Ubuntu – Create Wifi Hotspot for sharing SOCKS Proxy on Ubuntu Server

networkingPROXYsocksUbuntuwifi-hotspot

I'm using Ubuntu Server and I have a SOCKS Proxy server on my client which is created with ssh -D command.
I want to create a Wifi Hotspot on this computer which passes the traffic through this SOCKS Proxy. I'm connected to Internet through ethernet, so Wifi is idle.

Is this possible? How can I achieve this?

Best Answer

TCP traffic from the hotspot can be passed through the ssh -D socks proxy using redsocks. With redsocks installed and configured one can use iptables to redirect all traffic from the wifi hotspot to redsocks which then passes it through the socks proxy.

For instance if your wifi hotspot is on the 10.42.0.1/24 subnet and the incoming redsocks port is 12345 issue:

sudo iptables -F
sudo iptables -t nat -F
sudo iptables -t nat -A PREROUTING -s 10.42.0.0/24 -p tcp -j REDIRECT --to-ports 12345

For a detailed set of instructions visit http://abidmujtaba.blogspot.com/2016/07/ubuntu-create-wifi-hotspot-access-point.html

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Sorry for answering this maybe too late. I'm new on stackexchange and saw it today with no possibility to answer before. Let's work...

To redirect all requests from that pcs to the socks proxy port you'll need some iptables. Let's supposse you have that proxy on port 9050 and the interface name for your card is eth0 (I mean the one of your gateway-server which is connected to the nearest internet side) because you didn't provided data... so completing with some imagination :)

To enable forwarding and to do the NAT masquerading you'll need to execute echo 1 > /proc/sys/net/ipv4/ip_forward and then the iptables rules:

iptables -P FORWARD ACCEPT
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

And to redirect all web requests of your internal network clients to the proxy port you'll need:

iptables -t nat -A PREROUTING -p tcp --destination-port 80 -j REDIRECT --to-port 9050
iptables -t nat -A PREROUTING -p tcp --destination-port 443 -j REDIRECT --to-port 9050

With these rules, the requests arrive to the port on which there must be "something" well configured to get working everything. Good luck! or if I got late to the post, maybe you can share with us how you dealed with this.

Best Answer

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