Jon, This is great. We have a question about VPNs. We want to create a VPN gateway between the library and Robert's machine (cwelug.org) . SSH tunnels are not enough, because we can only forward one port at a time and we can't make FTP work because it needs a second outgoing port to be tunnelled (in PASV mode.)
What software should we use? I know about FreeSWAN and OpenVPN. Thanks, Ed Jon Drews wrote: >Hi: > > I did some experiments with running UNIX laptops in adhoc mode and >projecting X apps from one to the other. I thought I would send in >what I did in light of the previous interest about VPN and Linux thin >clients. > >I had an OpenBSD laptop and a FreeBSD laptop. Here is what I did to >get the FreeBSD laptop to use the X applications from the OpenBSD >laptop. > >On the OpenBSD laptop I did this: > >$ /usr/bin/sudo ifconfig wi0 inet 192.168.0.4 netmask 255.255.255.0 nwid cwelug >mediaopt adhoc > >and on the FreeBSD laptop I did: ># ifconfig wi0 inet 192.168.0.3 netmask 255.255.255.0 ssid cwelug >mediaopt adhoc > >NOTE: the laptops cannot be connected to any other network for this >adhoc mode to work. >Also note that "nwid" is a synonym for "ssid". > >I had the appropriate entries in my /etc/hosts files. For FreeBSD that would >be: >127.0.0.1 mobile.silbsd.org localhost.silbsd.org localhost >192.168.0.3 mobile.silbsd.org mobile >192.168.0.4 notebook.silbsd.org notebook > >notebook is the OpenBSD laptop and mobile is the FreeBSD laptop. > >I ran an X session on the FreeBSD laptop, then opened an Xterm and did >as an ordinary user: >[EMAIL PROTECTED] ssh -X [EMAIL PROTECTED] > >I discovered the following: >1) From the Xterm that I initiated the X enabled ssh connection I >could "background" many applications and run them simultaneously. It >looked like this: > >[EMAIL PROTECTED] ssh -X [EMAIL PROTECTED] >[EMAIL PROTECTED]'s password: >Last login: Mon Aug 29 18:27:23 2005 from mobile.silbsd.org >OpenBSD 3.6-stable (GENERIC) #5: Sat Jul 9 07:54:17 MDT 2005 > >Welcome to OpenBSD: The proactively secure Unix-like operating system. > >Please use the sendbug(1) utility to report bugs in the system. >Before reporting a bug, please try to reproduce it with the latest >version of the code. With bug reports, please try to ensure that >enough information to reproduce the problem is enclosed, and if a >known fix for it exists, include that as well. > >$ gnumeric & >[1] 29884 >$ /home/xfce/docs/spreadsheets/checking2005.gnumeric > >$ octave & >[2] 13200 >$ jobs >[2] + Stopped (tty output) octave >[1] - Running gnumeric >$ xterm -e octave & >[3] 18231 >$ /home/xfce/docs/BSDCert/survey/SPREADSHT_ALL_MS2KXLS.gnumeric >/home/xfce/docs/BSDCert/survey/SPREADSHT_ALL_MS2KXLS.gnumeric >/home/xfce/docs/BSDCert/EnglishSurveyResults.xls > >[3] - Done xterm -e octave >$ > >2) I found that if I opened a file manager I could click on the files >and they would open with the appropriate application. > >3) I opened two large Gnumeric spreadsheets and four instances of >Gimp. Each Gimp loaded a large digital camera picture. I found that >Gimp was pretty responsive when doing editing operations and zooming >the large digital jpegs. > >4) I then ran GMplayer from the server laptop and found that it would >play the movies but that they were in slow motion. > >5) I tried to drag n' drop from a GUI file manager on the server to >the same type of GUI file manager on the client but drag n' drop did >not work. > >6) I could copy and paste between applications on the client and >server. Actually I only tried tried this between two Vi editors. One >was on the client and one was on the server. > >I ran top on the client laptop (the FreeBSD one) and the memory >consumption was quite low: >last pid: 255; load averages: 0.04, 0.08, 0.03 up 0+00:29:13 20:44:39 >44 processes: 1 running, 43 sleeping >CPU states: 0.0% user, 0.0% nice, 0.0% system, 0.5% interrupt, 99.5% idle >Mem: 28M Active, 13M Inact, 19M Wired, 24K Cache, 17M Buf, 92M Free >Swap: 304M Total, 304M Free > > PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND > 190 bsd 2 0 21024K 15204K select 0:19 1.42% 1.42% XFree86 > 255 bsd 28 0 1996K 1220K RUN 0:00 2.69% 0.49% top > 220 bsd 2 0 2864K 2360K select 0:06 0.05% 0.05% ssh > 231 bsd 2 0 2844K 2304K select 0:06 0.00% 0.00% ssh > > >I think this method is viable alternative to projecting the entire >desktop from the server onto it's clients. > > > > -- Ed Howland WDT Solutions, LLC. [EMAIL PROTECTED] (314) 962-0766 _______________________________________________ CWE-LUG mailing list [email protected] http://www.cwelug.org/ http://www.cwelug.org/archives/ http://www.cwelug.org/mailinglist/
