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[IPV4]: Update icmp sysctl docs and disable broadcast ECHO/TIMESTAMP by default

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It's not a good idea to be smurf'able by default.
The few people who need this can turn it on.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2005-10-03 16:07:30 -07:00
parent 3e56a40bb3
commit 7ce312467e
2 changed files with 8 additions and 4 deletions
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10
Documentation/networking/ip-sysctl.txt
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@@ -355,10 +355,14 @@ ip_dynaddr - BOOLEAN
Default: 0
icmp_echo_ignore_all - BOOLEAN
If set non-zero, then the kernel will ignore all ICMP ECHO
requests sent to it.
Default: 0
icmp_echo_ignore_broadcasts - BOOLEAN
If either is set to true, then the kernel will ignore either all
ICMP ECHO requests sent to it or just those to broadcast/multicast
addresses, respectively.
If set non-zero, then the kernel will ignore all ICMP ECHO and
TIMESTAMP requests sent to it via broadcast/multicast.
Default: 1
icmp_ratelimit - INTEGER
Limit the maximal rates for sending ICMP packets whose type matches