To Next Page

To Previous Page

ip forward-protocol

SecureStack C2 Configuration Guide 19-13

broadcastonlyonthe30networkinterfa c ewillallowanyonefromanyothernetworks(10,20,40,

50)tosenddirectedbroadcasttothe30network.

Example

ThisexampleshowshowtoenableIPdirectedbroadcastsonVLAN1:

C2(su)->router(Config)#interface vlan 1

C2(su)->router(Config-if(Vlan 1))#ip directed-broadcast

ip forward-protocol

UsethiscommandtoenableUDPbroadcastforwardingandspecifywhichprotocolswillbe

forwarded .

Syntax

ip forward-protocol udp [port]

no ip forward-protocol udp [port]

Parameters

Defaults

Ifportisnotspecified,thefo llowingdefaultsareused:

•TrivialFileTransferProtocol(TFTP)(port69)

• DomainNamingSystem(port53)

•Timeservice(port37)

•NetBIOSNameServer(port137)

•NetBIOSDatagramServer(port138)

• TACACSservice(port49)

•EN‐116NameService(port42)

Mode

Routercommand,Globalconfiguration:C2(su)‐>router(Config)#

Routerinterfaceconfiguration:C2(su)‐>router(Config‐if(Vlan1)#

Usage

Inordertoactuallyforwardprotocols,youmustconfigureanIPhelperaddressontheindividual

routerinterfaceswiththe command“iphelper‐address”(page 19‐14).

Ifacertainserviceexistsinsidethenode,andthereisnoneedtoforwardtherequesttoremote

networks,the“no”formof

thiscommandshouldbeusedtodisabletheforwardingforthespecific

port.Suchrequestswillnotbeautomaticallyblockedfrombeingforwardedjustbecauseaservice

forthemexistsinthenode.

ThenoformofthiscommandremovesaUDPportorprotocol,disablingforwarding.

udp SpecifiesUDPasthe

IPforwardingprotocol.

port (Optional)SpecifiesadestinationportthatcontrolswhichUDPservices

areforwarded.

Enterasys SecureStack C2 C2G170-24 User Manual

Other manuals for Enterasys SecureStack C2 C2G170-24