Hello guys, Didn't think of starting a new thread because what I am inquiring about is very close to this thread. Was looking at this solution offered below by Kiggs and got me thinking. If I have a proxy/gateway that allows SMTP to all hosts on the local network but permits HTTP only to a few a hosts, can those hosts not allowed to use HTTP use the solution below(or a close variation) to go through port 25 and connect to port 80 on a remote server? Some time back I read something that smelled like this but dismissed it (on account of TCP not being able to mix up sockets) but now..... looks like it is possible. Has someone encountered such a scenario or been in an instance where such a solution has been applied?
On Wednesday 06 June 2007 17:43, Kiggundu Mukasa wrote: > Do they allow SSH out? > > If they do then all you have to have is access to a Ugandan Linux box > > From your root account on your laptop run the following command > > ssh -L 25:localhost:25 [EMAIL PROTECTED] > > Where some.machine.co.ug is the server you have access to in Uganda. > > That way you map/forward the SMTP port of your laptop to the SMTP > port of the Ugandan machine. > > You will be asked to enter your password on the Ugandan machine and > after that you can send all the mail you want. Can be a bit slow but > gets around the problem easily > > Second option is to get all the people you are sending mail to to > sign up on http://kym.net/gpgkeys/ > > Then all your mail will be encrypted :-) > > > Kiggs > > On Jun 6, 2007, at 4:28 PM, Wire James wrote: > > Hi Guys > > > > Recently I visited a country where all SMTP traffic is not allowed > > to go directly to the internet but through ISP servers. I blieve it > > is a way of them monitoring the citizens' email. However, along the > > way I got to learn that stunnel can help me bypass that restriction > > once well configured. > > > > My set up is as follows: > > > > I have a SLED powered laptop with postfix as my local mail server. > > I use Evolution as my email client and dump all outgoing mail to > > the local mail server which is then responsible for onward delivery > > to any other server on the internet. So, I want to set up stunnel > > such that as my smtp server tries to send out mail, the stunnel > > takes over and alters the port on which the mail traffic is being > > transmitted. > > > > As I speak, stunnel is already installed on the laptop. It is the > > configurations that are giving me some hard time. Any help out there? > > > > Wire > > -- > > Wire Lunghabo James > > Linux Solutions > > Kagga House - Annex > > Bugolobi > > Kampala, Uganda > > www.linuxsolutions.co.ug > > yahoo: lunghabo > > jabber: lunghabo > > skype: lunghabo > > Mobile: +256 712 726609 > > Office: +256 312 278767 > > _______________________________________________ > > LUG mailing list > > [email protected] > > http://kym.net/mailman/listinfo/lug > > %LUG is generously hosted by INFOCOM http://www.infocom.co.ug/ > > > > The above comments and data are owned by whoever posted them > > (including attachments if any). The List's Host is not responsible > > for them in any way. > > --------------------------------------- > > -- Acta Virum Probant -- > > ---- > Kiggundu Mukasa > KYM-NET LTD. > Plot 80 Kanjokya Street > P.O. Box 24284 Kampala, Uganda > Tel: +256 772 972255 > +256 414 571779 > Fax: +256 312 262122 > > http://kym.net -- George W. Lule Managing Director East African Center for Open Source Software Tel: Office: +256-414-223802 Mob: +256-712-218748 +256-782-204000 _______________________________________________ LUG mailing list [email protected] http://kym.net/mailman/listinfo/lug %LUG is generously hosted by INFOCOM http://www.infocom.co.ug/ The above comments and data are owned by whoever posted them (including attachments if any). The List's Host is not responsible for them in any way. ---------------------------------------
