dear guillaume, hi. i am currently working on the same kind of problem. i have three ISP links for connecting to the internet. 2 of these links have dynamic address and remaining one has static address. Now i wanted all of my LAN traffic to these 3 links simultaneously. i.e. in load balancing mode while keeping all links buzzing with traffic. i found a site whih was very useful for me. this is www.linux.com.lb. in the howto section there is a load balancing howto. moreover there is a patch available with netfilter at official site www.netfilter.org. this patch is named as random patch and i am using it to distribute the traffic as 33/33/33 percentagle of the total traffic on various ISP links. try it and i hope your problem will be resolved. Alok Nath Upadhyay Suntech (OSM) Team PC Solutions (P) Limited 12, Sant Nagar, East of Kailash New Delhi - 110 065. Tel.: +91-11-2621 3355 / 2621 7766 / 2688 4433 (Ext.: 51) Fax : +91-11-647 6822 --- guillaume <guillaume.riviere@xxxxxxxxxxxxxx> wrote: Dear All netfilter users and developpers, This software is an amazing software, We are are very happy of this solution for our office. Now, I need some help to improve our network: Our office is based in Vietnam, and in this country (for the moment) all internet connections are unstable. We currently use an ISP with a (slow) connection, but providing real static IP address (6). We want to add a second ISP to our office with non static IP Address. They provide us also a modem/router for NAT. We already install a GNU/Debian Router with netfiler support (2.6 kernel) in order to manage our first ISP link. We would like to add a network card in this router and "loadbalance" our internet connection between those two ISPs. The problem is that some of our internal IP need to be link to a real external IP on the first provider only (For VPN connections). Is it possible with netfilter to link some internal IP to a "load balancing" between 2 ISPs and some other on just one of those ISP ? Is there a possibility to detect a "down" line and to use automatically the second line for all our internals IP ? How can I manage the differents bandwith with "load balancing" ( I mean, my first ISP average is something around 64 kbps and my second is 512 kpbs: How can I said to net filter 20% on this line and 80% on this line) Is there How to or Dosumentation for this on 2.6 kernel ? Thank you in advance for your help, Guillaume
