[26422] in North American Network Operators' Group
Re: GTEI Filtering ICMP Echo/Echo Replies?
daemon@ATHENA.MIT.EDU (Charles Sprickman)
Fri Dec 31 13:19:27 1999
Date: Fri, 31 Dec 1999 13:17:26 -0500 (EST)
From: Charles Sprickman <spork@inch.com>
To: "Martin, Christian" <CMartin@mercury.balink.com>
Cc: "'nanog@merit.edu'" <nanog@merit.edu>
In-Reply-To: <4F8C08CC6E76D311AD1F00508B78724907E989@HERMES>
Message-ID: <Pine.BSF.4.21.9912311315550.22190-100000@shell.inch.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Errors-To: owner-nanog-outgoing@merit.edu
From ICON:
root@bigred[/var/www/apache/myadmin]# ping www.bbn.com
PING www.bbn.com (128.11.41.197): 56 data bytes
^C
--- www.bbn.com ping statistics ---
4 packets transmitted, 0 packets received, 100% packet loss
From Genuity:
motel-6 [/home/spork]# ping www.bbn.com
PING www.bbn.com (128.11.41.197): 56 data bytes
64 bytes from 128.11.41.197: icmp_seq=0 ttl=244 time=44.895 ms
64 bytes from 128.11.41.197: icmp_seq=1 ttl=244 time=52.813 ms
64 bytes from 128.11.41.197: icmp_seq=2 ttl=244 time=39.077 ms
As a bbn customer, I can say that we have not been informed of any such
policy, and they are not filtering for us.
Charles
On Fri, 31 Dec 1999, Martin, Christian wrote:
>
> Happy Y2K to all! Looks as if GTEI has begun filtering ICMP type 0 and 8 (I
> hope that's all) through their backbone. I heard that this was because of
> DoS threats, but I haven't seen any other commentary on the subject. GTEIs
> NOC claims that they have made no changes. From some places I can get
> through the network, but others fail. CERFNet and others are clean.
> Traceroute works fine everywhere. Has anyone else seen anything similar?
>
> Regards,
> Christian
>
