I was having a conversation with, you could say, one of my friends and
it somehow turned into a bit of a bet you can't hack me challenge.
Anyways, in the course of this he managed to freeze my OpenBSD 3.0
firewall/nat box with some sort of attack. When I checked my system logs
after a reboot, I
Probably nothing much can be done. A firewall is not
designed to mitigate a DoS attack. Although it can
detect a DoS attack, it doesn't have enough juice to
handle it without performance degradation, which is
why you are not able to go out too.
There are dedicated DoS mitigation devices out
Hi everybody,
We are now at this moment under a DOS attack in one of our firewalls. The
firewall's behaviour is to prevent the intrusion, and cuts the
communication.
They are not able to enter, but we are not able to go out.
The question is, Can we modify this behaviour in the firewall?
What
-up connection ad spread the
infection to other internal hosts.
Regards,
Salil.
- Original Message -
From: Alan Spicer [EMAIL PROTECTED]
To: Tom Le [EMAIL PROTECTED]; [EMAIL PROTECTED];
[EMAIL PROTECTED]
Sent: Saturday, October 20, 2001 12:19 AM
Subject: RE: recover from possible DOS attack
(then count to 10 or 20)
Cisco(Config-if)# no shutdown
Cisco(Config-if)# ^Z(control-z)
(then try the show int s0 again...)
P.S. If you suspect a DoS attack, you need to find out what
kind of DoS attack it is/was. One old typical one was the
Smurf ... which can be prevented by not allowing directed
Nemesis is THE tool for packet crafting. I am pretty sure it will fit your
needs as well.
--The Crocodile
- Original Message -
From: mailing list [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, October 02, 2001 1:44 PM
Subject: RE: Syn Flood generator / Dos Attack generator
I
for those rare pen tests where you just can't get enough information
from a host using, I hate to say this, nmap.
-Original Message-
From: mailing list [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, October 02, 2001 9:44 PM
To: [EMAIL PROTECTED]
Subject: RE: Syn Flood generator / Dos Attack generator
/ Dos Attack generator
Folks
Does any know any tool which can generate Syn Floods / DoS attacks.
This is for lab testing purposes.
-Kumar
Thus spake Pradeep Kumar, on Sun, Sep 30, 2001 at 12:37:56PM -0700:
Folks
Does any know any tool which can generate Syn Floods / DoS attacks.
This is for lab testing purposes.
You should check the libnet homepage:
http://www.packetfactory.net/libnet/
It has some usefull tools and libnet
alternatives to nmap, but their capabilities are stronger
for DoS tools.
Brownfox
-Original Message-
From: Shackleford, Dave M. [mailto:[EMAIL PROTECTED]]
Sent: Monday, October 01, 2001 2:54 PM
To: 'Pradeep Kumar'; [EMAIL PROTECTED]
Subject: RE: Syn Flood generator / Dos Attack generator
nmap is a portscanning tool, not a syn flood/dos program.
-Original Message-
From: Shackleford, Dave M. [mailto:[EMAIL PROTECTED]]
Sent: Monday, October 01, 2001 02:54 PM
To: 'Pradeep Kumar'; [EMAIL PROTECTED]
Subject: RE: Syn Flood generator / Dos Attack generator
NMAP
NMAP.
-Original Message-
From: Pradeep Kumar [mailto:[EMAIL PROTECTED]]
Sent: Sunday, September 30, 2001 3:38 PM
To: [EMAIL PROTECTED]
Subject: Syn Flood generator / Dos Attack generator
Folks
Does any know any tool which can generate Syn Floods / DoS attacks.
This is for lab testing
I'm not going to tell you because I do not know the exact rules of this
message system, but i am going to tell you do search on google, you'll
be amazed at all the leet stuff that pop's up :)
Pradeep Kumar wrote:
Folks
Does any know any tool which can generate Syn Floods / DoS attacks.
Folks
Does any know any tool which can generate Syn Floods / DoS attacks.
This is for lab testing purposes.
-Kumar
Try MRTG as well
Multi Router Traffic Grapher...
-Original Message-
From: Ashish Gupta [mailto:[EMAIL PROTECTED]]
Sent: Monday, September 24, 2001 12:46 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: Re: DoS attack ...
[EMAIL PROTECTED] wrote:
Hi All:
I recently got
.ca imran To: [EMAIL PROTECTED]
cc:
21/09/2001 Subject: DoS attack
On Fri, 21 Sep 2001, [EMAIL PROTECTED] spewed into the ether:
I recently got nailed by a DoS attack. Can anyone recommend a bandwidth
monitoring tool that will show realtime usage (or even accumulated usage
summarized by node) across the entire network without using SNMP? I have
If you can do
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