# IPWhiteList Limiting Clients to Specific IPs {: .subtitle } ![IpWhiteList](../assets/img/middleware/ipwhitelist.png) IPWhitelist accepts / refuses requests based on the client IP. ## Configuration Examples ```yaml tab="Docker" # Accepts request from defined IP labels: - "traefik.http.middlewares.test-ipwhitelist.IPWhiteList.SourceRange=127.0.0.1/32, 192.168.1.7" ``` ```yaml tab="Kubernetes" apiVersion: traefik.containo.us/v1alpha1 kind: Middleware metadata: name: test-ipwhitelist spec: ipWhiteList: sourceRange: - 127.0.0.1/32 - 192.168.1.7 ``` ```json tab="Marathon" "labels": { "traefik.http.middlewares.test-ipwhitelist.IPWhiteList.SourceRange": "127.0.0.1/32,192.168.1.7" } ``` ```yaml tab="Rancher" # Accepts request from defined IP labels: - "traefik.http.middlewares.test-ipwhitelist.IPWhiteList.SourceRange=127.0.0.1/32, 192.168.1.7" ``` ```toml tab="File" # Accepts request from defined IP [http.middlewares] [http.middlewares.test-ipwhitelist.ipWhiteList] sourceRange = ["127.0.0.1/32", "192.168.1.7"] ``` ## Configuration Options ### `sourceRange` The `sourceRange` option sets the allowed IPs (or ranges of allowed IPs). ### `ipStrategy` The `ipStrategy` option defines two parameters that sets how Traefik will determine the client IP: `depth`, and `excludedIPs`. #### `ipStrategy.depth` The `depth` option tells Traefik to use the `X-Forwarded-For` header and take the IP located at the `depth` position (starting from the right). !!! note "Examples of Depth & X-Forwarded-For" If `depth` was equal to 2, and the request `X-Forwarded-For` header was `"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1"` then the "real" client IP would be `"10.0.0.1"` (at depth 4) but the IP used for the whitelisting would be `"12.0.0.1"` (`depth=2`). ??? note "More examples" | `X-Forwarded-For` | `depth` | clientIP | |-----------------------------------------|---------|--------------| | `"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1"` | `1` | `"13.0.0.1"` | | `"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1"` | `3` | `"11.0.0.1"` | | `"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1"` | `5` | `""` | ```yaml tab="Docker" # Whitelisting Based on `X-Forwarded-For` with `depth=2` labels: - "traefik.http.middlewares.testIPwhitelist.ipWhiteList.SourceRange=127.0.0.1/32, 192.168.1.7" - "traefik.http.middlewares.testIPwhitelist.ipwhitelist.ipstrategy.depth=2" ``` ```yaml tab="Kubernetes" # Whitelisting Based on `X-Forwarded-For` with `depth=2` apiVersion: traefik.containo.us/v1alpha1 kind: Middleware metadata: name: testIPwhitelist spec: ipWhiteList: SourceRange: - 127.0.0.1/32 - 192.168.1.7 ipstrategy: depth: 2 ``` ```yaml tab="Rancher" # Whitelisting Based on `X-Forwarded-For` with `depth=2` labels: - "traefik.http.middlewares.testIPwhitelist.ipWhiteList.SourceRange=127.0.0.1/32, 192.168.1.7" - "traefik.http.middlewares.testIPwhitelist.ipwhitelist.ipstrategy.depth=2" ``` ```toml tab="File" # Whitelisting Based on `X-Forwarded-For` with `depth=2` [http.middlewares] [http.middlewares.test-ipwhitelist.ipWhiteList] sourceRange = ["127.0.0.1/32", "192.168.1.7"] [http.middlewares.test-ipwhitelist.ipWhiteList.ipStrategy] depth = 2 ``` !!! note - If `depth` is greater than the total number of IPs in `X-Forwarded-For`, then the client IP will be empty. - `depth` is ignored if its value is is lesser than or equal to 0. #### `ipStrategy.excludedIPs` `excludedIPs` tells Traefik to scan the `X-Forwarded-For` header and pick the first IP not in the list. !!! note "Examples of ExcludedIPs & X-Forwarded-For" | `X-Forwarded-For` | `excludedIPs` | clientIP | |-----------------------------------------|-----------------------|--------------| | `"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1"` | `"12.0.0.1,13.0.0.1"` | `"11.0.0.1"` | | `"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1"` | `"15.0.0.1,13.0.0.1"` | `"12.0.0.1"` | | `"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1"` | `"10.0.0.1,13.0.0.1"` | `"12.0.0.1"` | | `"10.0.0.1,11.0.0.1,12.0.0.1,13.0.0.1"` | `"15.0.0.1,16.0.0.1"` | `"13.0.0.1"` | | `"10.0.0.1,11.0.0.1"` | `"10.0.0.1,11.0.0.1"` | `""` | !!! important If `depth` is specified, `excludedIPs` is ignored. ```yaml tab="Docker" # Exclude from `X-Forwarded-For` labels: - "traefik.http.middlewares.test-ipwhitelist.ipwhitelist.ipstrategy.excludedIPs=127.0.0.1/32, 192.168.1.7" ``` ```yaml tab="Kubernetes" # Exclude from `X-Forwarded-For` apiVersion: traefik.containo.us/v1alpha1 kind: Middleware metadata: name: test-ipwhitelist spec: ipWhiteList: ipstrategy: excludedIPs: - 127.0.0.1/32 - 192.168.1.7 ``` ```yaml tab="Rancher" # Exclude from `X-Forwarded-For` labels: - "traefik.http.middlewares.test-ipwhitelist.ipwhitelist.ipstrategy.excludedIPs=127.0.0.1/32, 192.168.1.7" ``` ```toml tab="File" # Exclude from `X-Forwarded-For` [http.middlewares] [http.middlewares.test-ipwhitelist.ipWhiteList] [http.middlewares.test-ipwhitelist.ipWhiteList.ipStrategy] excludedIPs = ["127.0.0.1/32", "192.168.1.7"] ```