bandwidth monitoring

bandwidth monitoring

[patrick.leduc]

Hello

Does somebody know a program for monitoring bandwidth by ip? I have one 
internet interface and I must monitor many ips adresses on this interface. I 
tried Ipac-ng and, I worked a lot to do this config but it seems not working 
this way.

thanx

Re: bandwidth monitoring

[J. Nerius]

Hello,

I have had good luck with a program called bandwidthd, available at
http://bandwidthd.sourceforge.net/

I know it's not netfilter related specifically but I found it met my
needs where others failed. 

J.N.

On Thu, 2005-01-06 at 11:28 -0500, patrick.leduc@novipro.com wrote:
> Hello
> 
> Does somebody know a program for monitoring bandwidth by ip? I have one 
> internet interface and I must monitor many ips adresses on this interface. I 
> tried Ipac-ng and, I worked a lot to do this config but it seems not working 
> this way.
> 
> thanx
> 

Re: bandwidth monitoring

[Les Mikesell]

On Thu, 2005-01-06 at 10:28, patrick.leduc@novipro.com wrote:

> Does somebody know a program for monitoring bandwidth by ip? I have one 
> internet interface and I must monitor many ips adresses on this interface. I 
> tried Ipac-ng and, I worked a lot to do this config but it seems not working 
> this way.

Ntop might do what you need.  http://www.ntop.org.  It can summarize and
sort traffic by address/port/protocol, etc.  I don't use it continuously
but fire it up for a while if I think something is hogging the network.

-- 
  Les Mikesell
   les@futuresource.com

Re: bandwidth monitoring

[J. Nerius]

ntop is great for *short term* monitoring. Generally it will become
unmanageable if run for too long. If you want to monitor and keep stats
over a longer period of time, bandwidthd will probably work better for
you.

J.N.

On Thu, 2005-01-06 at 11:42 -0600, Les Mikesell wrote:
> On Thu, 2005-01-06 at 10:28, patrick.leduc@novipro.com wrote:
> 
> > Does somebody know a program for monitoring bandwidth by ip? I have one 
> > internet interface and I must monitor many ips adresses on this interface. I 
> > tried Ipac-ng and, I worked a lot to do this config but it seems not working 
> > this way.
> 
> Ntop might do what you need.  http://www.ntop.org.  It can summarize and
> sort traffic by address/port/protocol, etc.  I don't use it continuously
> but fire it up for a while if I think something is hogging the network.
> 

Re: bandwidth monitoring

[Michael Gale]

Hello,

	To run NTOP permanitly you just have to clear the stats nightly. I have 
a php script that makes a HTTP connection, downloads the stats from NTOP 
and saves them in a mysql database. It then makes another connection and 
tells NTOP to reset the stats.

That keeps the memory and CPU usage low ... so you could run it 
continuously.

Michael.


patrick.leduc@novipro.com wrote:
> Hello
> 
> Does somebody know a program for monitoring bandwidth by ip? I have one 
> internet interface and I must monitor many ips adresses on this interface. I 
> tried Ipac-ng and, I worked a lot to do this config but it seems not working 
> this way.
> 
> thanx
> 

-- 
Michael Gale
Lan Administrator
Utilitran Corp.

I make better friends with those who think for them selves

Re: bandwidth monitoring

[J. Nerius]

How many hosts and how much traffic are you running through it? I've
wanted to come up with a solution similar to the one you've described to
replace my current bandwidthd setup but I'm thinking that my network may
be too large with too much traffic to support something like that
without building a monster box just to capture the stats. 

J.N.

On Thu, 2005-01-06 at 13:09 -0700, Michael Gale wrote:
> Hello,
> 
> 	To run NTOP permanitly you just have to clear the stats nightly. I have 
> a php script that makes a HTTP connection, downloads the stats from NTOP 
> and saves them in a mysql database. It then makes another connection and 
> tells NTOP to reset the stats.
> 
> That keeps the memory and CPU usage low ... so you could run it 
> continuously.
> 
> Michael.
> 
> 
> patrick.leduc@novipro.com wrote:
> > Hello
> > 
> > Does somebody know a program for monitoring bandwidth by ip? I have one 
> > internet interface and I must monitor many ips adresses on this interface. I 
> > tried Ipac-ng and, I worked a lot to do this config but it seems not working 
> > this way.
> > 
> > thanx
> > 
> 

Re: bandwidth monitoring

[Michael Gale]

No problem ...

	I just checked and actually I am using two scripts.

The first script:
--snip-- runntop -- executed by cron.
#!/bin/bash

/usr/bin/curl -k -s -s --digest -u ntopUP:ntopUP 
https://mis.utilitran.com/uploadscripts/ntopget.php > /dev/null

if [ "$?" == "0" ]; then
echo "File loaded" >> /dev/null
else
~/email "Error with NTOP update" netops@utilitran.com < /dev/null
fi

sleep 5

/usr/bin/curl --basic -u admin:ntopadmin 
http://ntop.utilitran.com:3000/ntop/resetStats.html

if [ "$?" == "0" ]; then
echo "File loaded" >> /dev/null
else
~/email "Error with NTOP reset" netops@utilitran.com < /dev/null
fi
--snip--

The first script makes a http request to a php web page that display no 
data. Then once that is successful it makes a http connections to ntop 
and resets the stats.

The second script ... that the first script calls, uses curl to make a 
http connection to the ntop server, download the stats and store them in 
a database. The scripts are kind of messy ... really my first attempt. 
You may notice that data_total is not being used .. that is because I am 
working on storing the total amounts somewhere .. but that is not done.


The second script:
--snip-- ntopget.php -- executed by http request
<?php
//
// The PHP curl module supports the received page to be returned in a 
variable
// if told.
//

$dat=date('m:d:y-U');
$startphp="<?php\n";
$endphp="?>";

echo 'Preparing to download file<BR>';
$fp = fopen('/home/mis/htdocs/datafiles/ntop/data/' . $dat, 'w');
fwrite($fp,$startphp,strlen($startphp));
fclose($fp);

$fp = fopen('/home/mis/htdocs/datafiles/ntop/data/' . $dat, 'a');
$ch = 
curl_init("http://ntop.utilitran.com:3000/ntop/dumpData.html?language=php&view=long");

curl_setopt($ch, CURLOPT_FILE, $fp);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_exec($ch);
curl_close($ch);

fclose($fp);

$fp = fopen('/home/mis/htdocs/datafiles/ntop/data/' . $dat, 'a');
fwrite($fp,$endphp,strlen($endphp));
fclose($fp);

echo 'Done downloading file<BR>';

include '/home/mis/htdocs/datafiles/ntop/data/' . $dat;

// Start of using array

               $db = mysql_connect("127.0.0.1", "ntop", "ntop") or 
die("Error ... check with network team");
               mysql_select_db("ntop",$db);

foreach ($ntopHash as $key => $value) {

         $addme = strpos($key,"192.168.7");
         $data = array();

         if ( $addme !== FALSE )
         {

array_push($data,$key);
array_push($data,$ntopHash[$key]['hostResolvedName']);
array_push($data,$dat);
array_push($data,$ntopHash[$key]['ethAddressString']);
array_push($data,$ntopHash[$key]['firstSeen']);
array_push($data,$ntopHash[$key]['lastSeen']);
array_push($data,$ntopHash[$key]['averageRcvdThpt']);
array_push($data,$ntopHash[$key]['averageSentThpt']);
array_push($data,$ntopHash[$key]['averageTThpt']);
array_push($data,$ntopHash[$key]['icmpSent']);
array_push($data,$ntopHash[$key]['icmpRcvd']);
array_push($data,$ntopHash[$key]['IP']['FTP']['sendLoc']);
array_push($data,$ntopHash[$key]['IP']['FTP']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['FTP']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['FTP']['rcvdFromRem']);
array_push($data,$ntopHash[$key]['IP']['HTTP']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['HTTP']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['HTTP']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['HTTP']['rcvdFromRem']);
array_push($data,$ntopHash[$key]['IP']['DIFFHTTP']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['DIFFHTTP']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['DIFFHTTP']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['DIFFHTTP']['rcvdFromRem']);

array_push($data,$ntopHash[$key]['IP']['RDP']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['RDP']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['RDP']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['RDP']['rcvdFromRem']);
array_push($data,$ntopHash[$key]['IP']['DNS']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['DNS']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['DNS']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['DNS']['rcvdFromRem']);
array_push($data,$ntopHash[$key]['IP']['Mail']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['Mail']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['Mail']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['Mail']['rcvdFromRem']);
array_push($data,$ntopHash[$key]['IP']['DHCP-BOOTP']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['DHCP-BOOTP']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['DHCP-BOOTP']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['DHCP-BOOTP']['rcvdFromRem']);
array_push($data,$ntopHash[$key]['IP']['SNMP']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['SNMP']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['SNMP']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['SNMP']['rcvdFromRem']);
array_push($data,$ntopHash[$key]['IP']['NNTP']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['NNTP']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['NNTP']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['NNTP']['rcvdFromRem']);
array_push($data,$ntopHash[$key]['IP']['SSH']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['SSH']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['SSH']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['SSH']['rcvdFromRem']);
array_push($data,$ntopHash[$key]['IP']['Messenger']['sentLoc']);
array_push($data,$ntopHash[$key]['IP']['Messenger']['rcvdLoc']);
array_push($data,$ntopHash[$key]['IP']['Messenger']['sentRem']);
array_push($data,$ntopHash[$key]['IP']['Messenger']['rcvdFromRem']);


         foreach ( $data as $key => $value ) {

         $data_table = $data_table . '\'' . $value . '\',';

         }

         for ($i=0;$i<6;$i++) {

         $data_total = $data_total . '\'' . $data_table[$i] . '\',';

         }


         $data_table = substr($data_table,0,(strlen($data_table)-1));
         $data_total = substr($data_total,0,(strlen($data_total)-1));

                 // Here we upload the data into the daily table

                 $sql = "INSERT INTO ntop_daily VALUES ($data_table)";

                 $result = mysql_query($sql) or die("Error ..... check 
with network team " . mysql_error());

                 if ( $result === FALSE )
                 {
                 exec('/home/mis/email "NTOP Nightly Update FAILED" "The 
NTOP nightly update failed" \&/> /dev/null');
                 }

         }
unset($data_table);
unset($data_total);
unset($data);
unset($result);

}

               mysql_close($db);

?>
--snip--




Marek Dohojda wrote:
> Can I see that script?
> 
> 
> 
> 
> 
> ---
> 01001101011000010111001001100101011010110010000001000100010011110110100001101111011010100110010001100001 
> 
> 
> Michael Gale wrote:
> 
>> Hello,
>>
>>     To run NTOP permanitly you just have to clear the stats nightly. I 
>> have a php script that makes a HTTP connection, downloads the stats 
>> from NTOP and saves them in a mysql database. It then makes another 
>> connection and tells NTOP to reset the stats.
>>
>> That keeps the memory and CPU usage low ... so you could run it 
>> continuously.
>>
>> Michael.
>>
>>
>> patrick.leduc@novipro.com wrote:
>>
>>> Hello
>>>
>>> Does somebody know a program for monitoring bandwidth by ip? I have 
>>> one internet interface and I must monitor many ips adresses on this 
>>> interface. I tried Ipac-ng and, I worked a lot to do this config but 
>>> it seems not working this way.
>>>
>>> thanx
>>>
>>

-- 
Michael Gale
Lan Administrator
Utilitran Corp.

I make better friends with those who think for them selves

Re: bandwidth monitoring

[Michael Gale]

Hello,

	I am not sure I follow ... NTOP takes care of providing the stats, so 
if you firewall box or ntop server can handle your network.

The storage box can be what and where ever ... for example you could 
have a low end box somewhere on the network that makes the http 
connection, downloads the stats and stores them in a database.

Then you only need a simple method to display them when needed. If you 
are a large company it might be easier to setup multiple ntop servers 
and have all the stats stored in a central location.

Michael.



J. Nerius wrote:
> How many hosts and how much traffic are you running through it? I've
> wanted to come up with a solution similar to the one you've described to
> replace my current bandwidthd setup but I'm thinking that my network may
> be too large with too much traffic to support something like that
> without building a monster box just to capture the stats. 
> 
> J.N.
> 
> On Thu, 2005-01-06 at 13:09 -0700, Michael Gale wrote:
> 
>>Hello,
>>
>>	To run NTOP permanitly you just have to clear the stats nightly. I have 
>>a php script that makes a HTTP connection, downloads the stats from NTOP 
>>and saves them in a mysql database. It then makes another connection and 
>>tells NTOP to reset the stats.
>>
>>That keeps the memory and CPU usage low ... so you could run it 
>>continuously.
>>
>>Michael.
>>
>>
>>patrick.leduc@novipro.com wrote:
>>
>>>Hello
>>>
>>>Does somebody know a program for monitoring bandwidth by ip? I have one 
>>>internet interface and I must monitor many ips adresses on this interface. I 
>>>tried Ipac-ng and, I worked a lot to do this config but it seems not working 
>>>this way.
>>>
>>>thanx
>>>
>>
> 

-- 
Michael Gale
Lan Administrator
Utilitran Corp.

I make better friends with those who think for them selves

Re: bandwidth monitoring

[J. Nerius]

Hello, 

My concern was for the amount of resources NTOP would end up using with
the currently volume of traffic we have going through any one link. 

Basically, there will be at least 3000 hosts totaling around 25 megabits
of traffic at any given time. In my experience with ntop for short-term
monitoring, I found that in these circumstances, the process size and
cpu utilization were quite high.

I've been using bandwidthd to collect data and then just rsyncing that
data to a different server that actually graphs the data. I'd like to
use ntop for it's detailed tracking capabilities, but given the resource
utilization issues I've seen in the past, am not sure how feasible this
would be. 

How many hosts and how much traffic is currently going through your
setup? It's very possible that I may just need to tweak settings
somewhere to improve performance. 

J.N.


On Thu, 2005-01-06 at 14:28 -0700, Michael Gale wrote:
> Hello,
> 
> 	I am not sure I follow ... NTOP takes care of providing the stats, so 
> if you firewall box or ntop server can handle your network.
> 
> The storage box can be what and where ever ... for example you could 
> have a low end box somewhere on the network that makes the http 
> connection, downloads the stats and stores them in a database.
> 
> Then you only need a simple method to display them when needed. If you 
> are a large company it might be easier to setup multiple ntop servers 
> and have all the stats stored in a central location.
> 
> Michael.
> 
> 
> 
> J. Nerius wrote:
> > How many hosts and how much traffic are you running through it? I've
> > wanted to come up with a solution similar to the one you've described to
> > replace my current bandwidthd setup but I'm thinking that my network may
> > be too large with too much traffic to support something like that
> > without building a monster box just to capture the stats. 
> > 
> > J.N.
> > 
> > On Thu, 2005-01-06 at 13:09 -0700, Michael Gale wrote:

Re: bandwidth monitoring

[Michael Gale]

Ahhh .. I see now. Our setup is rather small and we only have about 10 
megabits max at any given time -- usually much less.

Here is the command I use to start ntop:
ntop -4 -a /home/ntopwatch/webaccess --daemon -i eth1,eth2 -o -n -p 
userprolist -s -u ntopwatch -w 192.168.7.1:3000 -M -P /home/ntopwatch/

My userprolist:
FTP=ftp|ftp-data
HTTP=http|www|https|3128
DIFFHTTP=8080|8888
RDP=3389
DNS=name|domain
NBios-IP=netbios-ns|netbios-dgm|netbios-ssn
Mail=pop-2|pop-3|pop3|kpop|smtp|imap|imap2
DHCP-BOOTP=67-68
SNMP=snmp|snmp-trap
NNTP=nntp
SSH=22
Gnutella=6346|6347|6348
Kazaa=1214
WinMX=6699|7730
DirectConnect=0
eDonkey=4661-4665
Messenger=1863|5000|5001|5190-5193

But the box which is running ntop is:
Dual PIII 1.4Ghz with 1GB of RAM.

Michael.

J. Nerius wrote:
> Hello, 
> 
> My concern was for the amount of resources NTOP would end up using with
> the currently volume of traffic we have going through any one link. 
> 
> Basically, there will be at least 3000 hosts totaling around 25 megabits
> of traffic at any given time. In my experience with ntop for short-term
> monitoring, I found that in these circumstances, the process size and
> cpu utilization were quite high.
> 
> I've been using bandwidthd to collect data and then just rsyncing that
> data to a different server that actually graphs the data. I'd like to
> use ntop for it's detailed tracking capabilities, but given the resource
> utilization issues I've seen in the past, am not sure how feasible this
> would be. 
> 
> How many hosts and how much traffic is currently going through your
> setup? It's very possible that I may just need to tweak settings
> somewhere to improve performance. 
> 
> J.N.
> 
> 
> On Thu, 2005-01-06 at 14:28 -0700, Michael Gale wrote:
> 
>>Hello,
>>
>>	I am not sure I follow ... NTOP takes care of providing the stats, so 
>>if you firewall box or ntop server can handle your network.
>>
>>The storage box can be what and where ever ... for example you could 
>>have a low end box somewhere on the network that makes the http 
>>connection, downloads the stats and stores them in a database.
>>
>>Then you only need a simple method to display them when needed. If you 
>>are a large company it might be easier to setup multiple ntop servers 
>>and have all the stats stored in a central location.
>>
>>Michael.
>>
>>
>>
>>J. Nerius wrote:
>>
>>>How many hosts and how much traffic are you running through it? I've
>>>wanted to come up with a solution similar to the one you've described to
>>>replace my current bandwidthd setup but I'm thinking that my network may
>>>be too large with too much traffic to support something like that
>>>without building a monster box just to capture the stats. 
>>>
>>>J.N.
>>>
>>>On Thu, 2005-01-06 at 13:09 -0700, Michael Gale wrote:
> 
> 
> 

-- 
Michael Gale
Lan Administrator
Utilitran Corp.

I make better friends with those who think for them selves

RE: bandwidth monitoring

[Mark E. Donaldson]

 
http://bandwidthd.sourceforge.net/


-----Original Message-----
From: netfilter-bounces@lists.netfilter.org
[mailto:netfilter-bounces@lists.netfilter.org] On Behalf Of
patrick.leduc@novipro.com
Sent: Thursday, January 06, 2005 8:28 AM
To: netfilter@lists.netfilter.org
Subject: bandwidth monitoring

Hello

Does somebody know a program for monitoring bandwidth by ip? I have one
internet interface and I must monitor many ips adresses on this interface. I
tried Ipac-ng and, I worked a lot to do this config but it seems not working
this way.

thanx


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RE: bandwidth monitoring

[Fabiano Reis]

I´m acctualy using hotsanic to make this. 

http://hotsanic.sourceforge.net/

it have features to monitore other things as well...



-----Original Message-----
From: netfilter-bounces@lists.netfilter.org
[mailto:netfilter-bounces@lists.netfilter.org] On Behalf Of
patrick.leduc@novipro.com
Sent: Thursday, January 06, 2005 2:28 PM
To: netfilter@lists.netfilter.org
Subject: bandwidth monitoring

Hello

Does somebody know a program for monitoring bandwidth by ip? I have one 
internet interface and I must monitor many ips adresses on this interface. I

tried Ipac-ng and, I worked a lot to do this config but it seems not working

this way.

thanx

Re: bandwidth monitoring

[Ranjeet Shetye]

* patrick.leduc@novipro.com (patrick.leduc@novipro.com) wrote:
> Hello
> 
> Does somebody know a program for monitoring bandwidth by ip? I have one 
> internet interface and I must monitor many ips adresses on this interface. I 
> tried Ipac-ng and, I worked a lot to do this config but it seems not working 
> this way.
> 
> thanx
> 

Long term bandwidth usage can be tracked using MRTG. (stored data +
daemon + http server + web based gui)

Instantaneous bandwidth usage can be tracked using iftop. (ncurses)

-- 
Ranjeet Shetye
Senior Software Engineer
Zultys Technologies
Ranjeet dot Shetye at Zultys dot com
http://www.zultys.com/
 
The views, opinions, and judgements expressed in this message are solely those of
the author. The message contents have not been reviewed or approved by Zultys.

Re: bandwidth monitoring

[Jose Maria Lopez]

El mié, 26 de 01 de 2005 a las 19:33, Ranjeet Shetye escribió:
> * patrick.leduc@novipro.com (patrick.leduc@novipro.com) wrote:
> > Hello
> > 
> > Does somebody know a program for monitoring bandwidth by ip? I have one 
> > internet interface and I must monitor many ips adresses on this interface. I 
> > tried Ipac-ng and, I worked a lot to do this config but it seems not working 
> > this way.
> > 
> > thanx
> > 
> 
> Long term bandwidth usage can be tracked using MRTG. (stored data +
> daemon + http server + web based gui)
> 
> Instantaneous bandwidth usage can be tracked using iftop. (ncurses)

You can try our bastion-firewall-stats-addon, it's GPL and it uses
rrdtool to do the graphical stats. It's very easy to use, but you
have to use bastion-firewall to use it.

Another good option it's using something like Cacti to have an
interface to Rrdtool. It has scripts to monitor interfaces and
can do all kind of graphs.

Regards.

-- 
Jose Maria Lopez Hernandez
Director Tecnico de bgSEC
jkerouac@bgsec.com
bgSEC Seguridad y Consultoria de Sistemas Informaticos
http://www.bgsec.com
ESPAÑA

The only people for me are the mad ones -- the ones who are mad to live,
mad to talk, mad to be saved, desirous of everything at the same time,
the ones who never yawn or say a commonplace thing, but burn, burn, burn
like fabulous yellow Roman candles.
                -- Jack Kerouac, "On the Road"

monitoring

[Alireza Yazdani]

Hello all,

some question about report program:

1) I use of BandwidthD monitoring program. this program is IP based and shows all trafic throgh text&graphic mode but this program hasn't a good performance. I want a program such as it with good performance.

2) I use MRTG prgram on cache-server . this program shows all traffic but I want a program that shows all traffic that the end-user get from internet & cache separately.

Thanks

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

Re: monitoring

[Radien Radien]

Try SAWMIL but I think it is commercial


On Thu, 27 Jan 2005 21:21:07 -0800 (PST), Alireza Yazdani
<yazdani1193@yahoo.com> wrote:
> 
> Hello all,
> 
> some question about report program:
> 
> 1) I use of BandwidthD monitoring program. this program is IP based and shows all trafic throgh text&graphic mode but this program hasn't a good performance. I want a program such as it with good performance.
> 
> 2) I use MRTG prgram on cache-server . this program shows all traffic but I want a program that shows all traffic that the end-user get from internet & cache separately.
> 
> Thanks
> 
> __________________________________________________
> Do You Yahoo!?
> Tired of spam?  Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
> 


-- 
__ Radien__