[61881] in North American Network Operators' Group

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Re: Cable & Wireless, Verio and/or Level 3 port blocking?

daemon@ATHENA.MIT.EDU (Kai Schlichting)
Mon Sep 8 16:07:38 2003

Date: Mon, 8 Sep 2003 16:06:50 -0400
From: Kai Schlichting <kai@pac-rim.net>
To: nanog@merit.edu
In-Reply-To: <Pine.LNX.4.44.0309082057450.31573-100000@MrServer>
Errors-To: owner-nanog-outgoing@merit.edu


On 9/8/2003 at 3:58 PM, "Stephen J. Wilcox" <steve@telecomplete.co.uk> wrote:


> I dont have a url for such an app (assuming one has been written) but you should
> be able to run a traceroute using the tcp ports and see where it stops?

> Steve

> On Mon, 8 Sep 2003, William Devine, II wrote:

>> 
>> Can anyone from these three carriers tell me if you're doing port blocking
>> on the Windows file/print ports (135-139, 445 & 593) ?
>> A client of ours (in the US), against our recommendation, still wants to
>> connect to their Exchange server in the UK without a VPN.  We're not
>> blocking their IP#'s from anything but somewhere in between it's getting
>> blocked.  We use C&W directly and Verio/Level3 through a peer.
>> 
>> Thanks!
>> william

That'd be http://michael.toren.net/code/tcptraceroute/

bye,Kai



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