Estoy tratando de consumir un servicio tranquilo que da error

Error = Error Dominio = NSURLErrorDomain Código = -1202 "El certificado para este servidor no es válido. Es posible que se esté conectando a un servidor que pretende ser" xxx.xxx.xxx.xxx "y que podría poner en riesgo su información confidencial".

trabajando en xCode 4.2, donde falta el error o algún paso.

usando el siguiente código

RegistroUsuario.f

@interface RegisterUser : UIViewController<UITextFieldDelegate,
UIScrollViewDelegate, NSURLConnectionDelegate>

RegistrarUsuario.m

- (IBAction)SubmitBtnAction:(id)sender {

    NSURL *url = [NSURL URLWithString:@"https://xx.xx.xx.xxx:8223/jaxrs/tunedoorgateway/getCountries"];
    NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];

    [NSURLConnection sendAsynchronousRequest:urlRequest queue:[[NSOperationQueue alloc] init]
     completionHandler:^(NSURLResponse *response, NSData *data, NSError *error)
     {

         if ([data length] >0 && error == nil)
         {
             NSLog(@"Data = %@", data);
             // DO YOUR WORK HERE

         }
         else if ([data length] == 0 && error == nil)
         {
             NSLog(@"Nothing was downloaded.");
         }
         else if (error != nil){
             NSLog(@"Error = %@", error);
         }

     }];

}


- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace {
    NSLog(@"This is canAuthenticateAgainstProtectionSpace");
    return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];
}


- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge
{
//    if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust])
//        if ([trustedHosts containsObject:challenge.protectionSpace.host])
            [challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];

    [challenge.sender continueWithoutCredentialForAuthenticationChallenge:challenge];
    NSLog(@"This is didReceiveAuthenticationChallenge");
  //  [[challenge sender] cancelAuthenticationChallenge:challenge];
}