看板FB_security
标 题Re: FreeBSD DDoS protection
发信站Wha? (Sun Feb 10 21:44:45 2013)
转信站ptt!csnews.cs.nctu!news.cs.nctu!.cs.nctucs.nctu!!freebsdfreebsd.org!ow
On Sat, 2013-02-09 at 19:57 -0600,
[email protected] wrote:
>
> Deny all ICMP (drop I mean)
Please DON'T do this. ICMP is a required part of the TCP/IP suite.
It breaks Path MTU discovery, leading to oddball issues where some sites
can't load graphics, some file transfers break, etc.
It makes troubleshooting using traceroute not work.
If you don't want to get pinged, then drop echo request/reply. But
those are really pretty harmless.
--Chris
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