How to limit bandwidth per IP address or per user?

[Alfa1]

In order to limit abuse, site downloaders, and other instances that increase site bandwidth significantly, it would be useful to limit bandwidth per user or per IP address. Is this possible?

[vbenhancer]

i know some efficient tools that are used with CPanel, but in php, no idea...

the best idea would be to create a filter that block certain IPs *(in a whitelist) from downloading attachments... when needed. ;)

[maidos]

you can use
mod_bandwidth
mod_ipconnlimit
both are apache mods which is very good for limiting the bandwidth

[snakes1100]

mod_cband
useful to limit all connections period to how much bw they will get to use, limit each ip to 128k dl speed etc etc