Begin forwarded message:
> From: Michio Honda <[email protected]> > Date: October 3, 2010 2:30:57 GMT+03:00 > To: Multipath TCP Mailing List <[email protected]>, "[email protected]" > <[email protected]> > Cc: Mark Handley <[email protected]> > Subject: [multipathtcp] Call for contribution to middlebox survey > > Hi, > > We are surveying middleboxes affecting TCP in the Internet, and we'd like you > to contribute to this work by running 1 python script at your available > networks, because we want data of as many paths as possible. > This script generates test TCP traffic to a server node, and detects various > middlebox behavior, for example, it detects how unknown TCP options are > treated and if sequence number is rewritten. > > - Overview of script > This generates test TCP traffic by using raw socket or pcap. > Destinations of the test traffic are port 80, 443 and 34343 on > vinson3.sfc.wide.ad.jp, which is located in Japan. > The total amount of test traffic is approximately 90 connections (not > parallel), and each of them uses approximately maximum 2048Byte. > > - System requirement > Our script works on Mac OSX 10.5 or 10.6, Linux (kernel 2.6) and FreeBSD (7.0 > or higher). This also requires python 2.5 or higher, and libpcap > NOTE. if you try in a virtual machine on Windows, please connect the guest OS > via not NAT but bridge. > > How to run experiment is described below per-OS basis. > > After the experiment, you will find 3 log files (logxxxxxxxxx.txt) in the > same directory as the experiment. > Please send them to us ([email protected]) and tell me your network > information as much as you know (e.g., product name of the broadband router, > ISP name, product name of firewall appliance etc...) > In addition, let us know if you have hesitation to open these information. > This experiment doesn't collect traffic information other than those our > script generated. > > ***** How to run the experiment (Mac OSX) ***** > > 1. Filtering RST TCP segment from OS > Execute a following command by root: > ipfw add 101 deny tcp from any to vinson3.sfc.wide.ad.jp dst-port > 34343,80,443 tcpflags rst > > NOTE: if you are already running ipfw, please add equivalent rules > After the experiment, you can revert by "ipfw delete 101" > > 2. Executing script > Download script from > http://www.micchie.net/software/tcpexposure/for_distrib.tar.gz, and > decompress it to anywhere you like (e.g., tar xzf for_distrib.tar.gz by > command line) > > In the for_distrib directory, execute a following command by root: > sh run-bsd2.sh > (This will take approximately 30 min.) > > > ***** How to run the experiment (Linux) ***** > > 1. Filtering RST TCP segment from OS > Execute following command by root: > /sbin/iptables -A OUTPUT -p tcp -d vinson3.sfc.wide.ad.jp --tcp-flags RST RST > -m multiport --dports 34343,80,443 -j DROP > > NOTE: if you are already running iptables, please add equivalent rules > After the experiment, you can revert by opposite commands - using -D instead > of -A > > 2. Executing script > Download script from > http://www.micchie.net/software/tcpexposure/for_distrib.tar.gz, and > decompress it to anywhere you like (e.g., tar xzf for_distrib.tar.gz) > > In the for_distrib directory, execute a following command by root: > sh run-linux2.sh > (This will take approximately 30 min.) > > > ***** How to run the script (FreeBSD) ***** > > 1. Filtering RST TCP segment from OS > If you are using neither ipfw nor pf: > Load pf kernel module with a following command by root: > kldload /boot/kernel/pf.ko > > Add following 2 lines to /etc/pf.conf (please replace IFNAME to your outgoing > interface name (e.g., em0): > pass out all > block out quick on IFNAME proto tcp to vinson3.sfc.wide.ad.jp port > {34343,80,443} flags R/R > > Execute following command by root: > pfctl -e -f /etc/pf.conf > > If you are already running pf, please add equivalent rules > After the experiment, you can revert settings by cleaning up /etc/pf.conf > and executing "pfctl -d" by root > > If you are already using ipfw: > Please add a following rule to ipfw configuration: > deny tcp from any to vinson3.sfc.wide.ad.jp dst-port 34343,80,443 tcpflags > rst > > 2. Executing script > Download script from > http://www.micchie.net/software/tcpexposure/for_distrib.tar.gz, and > decompress it to anywhere you like (e.g., tar xzf for_distrib.tar.gz) > > In the for_distrib directory, execute a following command by root: > sh run-bsd2.sh > (This will take approximately 30 min.) > > > Best regards, > - Michio > > _______________________________________________ > multipathtcp mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/multipathtcp
