<div class="content"><p> </p><p>The RRPC_FWAddConnectionSecurityRule method requests the
server to add the connection security rule in the policy contained in the
policy store that is referenced by the specified opened policy store handle.</p><dl>
<dd>
<div><pre> ULONG RRPC_FWAddConnectionSecurityRule(
   [in] FW_CONN_HANDLE rpcConnHandle,
   [in] FW_POLICY_STORE_HANDLE hPolicy,
   [in] PFW_CS_RULE2_0 pRule
 );
</pre></div>
</dd></dl><p><b>rpcConnHandle: </b>This parameter is an <span><a href="d891304d-92d8-4f9f-9e60-a1f02b28ae30#gt_8a7f6700-8311-45bc-af10-82e10accd331" data-linktype="relative-path">RPC</a></span>
binding handle that connects to the RPC interface of the Firewall and Advanced
Security Protocol.</p><p><b>hPolicy: </b>This input parameter is an <span><a href="88f6ea4a-a946-4747-bb93-f142f1760752" data-linktype="relative-path">FW_POLICY_STORE_HANDLE</a></span>
data type. The data type MUST contain an opened policy store handle that is
successfully opened by using the RRPC_FWOpenPolicyStore (Opnum 0) method. The
handle MUST have read/write access rights.</p><p><b>pRule: </b>This parameter represents the
connection security rule that the client wants to add to the store. The rule
MUST be a valid rule, as specified in the definition of the <span><a href="18277e4c-628d-4423-9fe3-ba98601ba50d" data-linktype="relative-path">FW_CS_RULE2_0</a></span>
data type.</p><p><b>Return Values: </b>This method returns 0 if
successful; if it fails, it returns a nonzero error code. The field can take
any specific error code value, as specified in <span><a href="../ms-erref/1bc92ddf-b79e-413c-bbaa-99a5281a6c90" data-linktype="relative-path">[MS-ERREF]</a></span>.
The following return values are common.</p><dl>
<dd>
<table><thead>
  <tr>
   <th>
   <p>Return value/code</p>
   </th>
   <th>
   <p>Description</p>
   </th>
  </tr>
 </thead><tbody><tr>
  <td>
  <p>0x000000B7</p>
  <p>ERROR_ALREADY_EXISTS</p>
  </td>
  <td>
  <p>The specified rule has a rule ID that already exists
  in the specified store.</p>
  </td>
 </tr><tr>
  <td>
  <p>0x00000032</p>
  <p>ERROR_NOT_SUPPORTED</p>
  </td>
  <td>
  <p>The specified store does not support this method; the
  store might be read-only.</p>
  </td>
 </tr><tr>
  <td>
  <p>0x00000005</p>
  <p>ERROR_ACCESS_DENIED</p>
  </td>
  <td>
  <p>The <i>hPolicy</i> handle was not opened with
  read/write access rights. The error is also returned if the client does not
  have the required credentials to call the method.</p>
  </td>
 </tr><tr>
  <td>
  <p>0x00000057</p>
  <p>ERROR_INVALID_PARAMETER</p>
  </td>
  <td>
  <p>A parameter of this method is incorrect, or is
  required and not specified. This error can be returned because:</p>
  <ul><li><p><span><span>  
  </span></span><span>The <i>pRule</i> object did not
  pass the connection security rule validations specified in the definition of
  the <span><a href="0d064110-5f2e-4b68-aa63-032c6cd5e4c6" data-linktype="relative-path">FW_CS_RULE</a></span> data
  type.</span></p>
  </li><li><p><span><span>  
  </span></span><span>The rule has a phase 2 crypto set
  that specified FW_CRYPTO_PRPTOCOL_AUTH_NO_ENCAP (see section <span><a href="d97bac36-03e8-4215-9984-f2fbddd66be0" data-linktype="relative-path">2.2.69</a></span>),
  and it is a tunnel mode rule, or it also has an <b>AuthSet</b> structure
  (section <span><a href="bbec7ab7-0a1d-49a4-9c8e-a4784bbe6f16" data-linktype="relative-path">2.2.65</a></span>) that
  specifies a preshared key auth method.</span></p>
  </li><li><p><span><span>  
  </span></span><span>A required value is not
  specified.</span></p>
  </li></ul></td>
 </tr></tbody></table>
</dd></dl><p><b>Exceptions Thrown:</b> No exceptions are thrown
except those that are thrown by the underlying RPC protocol, as specified in <span><a href="../ms-rpce/290c38b1-92fe-4229-91e6-4fc376610c15" data-linktype="relative-path">[MS-RPCE]</a></span>.
If any lower-layer errors are reported by RPC exception, this exception is converted
to an error code and reported to higher-layer protocols via the return value.</p><p>This method adds a connection security rule in the
connection security link list of the memory representation of the store being
modified. It also writes through and saves the rule to disk. If called on an
online store, the connection security rule is also enforced.</p><p>The server MUST validate that the client is authorized to
perform the requested operation (as defined in section <span><a href="b0c93352-8371-4d63-abca-b0cc8dbcc3d7" data-linktype="relative-path">3.1.4</a></span>)
before executing this method.</p></div>