Score:1

Redirect all local traffic to shadow-socks proxy

gb flag

Iptables reroute to shadowsocks

I have ubuntu 20.04 vps with shadow-socks server on it.

I also have ubuntu 20.04 on my pc, with shadow-socks client running on it. Currently using shadow-socks-libev version.


The goal is to redirect all requests to 127.0.0.1:1080, where proxy client is running.

I followed recommendations from this question and this blog, where the answer is pointing to. Also saw this qna.

However, nothing made it work for me.


Steps I made

I. I created admin user for running shadow socks client only.

II. I made systemd unit to start client on boot from separate user, content of file listed below:

[Unit]
Description=SahdowSocks
After=network.target
After=network-online.target

[Service]
ExecStart=ss-local -c /etc/shadowsocks-client/config.json
Restart=on-failure
User=socks_user
Group=socks_user

[Install]
WantedBy=multi-user.target 

At this point if I'm setting 127.0.0.1:1080 in my browser (firefox) as a socks5 proxy - it works fine.

III. Then I made iptables rules, according to the links above.

sudo iptables -t nat -A OUTPUT -p tcp -m owner ! --uid-owner socks_user --dport 80 -j REDIRECT --to-port 1080
sudo iptables -t nat -A OUTPUT -p tcp -m owner ! --uid-owner socks_user --dport 443 -j REDIRECT --to-port 1080

After that, I can still use the browser if connected directly to the proxy through settings, but after switching to no proxy/system proxy - getting request timeout. All other apps also have no connection.

*Just to mention, if I do ping to 1.1.1.1 it returns fine

*If I do wget http://someurl it ends with no result.

So I assume I'm getting reroute loop (?), but don't understand why.

Keytel avatar
gb flag
Answer could be found here: https://superuser.com/questions/1670641/redirect-all-local-traffic-to-shadow-socks-proxy
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