I'm not getting attacked from this alter.net IP,  but I am being
constantly scanned on consecutive ports usually ranging in the 21xx or
24xx range.  My firewall (a windows based firewall/proxy ap on an
NT4 server) blocks both of these ranges, so all I see are requests on port
21xx and each is denied.

There are 3 separate IP addresses doing this, but they are one after the
other scanning ports in consecutive order.

Anyone ever seen anything like this?

> You are not alone, I've also been attacked by someone from this
> alter.net site. Do a google search for alter.net and you should find
> more information.
>
> From my searches, alter.net is a small? ISP in BC canada...
>
>
> On Wed, 29 Nov 2000 22:17:42 -0800, you wrote:
>
> >There is an ip number that started showing up in my postfix logs
> >as trying to access my smtp server (and access was apparently
> >denied each time).  I assumed that someone was trying to use
> >my machine as a relay.  To make sure that they can't get through,
> >I blocked the ip address using ipchains.  In one day, I now
> >see over 600 failed attempts to access my computer.  Should I
> >just ignore this now that ipchains is blocking them, or is this
> >something that should worry me.
> >
> >More details:
> >ipchains message (my ip # x-ed out to protect the innocent):
> >Nov 28 23:59:07 duck kernel: Packet log: input DENY eth1 PROTO=1
> >63.98.105.3:8 208.xxx.xxx.xx1:0 L=60 S=0x00 I=6793 F=0x0000 T=114 (#1)
> >
> >nslookup for 63.98.105.3 gives nothing.
> >traceroute ends at readersdigest-gw.customer.alter.net (157.130.210.42)
>
>
>

There's plenty of semicolons to go around
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