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tramadol IPMasquerading+Napster mini-HOWTO John E. Danner v1.6, 11 April 2000 This tramadol ini-HOWTO present a way to allow users behind an IPMasq'd system to use Naps tramadol er. For information about Napster, please see their website at Napster Home tramadol age 1. DISCLAIMER In order to allow Napster to w tramadol rk correctly, you will need to put a hole in the IP Masq'd system. This inhe tramadol ently presents potential security problems. Unfortunately I cannot accept re tramadol ponsibility for this hack. So if you do this, and you get burned because of tramadol t...not my fault. Great...now lets get into it... 2. INTRODUCTION After s tramadol tting up a network for my roommates and I, the problem arose that were not a tramadol le to use Napster because of the IPMasquerading I was doing. So I put some t tramadol me into and came up with this solution to the problem. I hope it works for y tramadol u like it did for me...but I can't promise anything. 3. BEFORE YOU BEGIN tramadol have tested this solution with the following variables: 1. Napster v2.0 Bet tramadol 5a (for Windows), visit Napster Homepage to en tramadol ure you have the newest version. 2. One external IP to the internet. 3. Cur tramadol ently 6 systems behind the IPMasq'd machine, 4 using Napster. 4. Using Linux tramadol kernel version 2.2.12-20 (RedHat v6.1 Distribution) 5. IPMASQADM utility ver tramadol ion 0.42, get it Here 4. PROCEDURE F tramadol rst off, ensure that you have the version (or newer) as listed above in the tramadol revious section. Also be sure they are installed correctly. 1. Install Napst tramadol r on the Windows client PC's 2. After installation and Napster user setup, t tramadol is version of Napster will begin "Finding Acceptable Local Data Port", af tramadol er a short time an error will occur. Note: If you have already installed tramadol napster v2.0 beta 5a, under the file menu select 'Properties.' 3. At thi tramadol point select the second option "I am not behind a firewall or I configur tramadol d my firewall - Use TCP port:" 4. Enter a unique number. Each computer that tramadol ill be running Napster will need to use a different port. It may be easie tramadol to use the last number of the IP address. For example: if the computer's tramadol IP is 192.168.1.2, then 6702 would be easiest to remember. Note: make tramadol sure you don't pick ports for services that are running (i.e. 21, 110, e tramadol c...see /etc/services for a listing) 5. Repeats steps 1 - 4 for all systems tramadol hat will be using Napster. 6. Now login to your IPMasq'd system and modify a tramadol startup file of your choice (I choose to use /etc/rc.d/rc.local) The tramadol ollowing lines pass the connection to the Napster clients running on the host tramadol behind your IPMasq'd system. (add them to the startup file - you'll need tramadol to one command for each host using Napster) /usr/sbin/ipmasqadm portfw -a tramadol -P tcp -L xxx.xxx.xxx.xxx 6702 -R 192.168.1.2 6702 /usr/sbin/ipmasqadm po tramadol tfw -a -P tcp -L xxx.xxx.xxx.xxx 6703 -R 192.168.1.3 6703 /usr/sbin/ipmas tramadol adm portfw -a -P tcp -L xxx.xxx.xxx.xxx 6704 -R 192.168.1.4 6704 /usr/sbi tramadol /ipmasqadm portfw -a -P tcp -L xxx.xxx.xxx.xxx 6705 -R 192.168.1.5 6705 N tramadol te: XXX.XXX.XXX.XXX is the IP address of the Linux IPMasqing system (the Inte tramadol net IP). Note: If you are having problems with IPMASQADM or IPMasquerading i tramadol general see the IPMASQ-HOWTO. This document is provided to help people who tramadol have their systems configured. The IPMASQ-HOWTO will get into a deeper discu tramadol sion of port forwarding and IPMasq'd in general. 5. DYNAMIC IP AREA (Dial-u tramadol or DHCP) See this and the Procedure section if your IP address changes eve tramadol ytime you connect to the internet. Thanks to Peter Illmayer for the followin tramadol submission to me: (This will work out best for those of you with dynamic IP tramadol s...) ------------------------------------------------------------ IN debia tramadol , I created a forward file in /etc/ppp/ip-up.d and put in #!/bin/sh ppp_ip="`/sbin/ifconfig ppp0 | grep 'inet addr' | awk '{print }' | sed -e /usr/sbin/ipmasqadm portfw -f /usr/sbin/ipmasqadm portfw -a -P tcp -L 6702 -R 192.168.0.2 6702 This is in a 2.2.x kernel with ipmasqadm installed with the appropriate kernel modules compiled in. --------------------------------------------------------------- Charles J. Fisher pointed out that a similar script can be used if you are using DHCP, insert the following lines in a script that runs af
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