c# - Restrict service to internal network BUT load balancer? -


in our servicestack (v3)-based api, have services internal use only, we've put [restrict(internalonly = true)] attribute on of our internal request dtos.

the problem use load balancing, , restricted services publicly accessible because ip calling api load balancer's ip, , therefore internal ip.

is there way circumvent this, internal services restricted internal ips except load balancer's ip?

i haven't seen built in way (see [restrict] tests) restrict based on specific ips. can trivially filter requests using custom attribute:

public class allowlocalexcludinglbattribute : requestfilterattribute {     public override void execute(ihttprequest req, ihttpresponse res, object requestdto)     {         // if request not local or belongs load balancer throw exception         if(!req.islocal || req.remoteip == "10.0.0.1")             throw new httperror(system.net.httpstatuscode.forbidden, "403", "service can accessed internally");     } }

then add [allowlocalexcludinglb] on services or action methods have otherwise used [restrict] attribute or use in conjunction other restrictions. replace 10.0.0.1 load balancer ip.


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