From: Bert Kellerman (bertke@xxxxxxxxxxx)
Date: Mon Aug 28 2000 - 01:55:41 GMT-3
Not very neat at all. You are pinging a broadcast address and getting
replies which means your network is vulnerable to be a smurf amplifier.
Unless you have a good reason, the very first config line you should put
on an interface with an IP network hanging off it is 'no ip
directed-broadcast". A lot of money and bandwidth is wasted because of
improper configuration on routers on the internet. For more details see
http://www.netscan.org. This does come in handy sometimes but should
only be taken off briefly, if at all on an Internet-connected router.
Bert
Ben Rife wrote:
>
> To All,
>
> >From a router, you can ping the network address and receive a reply from the
> local hosts. Example:
>
> I have a router with an ethernet interface addr of 192.168.1.1 /24.
> I ping the network address of 192.168.1.0 and received the following reply:
>
> Reply to request 2 from 192.168.1.251, 1 ms
> Reply to request 2 from 128.128.2.250, 1 ms
> Reply to request 2 from 192.168.1.5, 1 ms
> Reply to request 2 from 192.168.1.3, 1 ms
>
> I believe it lists the hosts in the order which they reply. Just a thought!
> Kinda a neat trick!
>
> HTH,
>
> Ben Rife
> CCIE #5886
>
> ----- Original Message -----
> From: Fred Ingham <fningham@worldnet.att.net>
> To: <Richard_Woo@infonet.com>; <ccielab@groupstudy.com>
> Sent: Saturday, August 26, 2000 11:25 PM
> Subject: Re: Ping test
>
> > You didn't mention what equipment you were using. Network Management
> > Systems will ping all roouters at selected intervals to verify
> > connectivity. If you want to do this from a PC running windows and
> > Hyperterminal it can be done by setting the line delay under ASCII
> > Setup to 1 or 2 seconds. Then paste in your list of addresses.
> >
> > You may have to experiment a little with the timing but it works.
> >
> > Richard_Woo@infonet.com wrote:
> > >
> > > All,
> > >
> > > Is there anyway I can do an automatic ping test for many addresses?
> > > I need to ping about 200 addresses. I tried copy and paste, but the
> router
> > > would only accept the first line. :(
> > >
> > > Also, what would be a good network diagram program? Currently, I am
> using
> > > Visio for all my diagrams, but thinking about replacing it with little
> more
> > > sophisticate program.
> > > Something like AutoCAD with Network plug-ins.
> > >
> > > TIA
> > >
> > > RW
> > >
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