nlzy / nsproxy Goto Github PK

Currently, when proxied application makes a connection, it immediately succeeds as if port is always open. This works very differently from proxychains, which waits to establish connection with the remote. It is a subtle difference, but it breaks software that needs to check if port is truly open.

I am not familiar with LWIP and usage of namespaces - I couldn't identify area where connection is "accepted" locally.

Do you think it is even possible with the current architecture? And if yes, perhaps could point me to where to look at relevant pieces of the code, so I could try my hand at tweaking it?

how can I use socks5 username and password？

Hello again :)

I am trying now UDP. I've setup ncat listening locally on UDP port 8012 and using socks5 proxy, that supports UDP. Proxychains works, but with nsproxy I see "Forwarding udp:192.168.56.1:8012" but nothing in ncat. I tried both master and dev branches. Any ideas?

➜  build git:(master) ✗ proxychains4 ncat -u 192.168.56.1 8012
[proxychains] config file found: /etc/proxychains4.conf
[proxychains] preloading /usr/lib/x86_64-linux-gnu/libproxychains.so.4
[proxychains] DLL init: proxychains-ng 4.16
send test
receive test

➜  build git:(master) ✗ ./nsproxy -s 127.0.0.1 -p 47135 -vvv ncat -u 192.168.56.1 8012
[nsproxy] Proxy Server:       127.0.0.1:47135, SOCKS
[nsproxy] DNS Redirection:    Enabled, 1.1.1.1, TCP
[nsproxy] Verbose:            Yes
send test
[nsproxy] Forwarding udp:192.168.56.1:8012
[nsproxy] --- socks 20 bytes. udp:192.168.56.1:8012
[nsproxy] Closed 192.168.56.1:8012

proxychains4.conf:

strict_chain

[ProxyList]
socks5 127.0.0.1 47135

Hello nlzy

I use nsproxy in a debian 10 and when I exec ./nsproxy -x xxx -x xxx ... , it shows :

nsproxy: create net_namespace failed: Operation not permitted
nsproxy: nsproxy can't run on this system.
The OS is debian 10

uname -r
4.19.0-25-amd64

Is there a dependency missing? Please help me, thanks