Hi there,
New here, great site.
A computer guy installed our Internet gateway on a Linux box (Slackware 12.2). We don't have access to him anymore. We would like to log how much traffic is going through the gateway. How would we do this? He never installed a GUI, so it is command line only. any help is appreciated or even point me to a how-to somewhere.
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Is your gateway a proxy server too? if it is a proxy server then you can access the Squid logs and see what web traffic is going through it in /var/log/squid (slackware may put it elsewhere but thats accurate for me). If it's not a proxy, then you can still see the traffic in terms of bytes going through the interface card by running ifconfig. It will show you RX (bytes received) and TX (bytes transmitted) for each interface. If you want to see more details about what sort of traffic is going through the device and how it is prorportioned etc, then consider installing something like ntop on the box. The interface for ntop can be accessed via a web page from any machine on the network. Make sure you password protect it!