Hi Bety, a problem like this was reported on IMQ mailling list a couple of weeks ago. It is still pending review but it must be somehow related to iptraf. :-|
I'm sorry for not being able to give you some "positive" advice on it for now.
Tks for reporting this issue. If you need assistance feel free to write me privately or to join our list at www.linuximq.net
Cheers
Andre
bety1@xxxxxxxxxxxxxx wrote:
Does anybody have the following problem?
Affected: IMQ interfaces with --todev target on PREROUTING chain appear only on 2.6.x kernels (2.4.x working good)
Counters on PREROUTING chain working good (with iptraf sniffing on any interface), but imq interfaces lost TCP packets which are forwarded from the internet to the network behind router (only TCP; the rest of traffic like icmp, udp is ok).
Try to make two imq interfaces on your internet interface and download file (via ftp, www or somtging else), NOT from your internet router but from computer behind NAT (behind router) and then enable iptraf. Because for router traffic everything working fine.
your computer --- router (with nat, imq and iptraf) --- imq0, and imq1 --- internet interface --- Internet
configuration: iptables -F iptables -X iptables -Z iptables -F -t nat iptables -X -t nat iptables -F -t mangle iptables -X -t mangle
iptables -P FORWARD ACCEPT iptables -P INPUT ACCEPT iptables -P OUTPUT ACCEPT
iptables -t nat -A POSTROUTING -s $i -o $INTERNET_ETH -d 0/0 -j SNAT --to $INTERNET_IP
# Download iptables -t mangle -A PREROUTING -i $INTERNET_ETH -j IMQ --todev 0
# Upload iptables -t mangle -A POSTROUTING -o $INTERNET_ETH -j IMQ --todev 1
ip link set imq0 up ip link set imq1 up
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