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Secure Zero Touch Provisioning (sZTP)

Linters CodeQL OpenSSF Scorecard Sztp Go License codecov Go Report Card Go Doc Last Release GitHub stars GitHub Contributors

I Want To Contribute

This project welcomes contributions and suggestions. We are happy to have the Community involved via submission of Issues and Pull Requests (with substantive content or even just fixes). We are hoping for the documents, test framework, etc. to become a community process with active engagement. PRs can be reviewed by by any number of people, and a maintainer may accept.

See CONTRIBUTING and GitHub Basic Process for more details.

Docs

Videos

How SZTP works

See all the details here

graph LR;
    DPU[DPU or IPU]
    Proxy[DHCP Proxy or Relay*]
    DPU-->Proxy;
    Proxy-->DHCPServer*;
    Proxy-->BootstrapServer;
    Proxy-->FileServer*;
    Proxy-->DNSServer*;
    Proxy-->SyslogServer*;
Loading

sZTP on DPU Diagram

xPU sZTP provisioning block

Aliases

โ— docker-compose is deprecated. For details, see Migrate to Compose V2.

command -v docker-compose || { shopt -s expand_aliases && alias docker-compose='docker compose'; }

Serial number

Get real serial number using

root@bf2:~# dmidecode -s system-serial-number
MT2321XZ0KVX

Before start

Change in docker-compose.yml file those settings per your lab:

      NODE_IP_SUBNET: 10.127.127.0
      NODE_IP_NETMASK: 255.255.255.0
      NODE_IP_RANGE_MIN: 10.127.127.100
      NODE_IP_RANGE_MAX: 10.127.127.253
      NODE_IP_ADDRESS: 10.127.127.3

Run everything

docker-compose down --volumes --remove-orphans
docker-compose up --build --force-recreate

Test everything

./scripts/tests.sh

Run sZTP (Bootstrap) Server only

docker-compose up --build bootstrap

Test sZTP (Bootstrap) Server only

Fetching Host-meta

$ docker run --rm --network sztp_opi docker.io/curlimages/curl:8.5.0 --silent --fail-with-body -H Accept:application/yang-data+json http://bootstrap:7080/.well-known/host-meta
HTTP/1.1 200 OK
Content-Type: application/xrd+xml; charset=utf-8
Content-Length: 104
Date: Wed, 17 Aug 2022 00:29:54 GMT
Server: <redacted>

<XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">
  <Link rel="restconf" href="/restconf"/>
</XRD>

Fetching the RESTCONF Root Resource

$ docker run --rm --network sztp_opi docker.io/curlimages/curl:8.5.0 --silent --fail-with-body --user [email protected]:my-secret -H Accept:application/yang-data+json http://bootstrap:7080/restconf/
HTTP/1.1 200 OK
Content-Type: application/yang-data+json; charset=utf-8
Content-Length: 137
Date: Wed, 17 Aug 2022 00:30:32 GMT
Server: <redacted>

{
    "ietf-restconf:restconf" : {
        "data" : {},
        "operations" : {},
        "yang-library-version" : "2019-01-04"
    }
}

Get the Current (Default) Configuration

$ docker run --rm --network sztp_opi docker.io/curlimages/curl:8.5.0 --silent --fail-with-body --user [email protected]:my-secret -H "Accept:application/yang-data+json" http://bootstrap:7080/restconf/ds/ietf-datastores:running
HTTP/1.1 200 OK
Content-Type: application/yang-data+json; charset=utf-8
Content-Length: 318
Date: Wed, 17 Aug 2022 00:24:47 GMT
Server: <redacted>

{
  "wn-sztpd-1:transport": {
    "listen": {
      "endpoint": [
        {
          "name": "default startup endpoint",
          "use-for": "native-interface",
          "http": {
            "tcp-server-parameters": {
              "local-address": "0.0.0.0"
            }
          }
        }
      ]
    }
  }
}

Device Getting Onboarding Information

Read the configuration back and validate it is correct:

docker run --rm --network sztp_opi docker.io/curlimages/curl:8.5.0 --silent --fail-with-body --user [email protected]:my-secret -H "Accept:application/yang-data+json" http://bootstrap:7080/restconf/ds/ietf-datastores:running

Get onboarding info (from device perspective)

$ docker run --rm --user 0 --network sztp_opi -v sztp_client-certs:/certs docker.io/curlimages/curl:8.5.0 --fail-with-body -X POST --data '{"ietf-sztp-bootstrap-server:input":{"hw-model":"model-x","os-name":"vendor-os","os-version":"17.3R2.1","signed-data-preferred":[null],"nonce":"BASE64VALUE="}}' -H Content-Type:application/yang-data+json --user third-serial-number:my-secret --key /certs/third_private_key.pem --cert /certs/third_my_cert.pem --cacert /certs/opi.pem https://bootstrap:9090/restconf/operations/ietf-sztp-bootstrap-server:get-bootstrapping-data  | tee /tmp/post_rpc_input.json
{
  "ietf-sztp-bootstrap-server:output": {
    "conveyed-information": "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"
  }
}

Decode payload

$ jq -r .\"ietf-sztp-bootstrap-server:output\".\"conveyed-information\" /tmp/post_rpc_input.json | base64 --decode | tail -n +2 | sed  '1i {' | jq . | tee /tmp/post_rpc_fixed.json
{
  "ietf-sztp-conveyed-info:onboarding-information": {
    "boot-image": {
      "download-uri": [
        "https://web:443/my-boot-image.img",
        "ftps://web:990/my-boot-image.img"
      ],
      "image-verification": [
        {
          "hash-algorithm": "ietf-sztp-conveyed-info:sha-256",
          "hash-value": "7b:ca:e6:ac:23:06:d8:79:06:8c:ac:03:80:e2:16:44:7e:40:6a:65:fa:d4:69:61:6e:05:ce:f5:87:dc:2b:97"
        }
      ]
    },
    "pre-configuration-script": "IyEvYmluL2Jhc2gKZWNobyAiaW5zaWRlIHRoZSBwcmUtY29uZmlndXJhdGlvbi1zY3JpcHQuLi4iCg==",
    "configuration-handling": "merge",
    "configuration": "PHRvcCB4bWxucz0iaHR0cHM6L2V4YW1wbGUuY29tL2NvbmZpZyI+CiAgPGFueS14bWwtY29udGVudC1va2F5Lz4KPC90b3A+Cg==",
    "post-configuration-script": "IyEvYmluL2Jhc2gKZWNobyAiaW5zaWRlIHRoZSBwb3N0LWNvbmZpZ3VyYXRpb24tc2NyaXB0Li4uIgo="
  }
}

View the Audit Log

$ docker run --rm --network sztp_opi docker.io/curlimages/curl:8.5.0 --silent --fail-with-body --user [email protected]:my-secret -H "Accept:application/yang-data+json" http://bootstrap:7080/restconf/ds/ietf-datastores:operational/wn-sztpd-1:audit-log

HTTP/1.1 200 OK
Content-Type: application/yang-data+json; charset=utf-8
Content-Length: 648
Date: Wed, 17 Aug 2022 19:35:34 GMT
Server: <redacted>

{
  "wn-sztpd-1:audit-log": {
    "log-entry": [
      {
        "timestamp": "2022-08-17T19:35:22Z",
        "source-ip": "10.127.127.3",
        "host": "bootstrap:9090",
        "method": "POST",
        "path": "/restconf/operations/ietf-sztp-bootstrap-server:get-bootstrapping-data",
        "outcome": "success"
      }
    ]
  }
}

View the Bootstrapping Log

$ docker run --rm --network sztp_opi docker.io/curlimages/curl:8.5.0 --silent --fail-with-body --user [email protected]:my-secret -H "Accept:application/yang-data+json" http://bootstrap:7080/restconf/ds/ietf-datastores:operational/wn-sztpd-1:devices/device=third-serial-number/bootstrapping-log
HTTP/1.1 200 OK
Content-Type: application/yang-data+json; charset=utf-8
Content-Length: 1034
Date: Wed, 24 Aug 2022 18:48:48 GMT
Server: <redacted>

{
  "wn-sztpd-1:bootstrapping-log": {
    "log-entry": [
      {
        "timestamp": "2022-08-24T18:47:54Z",
        "source-ip": "10.127.127.3",
        "method": "POST",
        "path": "/restconf/operations/ietf-sztp-bootstrap-server:get-bootstrapping-data",
        "return-code": 200,
        "event-details": {
          "get-bootstrapping-data-event": {
            "passed-input": {
              "hw-model": "model-x",
              "os-name": "vendor-os",
              "os-version": "17.3R2.1",
              "signed-data-preferred": [
                null
              ],
              "nonce": "BASE64VALUE="
            },
            "selected-response": "catch-all-response",
            "response-details": {
              "managed-response": {
                "conveyed-information": {
                  "onboarding-information": {
                    "referenced-definition": "my-onboarding-information"
                  }
                }
              }
            }
          }
        }
      }
    ]
  }
}

Download the image and scripts

$ jq -r .\"ietf-sztp-conveyed-info:onboarding-information\".\"configuration\" /tmp/post_rpc_fixed.json | base64 --decode
<top xmlns="https:/example.com/config">
  <any-xml-content-okay/>
</top>

$ jq -r .\"ietf-sztp-conveyed-info:onboarding-information\".\"pre-configuration-script\" /tmp/post_rpc_fixed.json | base64 --decode
#!/bin/bash
echo "inside the pre-configuration-script..."

$ jq -r .\"ietf-sztp-conveyed-info:onboarding-information\".\"post-configuration-script\" /tmp/post_rpc_fixed.json | base64 --decode
#!/bin/bash
echo "inside the post-configuration-script..."

$ jq -r .\"ietf-sztp-conveyed-info:onboarding-information\".\"boot-image\".\"download-uri\"[] /tmp/post_rpc_fixed.json
https://web:443/my-boot-image.img
ftps://web:990/my-boot-image.img

$ jq -r .\"ietf-sztp-conveyed-info:onboarding-information\".\"boot-image\".\"image-verification\"[] /tmp/post_rpc_fixed.json
{
  "hash-algorithm": "ietf-sztp-conveyed-info:sha-256",
  "hash-value": "7b:ca:e6:ac:23:06:d8:79:06:8c:ac:03:80:e2:16:44:7e:40:6a:65:fa:d4:69:61:6e:05:ce:f5:87:dc:2b:97"
}

$ URL=$(jq -r .\"ietf-sztp-conveyed-info:onboarding-information\".\"boot-image\".\"download-uri\"[] /tmp/post_rpc_fixed.json)
$ docker-compose run --rm -v /tmp:/tmp agent curl --output /tmp/$(basename ${URL}) --fail ${URL}
Creating sztp_agent_run ... done
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 65536  100 65536    0     0  31.2M      0 --:--:-- --:--:-- --:--:-- 31.2M

$ openssl dgst -sha256 -c /tmp/$(basename ${URL})
SHA256(/tmp/my-boot-image.img)= 7b:ca:e6:ac:23:06:d8:79:06:8c:ac:03:80:e2:16:44:7e:40:6a:65:fa:d4:69:61:6e:05:ce:f5:87:dc:2b:97

# Validate signature

$ SIGNATURE=$(openssl dgst -sha256 -c /tmp/$(basename ${URL}) | awk '{print $2}')
$ jq -r .\"ietf-sztp-conveyed-info:onboarding-information\".\"boot-image\".\"image-verification\"[] /tmp/post_rpc_fixed.json | grep $SIGNATURE
  "hash-value": "7b:ca:e6:ac:23:06:d8:79:06:8c:ac:03:80:e2:16:44:7e:40:6a:65:fa:d4:69:61:6e:05:ce:f5:87:dc:2b:97"

Run DHCP server only

docker-compose up --build dhcp

Test DHCP server with NMAP

$ docker-compose run --rm -T nmap
Creating sztp_nmap_run ... done
Starting Nmap 7.92 ( https://nmap.org ) at 2022-08-15 19:13 UTC
Pre-scan script results:
| broadcast-dhcp-discover:
|   Response 1 of 1:
|     Interface: eth0
|     IP Offered: 10.127.127.101
|     DHCP Message Type: DHCPOFFER
|     Server Identifier: 10.127.127.2
|     IP Address Lease Time: 10m00s
|     Subnet Mask: 255.255.255.0
|     Bootfile Name: test.cfg
|_    TFTP Server Name: w.x.y.z
WARNING: No targets were specified, so 0 hosts scanned.
Nmap done: 0 IP addresses (0 hosts up) scanned in 10.25 seconds

Test DHCP server with DHCP client

$ docker-compose run --rm -T client
Creating sztp_client_run ... done
Internet Systems Consortium DHCP Client 4.4.3
Copyright 2004-2022 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

RTNETLINK answers: Operation not permitted
Listening on LPF/eth0/02:42:0a:7f:7f:03
Sending on   LPF/eth0/02:42:0a:7f:7f:03
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0xb3f32238)
DHCPOFFER of 10.127.127.102 from 10.127.127.2
DHCPREQUEST for 10.127.127.102 on eth0 to 255.255.255.255 port 67 (xid=0xb3f32238)
DHCPACK of 10.127.127.102 from 10.127.127.2 (xid=0xb3f32238)
RTNETLINK answers: Operation not permitted
bound to 10.127.127.102 -- renewal in 263 seconds.

see result

$ docker-compose exec client cat /var/lib/dhclient/dhclient.leases
lease {
  interface "eth0";
  fixed-address 10.127.127.100;
  filename "grubx64.efi";
  option subnet-mask 255.255.255.0;
  option sztp-redirect-urls "https://bootstrap:9090/restconf/operations/ietf-sztp-bootstrap-server:get-bootstrapping-data";
  option dhcp-lease-time 600;
  option tftp-server-name "w.x.y.z";
  option bootfile-name "test.cfg";
  option dhcp-message-type 5;
  option dhcp-server-identifier 10.127.127.2;
  renew 1 2022/08/15 19:16:40;
  rebind 1 2022/08/15 19:20:50;
  expire 1 2022/08/15 19:22:05;
}

Test mDNS server with NMAP

$ docker-compose run --rm -T nmapmdnsclient
Starting Nmap 7.93 ( https://nmap.org ) at 2022-10-27 21:14 UTC
Nmap scan report for avahi (10.127.127.4)
Host is up (0.000082s latency).
rDNS record for 10.127.127.4: sztp-avahi-1.sztp_opi

PORT     STATE  SERVICE
5353/tcp closed mdns
MAC Address: 02:42:0A:7F:7F:04 (Unknown)

Nmap done: 1 IP address (1 host up) scanned in 0.34 seconds

Run HTTPs server only

docker-compose up --build web

Test HTTPs server only

docker run --rm --user 0 --network sztp_opi -v sztp_client-certs:/certs docker.io/curlimages/curl:8.5.0 --insecure --fail-with-body --key /certs/third_private_key.pem --cert /certs/third_my_cert.pem --cacert /certs/opi.pem --output /tmp/third-boot-image.tst "https://web:443/third-boot-image.img"

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