create a Polkadot user and group and download the binary. | ||
| * Public nodes: | ||
| * Start Polkadot service: the public nodes are started and we make the libp2p peer | ||
| id of the node available to ansible. The generated systemd unit looks like: | ||
| ``` | ||
| [Unit] | ||
| Description=Polkadot Node | ||
| [Service] | ||
| ExecStart=/usr/local/bin/polkadot \ | ||
| --name sv-public-0 \ | ||
| --sentry | ||
| Restart=always | ||
| [Install] | ||
| WantedBy=multi-user.target | ||
| ``` | ||
| * Private (validator) nodes: | ||
| * Start Polkadot service: the private (validator) node is started with the node's VPN address as part | ||
| of the listen multiaddr and the multiaddr of the public nodes (with the peer id | ||
| from the previous stage and the VPN addresses) as `reserved-nodes`. It looks like: | ||
| ``` | ||
| [Unit] | ||
| Description=Polkadot Node | ||
| [Service] | ||
| ExecStart=/usr/local/bin/polkadot \ | ||
| --name sv-private \ | ||
| --validator \ | ||
| --listen-addr=/ip4/10.0.0.1/tcp/30333 \ | ||
| --reserved-nodes /ip4/10.0.0.2/tcp/30333/p2p/QmNpQbu2nKfHQMySnCue3XC9mAjBfzi8DQ9KvNwUM8jZdx \ | ||
| --reserved-nodes /ip4/10.0.0.3/tcp/30333/p2p/QmY81TLZKeNj4mGDAhFQE6RrHEJPidAkccgUTsJo7ifNFJ \ | ||
| --reserved-nodes /ip4/10.0.0.4/tcp/30333/p2p/QmTwMDJDnPyHUHV2fZFcVbNpYzp6Fu7LP6VhhK3Ei13iXr | ||
| Restart=always | ||
| [Install] | ||
| WantedBy=multi-user.target | ||
| ``` | ||
| ## Scopes | ||
| This setup partitions the network in 3 separate kind of nodes: secure validator, | ||
| its public node and the regular network nodes, haveing each group a different | ||
| vision and accessibility to the rest of the network. To verify this, we'll execute | ||
| the `system_networkState` RPC call on nodes of each partition: | ||
| ``` | ||
| curl -H "Content-Type: application/json" --data '{ "jsonrpc":"2.0", "method":"system_networkState", "params":[],"id":1 }' localhost:9933 | ||
| ``` | ||
| ### Validator | ||
| It can only reach and be reached by its public nodes, from the | ||
| `system_networkState` RPC call: | ||
| ``` | ||
| { | ||
| [ ........ ] | ||
| "result": { | ||
| "connectedPeers": { | ||
| [ only validator's public nodes shown here] | ||
| "QmPjNcWNZjNrjVFzkNYR6jH7HLqyU7j9piczUyNoxce1fD": { | ||
| "enabled": true, | ||
| "endpoint": { | ||
| "dialing": "/ip4/10.0.0.2/tcp/30333" | ||
| }, | ||
| "knownAddresses": [ | ||
| "/ip6/::1/tcp/30333", | ||
| "/ip4/10.0.0.2/tcp/30333", | ||
| "/ip4/127.0.0.1/tcp/30333", | ||
| "/ip4/172.26.59.86/tcp/30333", | ||
| "/ip4/18.197.157.119/tcp/30333" | ||
| ], | ||
| "latestPingTime": { | ||
| "nanos": 256512049, | ||
| "secs": 0 | ||
| }, | ||
| "open": true, | ||
| }, | ||
| [ ........ ] | ||
| }, | ||
| "notConnectedPeers": { | ||
| [ always known regular nodes: boot nodes, other validators, etc ] | ||
| "QmP3zYRhAxxw4fDf6Vq5agM8AZt1m2nKpPAEDmyEHPK5go": { | ||
| "knownAddresses": [ | ||
| "/dns4/p2p.testnet-4.kusama.network/tcp/30100" | ||
| ], | ||
| "latestPingTime": null, | ||
| "versionString": null | ||
| }, | ||
| [ ........ ] | ||
| }, | ||
| "peerset": { | ||
| [ all known nodes shown here, only reported connected to validator's public nodes ] | ||
| "QmPjNcWNZjNrjVFzkNYR6jH7HLqyU7j9piczUyNoxce1fD": { | ||
| "connected": true, | ||
| "reputation": 1114 | ||
| }, | ||
| "QmP3zYRhAxxw4fDf6Vq5agM8AZt1m2nKpPAEDmyEHPK5go": { | ||
| "connected": false, | ||
| "reputation": 0 | ||
| }, | ||
| [ ........ ] | ||
| "reserved_only": true | ||
| } | ||
| } | ||
| } | ||
| ``` | ||
| ### Validator's public nodes | ||
| They can reach and be reached both by the validator and by the network regular | ||
| nodes: | ||
| ``` | ||
| { | ||
| [ ........ ] | ||
| "result": { | ||
| "connectedPeers": { | ||
| [ secure validator, other secure validator's public nodes and regular nodes] | ||
| "QmZSocEssLWHYCY6mqR99DcSFEpMb95fVeMsScrY8jqBm8": { | ||
| "enabled": true, | ||
| "endpoint": { | ||
| "listening": { | ||
| "listen_addr": "/ip4/10.0.0.2/tcp/30333", | ||
| "send_back_addr": "/ip4/10.0.0.1/tcp/54932" | ||
| } | ||
| }, | ||
| "knownAddresses": [ | ||
| "/ip4/10.0.0.1/tcp/30333", | ||
| "/ip4/10.0.1.18/tcp/30333", | ||
| "/ip4/147.75.199.231/tcp/30333", | ||
| "/ip4/10.0.1.152/tcp/30333" | ||
| ], | ||
| "latestPingTime": { | ||
| "nanos": 335876602, | ||
| "secs": 0 | ||
| }, | ||
| "open": true, | ||
| }, | ||
| "QmP3zYRhAxxw4fDf6Vq5agM8AZt1m2nKpPAEDmyEHPK5go": { | ||
| "enabled": true, | ||
| "endpoint": { | ||
| "listening": { | ||
| "listen_addr": "/ip4/172.26.59.86/tcp/30333", | ||
| "send_back_addr": "/ip4/191.232.49.216/tcp/3008" | ||
| } | ||
| }, | ||
| "knownAddresses": [ | ||
| "/dns4/p2p.testnet-4.kusama.network/tcp/30100", | ||
| "/ip4/127.0.0.1/tcp/30100", | ||
| "/ip4/10.244.0.10/tcp/30100", | ||
| "/ip4/191.232.49.216/tcp/30100" | ||
| ], | ||
| "latestPingTime": { | ||
| "nanos": 603313251, | ||
| "secs": 0 | ||
| }, | ||
| "open": true, | ||
| }, | ||
| [ ........ ] | ||
| }, | ||
| "notConnectedPeers": { | ||
| [ regular nodes ] | ||
| "QmW45D6YLfctkSnsjyoqcSxw9qoiXUmAFGn5ea99L6SC7X": { | ||
| "knownAddresses": [ | ||
| "/ip4/10.8.2.14/tcp/30101", | ||
| "/ip4/127.0.0.1/tcp/30101", | ||
| "/ip4/34.80.190.48/tcp/30101" | ||
| ], | ||
| "latestPingTime": { | ||
| "nanos": 571989635, | ||
| "secs": 0 | ||
| }, | ||
| }, | ||
| [ ........ ] | ||
| }, | ||
| "peerset": { | ||
| [ all known nodes reported as connected here ] | ||
| "QmP3zYRhAxxw4fDf6Vq5agM8AZt1m2nKpPAEDmyEHPK5go": { | ||
| "connected": true, | ||
| "reputation": 1277 | ||
| }, | ||
| "QmZSocEssLWHYCY6mqR99DcSFEpMb95fVeMsScrY8jqBm8": { | ||
| "connected": true, | ||
| "reputation": -571 | ||
| }, | ||
| [ ........ ] | ||
| "reserved_only": false | ||
| } | ||
| } | ||
| } | ||
| ``` | ||
| ### Network regular nodes | ||
| They can reach and be reached by the validator's public nodes and by other regular | ||
| nodes, the don't have access to the validator. | ||
| ``` | ||
| { | ||
| [ ........ ] | ||
| "result": { | ||
| "connectedPeers": { | ||
| [ secure validator's public nodes and regular nodes ] | ||
| "QmPjNcWNZjNrjVFzkNYR6jH7HLqyU7j9piczUyNoxce1fD": { | ||
| "enabled": true, | ||
| "endpoint": { | ||
| "listening": { | ||
| "listen_addr": "/ip4/10.44.1.11/tcp/30101", | ||
| "send_back_addr": "/ip4/18.197.157.119/tcp/42962" | ||
| } | ||
| }, | ||
| "knownAddresses": [ | ||
| "/ip4/172.26.59.86/tcp/30333", | ||
| "/ip4/127.0.0.1/tcp/30333", | ||
| "/ip6/::1/tcp/30333", | ||
| "/ip4/18.197.157.119/tcp/30333", | ||
| "/ip4/10.0.0.2/tcp/30333", | ||
| "/ip4/10.0.1.18/tcp/30333" | ||
| ], | ||
| "latestPingTime": { | ||
| "nanos": 108101687, | ||
| "secs": 0 | ||
| }, | ||
| "open": true, | ||
| }, | ||
| "QmP3zYRhAxxw4fDf6Vq5agM8AZt1m2nKpPAEDmyEHPK5go": { | ||
| "enabled": true, | ||
| "endpoint": { | ||
| "listening": { | ||
| "listen_addr": "/ip4/10.44.1.11/tcp/30101", | ||
| "send_back_addr": "/ip4/191.232.49.216/tcp/3010" | ||
| } | ||
| }, | ||
| "knownAddresses": [ | ||
| "/dns4/p2p.testnet-4.kusama.network/tcp/30100", | ||
| "/ip4/127.0.0.1/tcp/30100", | ||
| "/ip4/191.232.49.216/tcp/30100", | ||
| "/ip4/10.244.0.10/tcp/30100" | ||
| ], | ||
| "latestPingTime": { | ||
| "nanos": 717286051, | ||
| "secs": 0 | ||
| }, | ||
| "open": true, | ||
| "versionString": "parity-polkadot/v0.5.0-4e53ad1-x86_64-linux-gnu (unknown)" | ||
| }, | ||
| [ ........ ] | ||
| }, | ||
| "notConnectedPeers": { | ||
| [ secure validator ] | ||
| "QmZSocEssLWHYCY6mqR99DcSFEpMb95fVeMsScrY8jqBm8": { | ||
| "knownAddresses": [ | ||
| "/ip4/10.0.0.1/tcp/30333", | ||
| "/ip4/10.0.1.18/tcp/30333", | ||
| "/ip4/10.0.1.152/tcp/30333", | ||
| "/ip4/147.75.199.231/tcp/30333" | ||
| ], | ||
| "latestPingTime": { | ||
| "nanos": 375552762, | ||
| "secs": 0 | ||
| }, | ||
| } | ||
| [ ........ ] | ||
| }, | ||
| "peerset": { | ||
| [ all known nodes shown here, reported connected to all, secure validator with 0 reputation ] | ||
| "QmP3zYRhAxxw4fDf6Vq5agM8AZt1m2nKpPAEDmyEHPK5go": { | ||
| "connected": true, | ||
| "reputation": 1115 | ||
| }, | ||
| "QmPjNcWNZjNrjVFzkNYR6jH7HLqyU7j9piczUyNoxce1fD": { | ||
| "connected": true, | ||
| "reputation": 3500 | ||
| }, | ||
| "QmZSocEssLWHYCY6mqR99DcSFEpMb95fVeMsScrY8jqBm8": { | ||
| "connected": true, | ||
| "reputation": 0 | ||
| }, | ||
| [ ........ ] | ||
| "reserved_only": false | ||
| } | ||
| } | ||
| } | ||
| ``` | ||
| If you created the sentries with a previous version of this tool through terraform following | ||
| the complete workflow, then they will not be deleted automatically when running this new version. | ||
| In short, the old sentries will no longer be used by the validators and it will be up to you to | ||
| remove them manually. |
@@ -12,4 +12,6 @@ const { Ansible } = require('./clients/ansible'); | ||
| for (let counter = 0; counter < ansibleCfg.publicNodes.nodes.length; counter++) { | ||
| ansibleCfg.publicNodes.nodes[counter].ipAddresses = platformResult.publicNodesIpAddresses[counter]; | ||
| if(ansibleCfg.publicNodes) { | ||
| for (let counter = 0; counter < ansibleCfg.publicNodes.nodes.length; counter++) { | ||
| ansibleCfg.publicNodes.nodes[counter].ipAddresses = platformResult.publicNodesIpAddresses[counter]; | ||
| } | ||
| } | ||
@@ -16,0 +18,0 @@ |
@@ -42,4 +42,19 @@ const path = require('path'); | ||
| const target = path.join(buildDir, inventoryFileName); | ||
| const validators = this._genTplNodes(this.config.validators); | ||
| const publicNodes = this._genTplNodes(this.config.publicNodes, validators.length); | ||
| const validatorTelemetryUrl = this.config.validators.telemetryUrl; | ||
| const validatorLoggingFilter = this.config.validators.loggingFilter; | ||
| const polkadotAdditionalValidatorFlags = this.config.validators.additionalFlags; | ||
| let publicNodes = []; | ||
| let publicTelemetryUrl = ''; | ||
| let publicLoggingFilter=''; | ||
| let polkadotAdditionalPublicFlags = ''; | ||
| if (this.config.publicNodes) { | ||
| publicNodes = this._genTplNodes(this.config.publicNodes, validators.length); | ||
| publicTelemetryUrl = this.config.publicNodes.telemetryUrl; | ||
| publicLoggingFilter = this.config.publicNodes.loggingFilter; | ||
| polkadotAdditionalPublicFlags = this.config.publicNodes.additionalFlags; | ||
| } | ||
| const data = { | ||
@@ -56,7 +71,7 @@ project: this.config.project, | ||
| validatorTelemetryUrl: this.config.validators.telemetryUrl, | ||
| publicTelemetryUrl: this.config.publicNodes.telemetryUrl, | ||
| validatorTelemetryUrl, | ||
| publicTelemetryUrl, | ||
| validatorLoggingFilter: this.config.validators.loggingFilter, | ||
| publicLoggingFilter: this.config.publicNodes.loggingFilter, | ||
| validatorLoggingFilter, | ||
| publicLoggingFilter, | ||
@@ -66,4 +81,4 @@ buildDir, | ||
| polkadotAdditionalCommonFlags: this.config.additionalFlags, | ||
| polkadotAdditionalValidatorFlags: this.config.validators.additionalFlags, | ||
| polkadotAdditionalPublicFlags: this.config.publicNodes.additionalFlags, | ||
| polkadotAdditionalValidatorFlags, | ||
| polkadotAdditionalPublicFlags, | ||
| }; | ||
@@ -70,0 +85,0 @@ if (this.config.nodeExporter && this.config.nodeExporter.enabled) { |
@@ -41,6 +41,8 @@ const fs = require('fs-extra'); | ||
| let publicNodeSyncPromises = []; | ||
| try { | ||
| publicNodeSyncPromises = await this._create('publicNode', sshKeys.publicNodePublicKey, this.config.publicNodes.nodes, method); | ||
| } catch(e) { | ||
| console.log(`Could not get publicNodes sync promises: ${e.message}`); | ||
| if(this.config.publicNodes){ | ||
| try { | ||
| publicNodeSyncPromises = await this._create('publicNode', sshKeys.publicNodePublicKey, this.config.publicNodes.nodes, method); | ||
| } catch(e) { | ||
| console.log(`Could not get publicNodes sync promises: ${e.message}`); | ||
| } | ||
| } | ||
@@ -61,9 +63,10 @@ const syncPromises = validatorSyncPromises.concat(publicNodeSyncPromises) | ||
| let publicNodesCleanPromises = [] | ||
| try { | ||
| publicNodesCleanPromises = await this._destroy('publicNode', this.config.publicNodes.nodes); | ||
| } catch(e) { | ||
| console.log(`Could not get publicNodes clean promises: ${e.message}`); | ||
| let publicNodesCleanPromises = []; | ||
| if(this.config.publicNodes){ | ||
| try { | ||
| publicNodesCleanPromises = await this._destroy('publicNode', this.config.publicNodes.nodes); | ||
| } catch(e) { | ||
| console.log(`Could not get publicNodes clean promises: ${e.message}`); | ||
| } | ||
| } | ||
| const cleanPromises = validatorCleanPromises.concat(publicNodesCleanPromises); | ||
@@ -171,4 +174,6 @@ | ||
| for (let counter = 0; counter < this.config.publicNodes.nodes.length; counter++) { | ||
| this._copyTerraformFiles('publicNode', counter, this.config.publicNodes.nodes[counter].provider); | ||
| if (this.config.publicNodes){ | ||
| for (let counter = 0; counter < this.config.publicNodes.nodes.length; counter++) { | ||
| this._copyTerraformFiles('publicNode', counter, this.config.publicNodes.nodes[counter].provider); | ||
| } | ||
| } | ||
@@ -175,0 +180,0 @@ } |
@@ -16,4 +16,6 @@ const asyncUtils = require('./async.js'); | ||
| const validatorIpAddresses = await this._extractOutput('validator', this.config.validators.nodes); | ||
| const publicNodesIpAddresses = await this._extractOutput('publicNode', this.config.publicNodes.nodes); | ||
| let publicNodesIpAddresses = []; | ||
| if(this.config.publicNodes){ | ||
| publicNodesIpAddresses = await this._extractOutput('publicNode', this.config.publicNodes.nodes); | ||
| } | ||
| return { validatorIpAddresses, publicNodesIpAddresses }; | ||
@@ -20,0 +22,0 @@ } |
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- Lines of code
- increased by4.16%
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- decreased by-35.7%
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