Visit Jeremy's Blog.
Go Back > Forums > Other *NIX Forums > *BSD
User Name
*BSD This forum is for the discussion of all BSD variants.
FreeBSD, OpenBSD, NetBSD, etc.


  Search this Thread
Old 06-30-2003, 04:46 AM   #1
LQ Newbie
Registered: Jun 2003
Distribution: FreeBSD
Posts: 2

Rep: Reputation: 0
Smile IPFW Firewall pppd based

Hello to all.

My question is:
I have freebsd server with 2 network cards, i use it for nat and i would like to know how module DUMMYNET can be helpful in filtering imcp "smurf". Does omeone know how to limit icmp smurf but allow normal ping to my host?
Old 07-01-2003, 02:37 AM   #2
Registered: Apr 2002
Location: Rouen, France
Distribution: Slackware, FreeBSD
Posts: 34

Rep: Reputation: 15
Type sysctl -a | grep icmp to see all kernel variables related to ICMP. You have icmplim which limit the number of ICMP packets by second and log_redirect, drop_redirect ...
In the same way, look in the kernel configuration file (in /usr/src/sys/i386/conf), you'll find ICMP options.
In IPFW, you'll only find parameters to drop or not ICMP packets.
I think DUMMYNET is only for TCP not for ICMP.
Hope it helps
Old 07-01-2003, 02:44 AM   #3
LQ Newbie
Registered: Jun 2003
Distribution: FreeBSD
Posts: 2

Original Poster
Rep: Reputation: 0


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
sendmail on solaris with no hostname & ipfw (or other firewall) tutorials Maidros Solaris / OpenSolaris 1 07-10-2005 01:34 PM
Looking for web based administration of pppd mrtwice Linux - Software 2 05-17-2004 09:34 AM
pppd (modem) connection on firewall / gateway mrtwice Linux - Networking 1 01-09-2004 05:27 AM
IPFW gateway firewall Reme *BSD 1 10-30-2003 08:29 PM
simple ipfw default rc.firewall Reme *BSD 4 10-15-2003 09:04 PM

All times are GMT -5. The time now is 02:48 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration