ip-restriction - Apisix

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Description

The ip-restriction Plugin supports restricting access to upstream resources by IP addresses, through either configuring a whitelist or blacklist of IP addresses. Restricting IP to resources helps prevent unauthorized access and harden API security.

Attributes

Name	Type	Required	Default	Valid values	Description
whitelist	array[string]	False			List of IPs or CIDR ranges to whitelist.
blacklist	array[string]	False			List of IPs or CIDR ranges to blacklist.
message	string	False	"Your IP address is not allowed"	[1, 1024]	Message returned when the IP address is not allowed access.
response_code	integer	False	403	[403, 404]	HTTP response code returned when the IP address is not allowed access.

:::note

At least one of the whitelist or blacklist should be configured, but they cannot be configured at the same time.

:::

Examples

The examples below demonstrate how you can configure the ip-restriction Plugin for different scenarios.

:::note

You can fetch the admin_key from config.yaml and save to an environment variable with the following command:

bash

admin_key=$(yq '.deployment.admin.admin_key[0].key' conf/config.yaml | sed 's/"//g')

:::

Restrict Access by Whitelisting

The following example demonstrates how you can whitelist a list of IP addresses that should have access to the upstream resource and customize the error message for access denial.

Create a Route with the ip-restriction Plugin to whitelist a range of IPs and customize the error message when the access is denied:

shell

curl "http://127.0.0.1:9180/apisix/admin/routes" -X PUT \
  -H "X-API-KEY: ${admin_key}" \
  -d '{
    "id": "ip-restriction-route",
    "uri": "/anything",
    "plugins": {
      "ip-restriction": {
        "whitelist": [
          "192.168.0.1/24"
        ],
        "message": "Access denied"
      }
    },
    "upstream": {
      "type": "roundrobin",
      "nodes": {
        "httpbin.org:80": 1
      }
    }
  }'

Send a request to the Route:

shell

curl -i "http://127.0.0.1:9080/anything"

If your IP is allowed, you should receive an HTTP/1.1 200 OK response. If not, you should receive an HTTP/1.1 403 Forbidden response with the following error message:

text

{"message":"Access denied"}

Restrict Access Using Modified IP

The following example demonstrates how you can modify the IP used for IP restriction, using the real-ip Plugin. This is particularly useful if APISIX is behind a reverse proxy and the real client IP is not available to APISIX.

Create a Route with the ip-restriction Plugin to whitelist a specific IP address and obtain client IP address from the URL parameter realip:

shell

curl "http://127.0.0.1:9180/apisix/admin/routes" -X PUT \
  -H "X-API-KEY: ${admin_key}" \
  -d '{
    "id": "ip-restriction-route",
    "uri": "/anything",
    "plugins": {
      "ip-restriction": {
        "whitelist": [
          "192.168.1.241"
        ]
      },
      "real-ip": {
        "source": "arg_realip"
      }
    },
    "upstream": {
      "type": "roundrobin",
      "nodes": {
      "httpbin.org:80": 1
      }
    }
  }'

Send a request to the Route:

shell

curl -i "http://127.0.0.1:9080/anything?realip=192.168.1.241"

You should receive an HTTP/1.1 200 OK response.

Send another request with a different IP address:

shell

curl -i "http://127.0.0.1:9080/anything?realip=192.168.10.24"

You should receive an HTTP/1.1 403 Forbidden response.