ISP blocks inbound connection - is my workaround realistic?

[rolionoff]

My ISP gives every customer an internal IP and lets us share one "official" IP (to use only technological expressions: they use NAT to my disadvantage) ... easy to see that I can't get inbound connection, which I would like to have for VoIP. Besides that, they block outgoing port 25, so I have to forward outgoing mail to mail.isp.xx. When I use my laptop at our university, I have to change everything because mail.isp.xx only accepts mail from the 10.x.x.x side...
So I thought of renting a virtual server with its own IP for 100 euros a year and reactivating my old laptop for routing purposes.
Then I would set up a 24/7 connection from my laptop to the virtual server. On the virtual server there should run a program which forwards all incoming connections through the already running 24/7 connection (compressed & encrypted, if possible) to the old laptop. In other words, the combo old laptop & virtual server should give me the comfort of a worldwide IP at home.

Question: Has someone done something similar? Or could someone give me a hint how to do this, respectively which program to use?

Thanx
rolionoff

[ivanl]

You're from Switzerland? What you're describing is happening in Switzerland?

Yes, if you're mainly trying to circumvent the INCOMING connection issue, you get an outside server with a public IP and you (your laptop) tunnel (or VPN) to it. Henceforth, you will then be known from the world as the server's IP address. The server would be running gentoo and you can run any services. Make sure your ISP is not blocking VPN, else your laptop-to-server would need some special tunneling, which is aplenty in the Linux world

If you're mainly trying to circumvent OUTGOING connections, like people from China or Myanmar or some heavy-censorship govt, then effectively you need a SOCKS5 server on the outside. With it, more than 90% of your outgoing connections can be restored.

[rolionoff]

Yes, this is happening in Switzerland. Thank God it's not the government which causes me those problems... My local Cable TV provider has different types of access, the one I have/need has no incoming ports open. If I want all incoming ports open I have to pay 3x more and I get 256/128 Kbps, which I don't need... I'm pretty happy with 128/64 Kbps. ADSL won't work because we have a PBX at home with no access on the subscriber side

Fortunately, VPN works at home! This could be a solution... So is there a free VPN server for Gentoo?
_________________
Assume Epsilon>0...

At least, honourable mathematicians have found the number Epsilon. It is so small that it becomes negative if one divides it by 2.

[someguy]

man i have 3 things to say for you in this situation
1. your isp blows baddly
2. im sorry
3. get a new isp:P
_________________
print pack"C*",split/\D+/,`echo "16iII*o\U@{$/=$z;[(pop,pop,unpack"H*",<>
)]}\EsMsKsN0[lN*1lK[d2%Sa2/d0<X+d*lMLa^*lN%0]dsXx++lMlN/dsM0<J]dsJxp"|dc`
while [ 1 ] ; do echo "*" | telnet ip.of.print.er 9100 ; done

[Phonics3k]

there are a few free vpn servers around:

OpenVPN
tinc

There are more too, I find that OpenVPN has served me well

ton install just type