Re: Network utility tools

[Stephane Bortzmeyer <bortzmeyer at gitoyen.net>]

On Tuesday 29 April 2003, at 12 h 53, 
Paul Ademola Ajayi <ademolaajayi72 at yahoo.com> wrote:

> hello everyone pls I want to ask of you people what network utility tools can
> one use to detect any spam message on a network and how to control it by 
> stoping such act.?

I use SpamAssassin <URL:http://www.spamassassin.org/> and am happy with it.

> And what network utility tools can I use to know the IP address on
> my client system - let say their server with a global IP address i.e the 
> IP address I gave them. let assume I forget the IP address and I want to
>  get the actual IP address on their server system from my end.? 

It is not very clear. You are an Internet provider, you lend IP addresses to 
customers and you forget them? If so, the best solution is to ask to the 
customer (and to hope they will not switch to a less forgetful provider). But 
the IP addresses of your customers are probably available in many places. DNS 
zone files are a good example. Describe your setup and the kind of services 
you provide and I will have other ideas.

> beside, how do I detect people that are u sing my service without my knowledge 
> may be just becos they have my network parameters one or the other i.e sniffers 
> on my network? 

This question should be detailed. What sort of services do you provide? For instance, if you provide dial-up access, knowing your "network parameters" (phone number, typically, the rest being sent by PPP/IPCP) is not sufficient: people will need the login and password.

Regarding sniffers, well, they are a fact of life. You can take precautions to avoid them (locking the rooms) or to make them almost useless (SSH).






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