diff --git a/src/primaite/acl/access_control_list.py b/src/primaite/acl/access_control_list.py
index 3b0e9234..7e90724a 100644
--- a/src/primaite/acl/access_control_list.py
+++ b/src/primaite/acl/access_control_list.py
@@ -116,3 +116,27 @@ class AccessControlList:
         rule = ACLRule(_permission, _source_ip, _dest_ip, _protocol, str(_port))
         hash_value = hash(rule)
         return hash_value
+
+    def get_relevant_rules(self, _source_ip_address, _dest_ip_address, _protocol, _port):
+        """Get all ACL rules that relate to the given arguments.
+
+        :param _source_ip_address: the source IP address to check
+        :param _dest_ip_address: the destination IP address to check
+        :param _protocol: the protocol to check
+        :param _port: the port to check
+        :return: Dictionary of all ACL rules that relate to the given arguments
+        :rtype: Dict[str, ACLRule]
+        """
+        relevant_rules = {}
+
+        for rule_key, rule_value in self.acl.items():
+            if self.check_address_match(rule_value, _source_ip_address, _dest_ip_address):
+                if (
+                    rule_value.get_protocol() == _protocol or rule_value.get_protocol() == "ANY" or _protocol == "ANY"
+                ) and (
+                    str(rule_value.get_port()) == str(_port) or rule_value.get_port() == "ANY" or str(_port) == "ANY"
+                ):
+                    # There's a matching rule.
+                    relevant_rules[rule_key] = rule_value
+
+        return relevant_rules
diff --git a/src/primaite/agents/utils.py b/src/primaite/agents/utils.py
index 8c59faf7..b5a3c673 100644
--- a/src/primaite/agents/utils.py
+++ b/src/primaite/agents/utils.py
@@ -165,7 +165,8 @@ def transform_change_obs_readable(obs):
     os_states = [SoftwareState(i).name for i in obs[:, 2]]
     new_obs = [ids, operating_states, os_states]
 
-    for service in range(3, obs.shape[1]):
+    # changed range(3,...) to range(4,...) because we added file system which was new since ADSP
+    for service in range(4, obs.shape[1]):
         # Links bit/s don't have a service state
         service_states = [SoftwareState(i).name if i <= 4 else i for i in obs[:, service]]
         new_obs.append(service_states)