traefik/docs/content/middlewares/ipwhitelist.md
2019-03-29 12:34:05 +01:00

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# 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.Middleware9.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-Forwaded-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` | `""` |
??? example "File -- Whitelisting Based on `X-Forwarded-For` with `depth=2`"
```toml
[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
```
??? example "Docker -- Whitelisting Based on `X-Forwarded-For` with `depth=2`"
```yml
a-container:
image: a-container-image
labels:
- "traefik.http.middlewares.testIPwhitelist.ipWhiteList.SourceRange=127.0.0.1/32, 192.168.1.7"
- "traefik.http.middlewares.testIPwhitelist.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-Forwaded-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.
??? example "File -- Exclude from `X-Forwarded-For`"
```toml
[http.middlewares]
[http.middlewares.test-ipwhitelist.ipWhiteList]
[http.middlewares.test-ipwhitelist.ipWhiteList.ipStrategy]
excludedIPs = ["127.0.0.1/32", "192.168.1.7"]
```
??? example "Docker -- Exclude from `X-Forwarded-For`"
```yml
a-container:
image: a-container-image
labels:
- "traefik.http.middlewares.testIPwhitelist.ipwhitelist.ipstrategy.excludedIPs=127.0.0.1/32, 192.168.1.7"
```