fixes small fail2topic vulnerability

code/controllers/subsystem/fail2topic.dm

@@ -44,7 +44,19 @@ SUBSYSTEM_DEF(fail2topic)
 /datum/controller/subsystem/fail2topic/Shutdown()
 	DropFirewallRule()
 
+/datum/controller/subsystem/fail2topic/CanProcCall(procname)
+	. = ..()
+	if(.)
+		switch(procname)
+			if("IsRateLimited")
+				return FALSE
+			if("BanFromFirewall")
+				return FALSE
+
 /datum/controller/subsystem/fail2topic/proc/IsRateLimited(ip)
+	if(IsAdminAdvancedProcCall())
+		return FALSE
+
 	var/last_attempt = rate_limiting[ip]
 
 	var/static/datum/config_entry/keyed_list/topic_rate_limit_whitelist/cached_whitelist_entry
@@ -82,6 +94,8 @@ SUBSYSTEM_DEF(fail2topic)
 /datum/controller/subsystem/fail2topic/proc/BanFromFirewall(ip)
 	if (!enabled)
 		return
+	if(IsAdminAdvancedProcCall())
+		return
 
 	active_bans[ip] = REALTIMEOFDAY
 	fail_counts -= ip