diff --git a/dlms_cosem/connection.py b/dlms_cosem/connection.py
index f230544..b867eec 100644
--- a/dlms_cosem/connection.py
+++ b/dlms_cosem/connection.py
@@ -214,6 +214,11 @@ class DlmsConnection:
             factory=DlmsConnectionSettings
         ))
 
+    # The user_information field that was carried in AARQ
+    # For internal use only. If you want to change the proposed parameters,
+    # see conformance and max_pdu_size arguments
+    initiate_request: Optional[xdlms.InitiateRequest] = attr.ib(default=None)
+
     @classmethod
     def with_pre_established_association(
             cls,
@@ -525,6 +530,15 @@ def unprotect(self, event):
         if isinstance(
                 event, (acse.ApplicationAssociationResponse, acse.ReleaseResponse)
         ):
+            """
+            TODO: When RLRE check that it contains the same protected InitiateResponse that in AARE.
+                  From "DLMS UA 1000-2 Ed. 10 - 9.3.3 The COSEM-RELEASE service":
+                      If the xDLMS InitiateRequest APDU can be successfully deciphered, then the .response primitive shall
+                      carry the same Negotiated_xDLMS_Context parameter as in the COSEM -OPEN.response primitive. It
+                      is carried by the xDLMS InitiateResponse APDU, protected the same way as in the AARE and placed
+                      in the user-information field of the RLRE APDU.
+            """
+
             if event.user_information:
                 if isinstance(
                         event.user_information.content,
@@ -576,6 +590,9 @@ def get_aarq(self) -> acse.ApplicationAssociationRequest:
             client_max_receive_pdu_size=self.max_pdu_size,
         )
 
+        # later used for release request
+        self.initiate_request = initiate_request
+
         return acse.ApplicationAssociationRequest(
             ciphered=ciphered_apdus,
             system_title=self.client_system_title,
@@ -589,14 +606,25 @@ def get_rlrq(self) -> acse.ReleaseRequest:
         Returns a ReleaseRequestApdu to release the current association if one should be used.
         """
 
-        initiate_request = xdlms.InitiateRequest(
-            proposed_conformance=self.conformance,
-            client_max_receive_pdu_size=self.max_pdu_size,
-        )
+        user_information=None
+        if self.use_protection:
+            """
+            From DLMS UA 1000-2 Ed. 10 - 9.3.3 The COSEM-RELEASE service:
+                The Proposed_xDLMS_Context parameter is conditional. It is present only if the value of the
+                Use_RLRQ_RLRE is TRUE and the AA to be released has been established with an application context
+                using ciphering. This option allows securing the COSEM-RELEASE service, and avoiding thereby a
+                denial-of-service attack that may be carried out by unauthorized releasing of the AA.
+
+                In the .request primitive, the Proposed_xDLMS_Context parameter shall be the same as in the
+                COSEM-OPEN.request service primitive, having established the AA to be released. It is carried by the
+                xDLMS InitiateRequest APDU, protected the same way as in the AARQ and placed in the user-
+                information field of the RLRQ APDU.
+            """
+            user_information=acse.UserInformation(content=self.initiate_request)
 
         return acse.ReleaseRequest(
             reason=enums.ReleaseRequestReason.NORMAL,
-            user_information=acse.UserInformation(content=initiate_request),
+            user_information=user_information
         )
 
     def update_negotiated_parameters(