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Full Discussion: Adding new iptables
Top Forums Shell Programming and Scripting Adding new iptables Post 302244434 by era on Wednesday 8th of October 2008 03:14:17 AM
Old 10-08-2008
Or with sed:

Code:
sed '/-A INPUT -j REJECT --reject-with icmp-host-prohibited/i\
-A INPUT -p udp -m udp --dport 27020 -j ACCEPT' file >newfile

There are different dialects of sed so you might need to experiment a bit -- the backslash might or might not be necessary.
 

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LEARN ABOUT CENTOS

tapset::udp

tapset::udp(3stap)														tapset::udp(3stap)

NAME

       tapset::udp - systemtap udp tapset

DESCRIPTION

	This family of probe points is used to probe events that occur in the UDP layer.

       udp.sendmsg
	      Fires whenever a process sends a UDP message

	       See probe::udp.sendmsg(3stap)
	       for details.

       udp.sendmsg.return
	      Fires whenever an attempt to send a UDP message is completed

	       See probe::udp.sendmsg.return(3stap)
	       for details.

       udp.recvmsg
	      Fires whenever a UDP message is received

	       See probe::udp.recvmsg(3stap)
	       for details.

       udp.recvmsg.return
	      Fires whenever an attempt to receive a UDP message received is completed

	       See probe::udp.recvmsg.return(3stap)
	       for details.

       udp.disconnect
	      Fires when a process requests for a UDP disconnection

	       See probe::udp.disconnect(3stap)
	       for details.

       udp.disconnect.return
	      UDP has been disconnected successfully

	       See probe::udp.disconnect.return(3stap)
	       for details.

SEE ALSO

	  probe::udp.sendmsg(3stap),	  probe::udp.sendmsg.return(3stap),	 probe::udp.recvmsg(3stap),    probe::udp.recvmsg.return(3stap),
       probe::udp.disconnect(3stap),  probe::udp.disconnect.return(3stap),  stap(1), stapprobes(3stap)

IBM
									---							tapset::udp(3stap)
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