RE: Spoof Attack
- From: "Rami SIK" <rami@xxxxxxxxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Fri, 6 Jun 2003 09:50:10 +0300
This is the following message I got:
ISA Server detected a spoof attack from Internet Protocol (IP) address
10.246.236.1. A spoof attack occurs when an IP address that is not reachable
via the interface on which the packet was received. If logging for dropped
packets is set, you can view details in the packet filter log.
My LAT table contains 10.0.0.0 - 10.255.255.255
My configuration is;
| 10.x.x.x | | 192.168.2.x |
LAN |---------------------| ISA |---------------------------| Firewall
| | | |
--------------------------------------------------------------------
Rami SIK
System & Network Administrator
CCNA
Kimyatas
Istanbul / Turkey
Tel:90-212-334 4963
--------------------------------------------------------------------
-----Original Message-----
From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxxxxxxxxx]
Sent: Thursday, June 05, 2003 2:37 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Spoof Attack
http://www.ISAserver.org
Hey guys,
Are you being spoofed? Or are your LAT entries incorrect or are you putting
two interfaces on the same segment? Its strange to see a spoof from a public
address since it should be reachable from the external interface.
Thanks!
Tom
Thomas W Shinder
<http://www.isaserver.org/shinder> www.isaserver.org/shinder
ISA Server and Beyond: http://tinyurl.com/1jq1
Configuring ISA Server: <http://tinyurl.com/1llp> http://tinyurl.com/1llp
-----Original Message-----
From: Rami SIK [mailto:rami@xxxxxxxxxxxxxxx]
Sent: Thursday, June 05, 2003 3:46 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: Spoof Attack
http://www.ISAserver.org
I am also getting such messages recently. This morning, there were more than
500 email alerts complaining spoof attack.
Any idea?
--------------------------------------------------------------------
Rami SIK
System & Network Administrator
CCNA
Kimyatas
Istanbul / Turkey
Tel:90-212-334 4963
--------------------------------------------------------------------
-----Original Message-----
From: Lim, Arthus T. [mailto:alim@xxxxxxxxx]
Sent: Thursday, June 05, 2003 11:34 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] Spoof Attack
http://www.ISAserver.org
ISA Server detected a spoof attack from Internet Protocol (IP) address
203.167.103.38. A spoof attack occurs when an IP address that is not
reachable via the interface on which the packet was received. If logging for
dropped packets is set, you can view details in the packet filter log.
I received a lot of this alert messages lately. How can I avoid spoof
attack?
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