<div dir="ltr">My server is under IP spoof attack along with brute force. I am looking for a solution to get rid of this. The attacker is using my softphone to trace the IP. Its windows 2003 server, Can ISA server help?<br>
<br><div class="gmail_quote">On Sat, Feb 6, 2010 at 12:53 AM, Kevin P. Fleming <span dir="ltr"><<a href="mailto:kpfleming@digium.com">kpfleming@digium.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="im">Cyriaz@Gmail.com wrote:<br>
> Does it require to write firewall rules? how can I write a firewall rule<br>
> to block IP Spoofing<br>
<br>
</div>It is not possible to block IP spoofing, except for IPs that exist on<br>
the inside of your firewall. If the source IP is outside your firewall,<br>
it is not possible to know whether it originated from the proper owner<br>
of that IP or whether it was spoofed.<br>
<br>
--<br>
Kevin P. Fleming<br>
Digium, Inc. | Director of Software Technologies<br>
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA<br>
skype: kpfleming | jabber: <a href="mailto:kpfleming@digium.com">kpfleming@digium.com</a><br>
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