hi folks, please direct me to some documentation on ways to account for user traffic on a single machine, acting as BIND9, apache, postfix, and sshd server for a number of users. i need to get as close as possible to exact traffic volume measurements to do proper billing, and (unfortunately), i can't use an upstream router for that.
i want to account for total traffic, which includes the following
challenges:
- Shell: every user has ssh access. i need to be able to keep track
of every byte coming in and out of sshd, but also any data sent to
or received from the internet while using the shell account.
- HTTP: a user has zero or more domains hosted on the system, all
request and response volume should be added to that users accounting
data.
- Mail: any mail that the user receives should be byte-counted. the
same applies to mail sent from the user account via sendmail, mail
sent via port 25, and mail relayed (TLS client authentication).
- BIND: c.f. with HTTP, basically the same applies.
if you ask me, this sounds like a horrible task. any tips from the ISP
experts?
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