On 2018-08-30 12:12 p.m., James Knott via talk wrote:
On 08/30/2018 12:04 PM, Alvin Starr via talk wrote:
There are other ICMP messages that can be used for probing like
timestamp(msg-13).
All around all disabling ping does for you is to make it harder for
your ISP or IT support people to see if you are having network
problems and the really really stupid script kiddies trying to probe you.
There are some who advocate blocking ICMP entirely. As mentioned, it
can cause problems for legitimate testing and, on IPv6, cause failures.
At one time, a maliciously crafted packet could be used to do
buffer-overflow attacks. It hit Windows most recently, and many sites
turned off ICMP. This merely made it harder, and the script kiddies
promptly came up with new variants. To this day, Windows sites often
turn off ICMP, thinking the problem was with ping.
--dave
--
David Collier-Brown, | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
dav...@spamcop.net | -- Mark Twain
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