Vsftpd - how to limit download bandwidth but unlimited upload bandwidth?

here's my vsftpd.conf

anonymous_enable=NO
local_enable=YES
dirmessage_enable=YES
connect_from_port_20=YES
xferlog_enable=YES
xferlog_file=/var/log/vsftpd/vsftpd.log
nopriv_user=nobody
chroot_list_enable=YES
background=YES
listen=YES
text_userdb_names=YES
local_root=/home/data
write_enable=YES
pam_service_name=vsftpd
tcp_wrappers=YES
ftpd_banner=Welcome to my FTP server
local_max_rate=10000
max_clients=2
max_per_ip=1

I discovered that the local_max_rate clamped down the upload speeds. Undesirable. Any ideas?

Hmz, I don't think this is possible via the config file. (could be wrong)
Morelikely you should be looking for something to limit bandwith via iptables or something .....

But would configuring ip tables affect other services running on the same machine ie.. web server?

Normally u can set this on port level with IPTABLES, so only limit bandwith to the ftp data port. And in specific from internal to external interface.

I once did something similar to this for an internal pc in my network. (limit upload bandwith)
It had something to do with IPTABLES marking the packages, and another service holding down the bandwith for the marked packages.

I'm not sure how I accieved this but here is the "marking rule" for IPTABLES. Perhaps google knows a way out.

IPTABLES -t mangle -A FORWARD -p tcp -m multiport --destination-port 4662 -j MARK --set-mark 3