5:18 a.m.
Hi there,
I'm having a hard time trying to get ip restriction working behind an nginx reverse
proxy on Keycloak 4.3
I have configured an ip filter as per
https://www.keycloak.org/docs/4.3/server_admin/#ip-restriction
<https://www.keycloak.org/docs/4.3/server_admin/#ip-restriction>
<subsystem xmlns="urn:jboss:domain:undertow:4.0">
<buffer-cache name="default"/>
<server name="default-server">
<ajp-listener name="ajp" socket-binding="ajp"/>
<http-listener name="default" socket-binding="http"
redirect-socket="https" proxy-address-forwarding="true"
enable-http2="true"/>
<https-listener name="https" socket-binding="https"
security-realm="ApplicationRealm" proxy-address-forwarding="true"
enable-http2="true"/>
<host name="default-host" alias="localhost">
<location name="/" handler="welcome-content"/>
<http-invoker security-realm="ApplicationRealm"/>
<filter-ref name="ipAccess"/>
</host>
</server>
<filters>
<expression-filter name="ipAccess"
expression="path-prefix('/auth/admin') ->
ip-access-control(acl={'10.10.10.10 allow'})"/>
</filters>
<servlet-container name="default">
<jsp-config/>
<websockets/>
</servlet-container>
<handlers>
<file name="welcome-content"
path="${jboss.home.dir}/welcome-content"/>
</handlers>
</subsystem>
and my nginx server block
server {
listen 443 ssl;
server_name keycloak.example.com <http://keycloak.example.com/>;
location / {
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_pass https://keycloak-prx.example.com
<https://keycloak-prx.example.com/>;
}
}
This works as intended when I request it directly, however when I try to access via nginx
reverse proxy I get a 403 regardless of the ip I set in the ip-access-control filter,
whether I have the host ip, or the proxy or gateway.
Undertow debug shows that the correct ip's (as far as I understand that it should be)
are being passed by nginx
10:03:29,564 DEBUG [io.undertow.request] (default I/O-2) Matched prefix path /auth for
path /auth/
10:03:29,565 DEBUG [io.undertow.request.security] (default task-3) Authentication result
was ATTEMPTED for HttpServerExchange{ GET /auth/ request {X-Real-IP=[10.10.10.20],
accept=[text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8],
X-Amzn-Trace-Id=[Root=1-5b9b8771-70fa72df4ef4bf816434fcc5],
accept-language=[en-US,en;q=0.9], accept-encoding=[gzip, deflate, br],
user-agent=[Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML,
like Gecko) Chrome/68.0.3440.106 Safari/537.36], Connection=[close],
X-Forwarded-Proto=[https], X-Forwarded-Port=[443], X-Forwarded-For=[10.10.10.10,
10.10.10.20], cookie=[_ga=GA1.2.1510178336.1525250562;
ajs_user_id=%22ca89cde3-6cac-4197-a5ad-aa966295c66d%22;
ajs_anonymous_id=%2228cb540a-cb21-4200-a531-64b11ef909d8%22;
ajs_group_id=%22customer%3A1%22], upgrade-insecure-requests=[1],
Host=[keycloak.example.com <http://keycloak.example.com/>]} response {}}
but I do not get any debug logs for matches for /auth/admin, I only get an entry
09:42:47,387 DEBUG [io.undertow.request] (default I/O-2) Matched prefix path /auth/admin
for path /auth/admin/
and no subsequent security logs for that request
Have I misconfigured something or could this be a bug?
Is there any steps that I can take to debug this further?
my debug settings are
<subsystem xmlns="urn:jboss:domain:logging:3.0">
<console-handler name="CONSOLE">
<level name="DEBUG"/>
<formatter>
<named-formatter name="COLOR-PATTERN"/>
</formatter>
</console-handler>
...
<logger category="io.undertow">
<level name="DEBUG"/>
</logger>
...
</subsystem>
all else is INFO
Would really appreciate any help at all on this
thanks
Derek