[Freeswitch-users] ICMP... and MTU
cesar.bermudez at gmail.com
Wed Feb 19 22:24:30 MSK 2014
Thx for your time and answers !!!!
On Wed, Feb 19, 2014 at 10:39 AM, Claus Andersen <clan at wheel.dk> wrote:
> On Wed, 19 Feb 2014, Claus Andersen wrote:
> > On Wed, 19 Feb 2014, Cesar Bermudez wrote:
> >> Sorry to ask, but ..
> > There are no stupid questions - only stupid answers.
> ...and the pain of reading you own answer...
> I forgot to add the actual advice. If you would like to avoid breaking as
> much as possible but block the obvious dangerous stuff then you should
> block for ICMP redirect (type 5). That can be used for re-routing and
> should then actively be avoided.
> The rest is fairly benign. Personally I rarely block for ICMP echo. Ping
> is a very nice diagnostic tool. Some will argue that it can be used to
> find a attack vector (that is: confirm something is there). But mostly you
> are actively provding services from your host so that vector is easily
> found anyway. But as long as you understand the implications it is OK to
> block (or not).
> Kind Regards,
> Claus Andersen
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> Official FreeSWITCH Sites
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> FreeSWITCH-users at lists.freeswitch.org
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