Sign up for a free GitHub account to open an issue and contact its maintainers and the community. [ ] Developer Infrastructure. 2.I have created namespace x with istio-injection enabled and deployed httpbin here. EKS v1.15 It does for me. Second, the server has to keep the session information, making itself not stateless, unless a state store such as memcached is introduced. It can be thought of as a document (in JSON format) with signature for web servers to exchange information. If you provide a token in the authorization header, its implicitly default location, Istio validates the token using the public key set, and rejects requests if the bearer token is invalid. Consequently, authorization policies that specify HTTP parameters will not work. Istio helps Kubernetes bridge that gap. Istio authorization policy not applying on child gateway, https://github.com/istio/istio/issues/22341, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. Can you throw some light on how you have fixed your issue? The text was updated successfully, but these errors were encountered: I suspect this might be related to AWS, +@xulingqing for further debugging. By clicking Sign up for GitHub, you agree to our terms of service and Kubernetes with Istio Ingress Not Running on Standard HTTP Ports 443/80, Istio + Kubernetes: Gateway more than one TLS Certificate, You're speaking plain HTTP to an SSL-enabled server port in Kubernetes, Kubeflow 1.2 not working with AWS incognito complains about user pool client but worked with kubeflow 1.0, Accessing HTTPS Istio Ingress Gateway from Pod. Does activating the pump in a vacuum chamber produce movement of the air inside? When it is presented to Istio, Istios RequestAuthentication CRD needs the public key of the issuer in order to validate the JWT. [ ] Extensions and Telemetry While Istio itself does not perform user authentication, its support of JWT in RequestAuthentication allows a workload to integrate with external identity provider. Then, it can use the claims in JWT token to drive authorization decision on whether the specific request is allowed or denied. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. to your account, AuthorizationPolicy for source IP does not work for IP whitelisting, [ ] Docs Applications running on Kubernetes platform seeks to offload common non-business features to the platform. For migrating workload without sidecar, a Pod without sidecar may connect with one in the mesh (with sidecar) if the mtls mode is PERMISSIVE in Peer Authentication. This capability, along with creative use of claims in JWT, also empowers authorization capability. How can we create psychedelic experiences for healthy people without drugs? Although JWT addresses the authenticity of information, it does not intend to address the confidentiality of the payload at HTTP layer. The signature portion makes it friendly for document consumers to validate the authenticity. Both will use Istio CRDs. We can accomplish this fine-grained control with an AuthorizationPolicy after we flow internally originated outbound traffic to the Egress gateway making act as a proxy with the help of VirtualService, Gateway, DestinationRule resources along with ServiceEntry s on how outbound traffic should flow. Thanks Jakub. This kind of access control is enforced at the application layer by the Envoy sidecar proxies. The evaluation is determined by the following rules: It can also make use of additional data about the request's context; we can load any data into OPA and use it during policy evaluation. It can help with two other things with the use of JWT token: when a web request presents a JWT token, it can validate whether it is authentic. We have MTLS enforced everywhere and a deny-all type of policy for both. When I deny the first Client IP using the AuthorizationPolicy, it does nothing. In this lab I use my own DNS hostname demo1 . Have a question about this project? According to its documentation, enforcing mTLS at mesh level is as simple as applying a Peer Authentication resource to the root-level namespace: The role of mTLS is so Pods can validates each others identity and then encrypt the TLS traffic in between. You signed in with another tab or window. Istios CRD can front the service provider and validate that the presented JWT is authentic. I have a primary ingress GW called istio-ingressgateway which works for services. This process does not involve checking users identity, even though users identity could be stored in the payload by the JWT issuer. Istio can perform request authentication using its CRD. Istio Authorization Policy enables access control on workloads in the mesh. The solution I pointed out may help someone more experienced with Istio. AuthorizationPolicy should support source field with namespace and principals. For new services, this is usually not an issue. Take a look at below steps I made. To learn more, see our tips on writing great answers. the following authorization policy denies all requests on httpbin in x namespace. Apart from HTTP fields, path, authenticated claims in JWT, Istio Authorization can also integrate with an Open Policy Agent (OPA) to drive actions, in advanced use cases. I guess the reason why its stop working when in non ingress pod is because the sourceIP attribute will not be the real client IP then. Running on GKE: [2020-10-27T22:33:53.976Z] "HEAD / HTTP/1.1" 200 - "-" "-" 0 0 2 1 "78.56.22.31, 34.98.113.196,35.191.2.7" "curl/7.64.0" "603af9ed-30b3-49b7-8b52-6aafa255db4e" "argocd.my.domain.io" "10.60.2.38:8080" outbound|80||argocd-server.argocd.svc.cluster.local 10.60.3.40:37384 10.60.3.40:8080 35.191.2.7:57013 -. https://discuss.istio.io/t/ip-whitelisting-with-authorizationpolicy-in-eks/5618. If the traffic is HTTP then you should consider use some HTTP level information as it provides a lot more flexibility. 2.I have created namespace x with istio-injection enabled and deployed httpbin here. When access control is enabled, the default behavior is deny (deny-by-default) which means requests to the workload will be rejected if the request is not allowed by any of the authorization policies selecting the workload. I've installed istio 1.5 with default profile with egress gateway enabled. How to distinguish it-cleft and extraposition? Authorization Policy Istio's Authorization Policy by itself can operate at both TCP or HTTP layers and is enforced at the envoy proxy. How was Istio installed? Is it considered harrassment in the US to call a black man the N-word? Well occasionally send you account related emails. 2 comments edited by istio-policy-bot istio-policy-bot added the area/extensions and telemetry label on Feb 19, 2020 @catman002 It looks like the client IP is not preserved in your environment and the task (https://istio.io/docs/tasks/security/authorization/authz-ingress/) is working as expected. Expected behavior Istio has been designed from scratch keeping Kubernetes in mind. There is related github issue about that. This is outside of Istios capability but many off-the-shelf solution excels at it, such as Azure AD. I've set up sample app and configured istio as: apiVersion: v1 kind: Name. Currently AuthorizationPolicy only supports "ALLOW" action. https://istio.io/docs/tasks/security/authorization/authz-ingress/. Thanks for contributing an answer to Stack Overflow! I would prefer to use the AuthorizationPolicy, it's far more simple, but it looks like it doesn't work on EKS clusters. You signed in with another tab or window. It gives each workload an identity in the format of
/ns//sa/. Istios Authorization Policy by itself can operate at both TCP or HTTP layers and is enforced at the envoy proxy. One weird thing that we have found is that under the new policy Prometheus scrapes of our pods on a non-service port (configured by prometheus.ioanotations) and scrapes of the Envoy metrics port 15090 are now blocked by the AuthorizationPolicy where they were not before. 2 comments brunooliveiramac commented on Jan 13, 2021 howardjohn added area/security kind/docs labels on Feb 16, 2021 istio-policy-bot added the lifecycle/stale label on Apr 13, 2021 Below is an example of a basic RequestAuthentication declaration: In this example (from the documentation), the jwtRule requires that the issuer be issuer-foo, and the JWK (containing public key) is provided by a given URI address. Authorization policy supports CUSTOM, DENY and ALLOW actions for access control. [ ] Test and Release If not, I can work on verify that guide on AWS. With the creation of a sticky session , we want to achieve that all subsequent requests finish within a matter of microseconds, instead of taking 5 seconds. Istio will pass the authentication once the signature in the presented JWT is verified with the JWK. And at some point of time if you decide not to use Istio, you can. I have tried above envoy filter on my test cluster and as far as I can see it's working. What I currently have does not work. Have a question about this project? Loadbalancer: ELB. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. According to https://github.com/istio/istio/issues/22341 7, (not done yet) this aims at providing better support without setting k8s externalTrafficPolicy to local, and supports CIDR range as well. As far as I know you should rather use AuthorizationPolicy in 3 ways. I would prefer to use the AuthorizationPolicy, it's far more simple, but it looks like it doesn't work on EKS clusters. With your AuthorizationPolicy object, you have two rules in the namespace bar: Allow any request coming from foo namespace; with service account sleep to any service. Istio will concatenate the iss and sub fields of the JWT with a / separator which will form the principal of the request. What exactly makes a black hole STAY a black hole? [ ] User Experience Ipblocks" for istio-ingressgateway does not work, because the real IP of the customer cannot be obtained. demo1.digihunch.com Text is not SVG - cannot display. Hi, It looks like it, but I was unable to make it work. Making statements based on opinion; back them up with references or personal experience. When I deny the second client ip, it denies all connections, as expected if we are denying the load balancer internal ip address. The sticky session settings can be configured in a destination rule for the service. Even when operating at HTTP layer, AuthorizationPolicy does not have to work in conjunction with RequestAuthentication. Istio Authorization Policy enables access control on workloads in the mesh. @muthurajr mutual TLS should be enabled for using namespace and principals, Istio AuthorizationPolicy not working with if source filed is given. Sorry for my late reply. While that hasn't worked (I think the HTTPS ingress is meddling somewhere) it has really helped along my way to solving this problem. Ensure proxies enforce policies correctly, https://discuss.istio.io/t/ip-whitelisting-with-authorizationpolicy-in-eks/5618, https://istio.io/latest/docs/tasks/security/authorization/authz-ingress/. AuthorizationPolicy is not working when i'm mentioning source field with namespace, principals, Well occasionally send you account related emails. There is a task for your reference Ensure proxies enforce policies correctly. In user authentication, the identify provider typically looks up an identity store and compares password hash results to check whether the identity of the visiting user is authentic or not. I have tried to make it work on a specific gateway with annotations like you did, but I couldn't make it work for me. Update externalTrafficPolicy from Cluster to Local, Version (include the output of istioctl version --remote and kubectl version and helm version if you used Helm) [ ] Developer Infrastructure. Does the Fog Cloud spell work in conjunction with the Blind Fighting fighting style the way I think it does? Find centralized, trusted content and collaborate around the technologies you use most. Third, check the log and it should be the IP that you used to reach httpbin service throught ingress gateway. I also have another "primary" GW, the K8s ingress GW to support TLS (thought I'd include this, to be as explicit as possible). With mTLS all effective at the mesh level, there is no need to natively configure TLS between services. The evaluation is determined by the following rules: Then you would use this AuthorizationPolicy to deny all requests. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Best way to get consistent results when baking a purposely underbaked mud cake. Source. Istio is an open source and platform-independent service mesh that provides functionality for traffic management, policy enforcement and telemetry collection in Kubernetes application environments. Let me know if you have any more questions, I might be able to help. Some IAM protocols are built on top of JWT. apiVersion: "authentication.istio.io/v1alpha1" kind: "Policy" meta. Any ideas how to solve this would be more than welcome! Cloud: AWS And there is the main issue ,which is ipBlocks. Let's say you deny all requests on x namespace and allow only get requests for httpbin service. it only works with source field and ip range. In token-based authentication such as using JWT, a token is issued. JWT enables token-based authentication, a significant improvement from traditional session-based authentication. Istio uses the RequestAuthentication CRD to perform this function. The result is an ALLOW or DENY decision, based on a set of conditions at both levels. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. the following authorization policy denies all requests to workloads in namespace x. the following authorization policy denies all requests on ingress gateway. Note: I had to add my VPC CIDR (10.0.0.0/8). Could you try use $CLIENT_IP and ack me if it works. [x] Security I tried install istio using istioctl operator with your yaml and use istioctl version 1.6.7. To be fair I didn't try that hard. I have done the setup using istioctl operator as I have mentioned previously and the version is 1.6.7, its not working for me. rev2022.11.3.43005. Once the users identity is validated by identity provider, and a JWT is issued for downstream service providers to consume. [ ] Installation kubectl patch svc istio-ingressgateway -n istio-system -p ' {"spec": {"externalTrafficPolicy":"Local"}}'. Is there a way to make trades similar/identical to a university endowment manager to copy them? If you want and AND to be applied; meaning allow any request . Why: this is the first step in "locking down" a specific service to specific IPs/CIDRs. The SPIFFE identity used in PeerAuthentication can also be used in Request Authorization as rule conditions. Their base64 encoding can be decoded with no effort and should therefore be considered exposed. The payload of JWT consists of claims, which are statements about an identity (such as name, role, email). The evaluation is determined by the following rules: It is also important to understand that only Pods with injected Envoy sidecar have SPIFFE workload identity and therefore is able to speak in mTLS. to your account. So it is an OR, you are applying. Installed istio with istioctl on gke cluster , and tried authorization policy following this , https://istio.io/docs/tasks/security/authorization/authz-http/. privacy statement. Then a workaround with envoyfilter came from above istio discuss thread. From Istio 1.9, they have implemented extensibility into authorization policy by introducing a CUSTOM action, which allows you to delegate the access control decision to an external authorization . For example, the OpenID Connect specification also defines a set of standard claims that it uses while still allow custom claims. So it integrates seamlessly with any Kubernetes application. 2022 Moderator Election Q&A Question Collection. [ ] Performance and Scalability Why can we add/substract/cross out chemical equations for Hess law? I use example policies from istio docs. Drop me a line or contact me on LinkedIn. JSON Web Token (JWT, RFC 7519) is a format to carry JSON payload with optional signature and/or encryption. It authenticates the identity of a request (as truly issued by the trusted issuer without being tampered). When I followed the guide "Authorization on Ingress Gateway", I get two client ips in a list when executing this part: CLIENT_IP=$(curl "$INGRESS_HOST":"$INGRESS_PORT"/ip -s | grep "origin" | cut -d'"' -f 4) && echo "$CLIENT_IP". The JWT issuer signs with its private key and stores the signature in the JWT. Could you using envoy debug logging to verify whether your request is send with ip 52.24.252.78. When using AuthorizationPolicy CRD, keep in mind: For troubleshooting, we can check authorization policies effective on a Pod with: This returns the effective policies but does not necessarily indicate which rule is matched when a request is denied or allowed. May be I have done something wrong in the configurations. The JWK can be provided either inline in the RequestAuthentications YAML manifest, or via a URI. Hi, It looks like it, but I was unable to make it work. [x ] Networking To tackle this issue, there is JWE (JSON Web Encryption, RFC 7516) which is an implementation similar to JWT which also encrypts the payload. Authorization on Ingress Gateway A critical bug has been identified in Envoy that the proxy protocol downstream address is restored incorrectly for istio.io Loving the excalidraw tools to draw :D Istio should allow access to the service for requests made from the whitelisted IP as mentioned here. Using IstioOperator: Environment where bug was observed (cloud vendor, OS, etc) It can enforce mTLS communication, which is known as Peer Authentication.
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