c# - Firewall port is out of range -

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code should correct, when run it, says port value out of range (i tried "6" or "1433", need). know wrong? 

try {     inetfwrule firewallrule = (inetfwrule)activator.createinstance(type.gettypefromprogid("hnetcfg.fwrule"));     firewallrule.action = net_fw_action_.net_fw_action_allow;     firewallrule.description = rule.text;     firewallrule.enabled = true;     firewallrule.interfacetypes = "all";     firewallrule.name = rule.text;      firewallrule.localports = port.text;     firewallrule.protocol = (int)net_fw_ip_protocol_.net_fw_ip_protocol_any;      inetfwpolicy2 firewallpolicy = (inetfwpolicy2)activator.createinstance(     type.gettypefromprogid("hnetcfg.fwpolicy2"));     firewallpolicy.rules.add(firewallrule); } catch (exception ex) {     messagebox.show(ex.tostring()); }


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