From: Jung, Jin (jin.jung@lmco.com)
Date: Mon Jun 16 2003 - 10:34:40 GMT-3
This command disables local broadcast on that segments.
You want to disable this to prevent some sort of DOS attack on your network,
With this command enables, someone can ping or send packets to broadcast
address,
Let's say 172.16.90.0/24 network local broadcast address is 172.16.90.255.
In some case you need to enable this command, -- multicast, bootP,....
Jin jung....
-----Original Message-----
From: Chen Kwong Wai William [mailto:kwchen@netvigator.com]
Sent: Monday, June 16, 2003 5:11 AM
To: ccielab@groupstudy.com
Subject: ip directed-broadcast
Dear all,
Can anyone kindly explain to me what actually does, if I configure "no
ip directed-broadcast" on an Interface? Thx a lot.
For example:
(192.168.1.0/24) - (E0) Router (E1) - (192.168.2.0/24)
Suppose, if directed broadcast is enable on E0, but disabled on E1,
then:
1) From 192.168.1.0, "ping 192.168.2.255" will be blocked?
2) From 192.168.2.0, "ping 192.168.1.255" will be blocked?
Best Regards,
William Chen
Best Regards,
William Chen
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