TRANSPARENT PROXY about f-stack

[whl739]

@tigerjibo
Sorry, i don't know more about transparent proxy.
All i know is that as @alonbg says, this link shows how to configure transparent proxy, it must use iptables, and ipfw in F-Stack can do the same thing.

[tigerjibo]

@whl739 :
Thanks for your reply as soon as possible. I will modify ipfw and ipfil as to support the transparent proxy.

[whl739]

We didn't test transparent proxy with nginx.
But as i know, IP_TRANSPARENT is not supported by FreeBSD stack and IP_BINDANY is supported.
Since the configure checks for these options on Linux, it couldn't detective the real supported options on F-Stack.
Maybe i should modify auto/unix to support IP_BINDANY.

[alonbg]

@whl739 thank you. I believe you are correct, IP_BINDANY is the FreeBSD equiv to Linux's IP_TRANSPARENT. This nginx feature (i.e. NGX_HAVE_TRANSPARENT_PROXY) is not enabled by default in auto/unix. I don't think it should be as it requires additional system setup in Linux and maybe on FreeBSD to properly function.

[alonbg]

@whl739 , considering configure would be modified somehow to detect IP_BINDANY option ...
Can you asses please what additional configuration, tools, functionality is missing for this to work ?

[whl739]

A simple way:

diff --git a/app/nginx-1.11.10/auto/unix b/app/nginx-1.11.10/auto/unix
index 2354d29..0666770 100644
--- a/app/nginx-1.11.10/auto/unix
+++ b/app/nginx-1.11.10/auto/unix
@@ -365,7 +365,7 @@ ngx_feature_incs="#include <sys/socket.h>
 ngx_feature_path=
 ngx_feature_libs=
 ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_TRANSPARENT, NULL, 0)"
-. auto/feature
+#. auto/feature


 # FreeBSD bind to any address for transparent proxying
@@ -377,7 +377,8 @@ ngx_feature_incs="#include <sys/socket.h>
                   #include <netinet/in.h>"
 ngx_feature_path=
 ngx_feature_libs=
-ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_BINDANY, NULL, 0)"
+#ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_BINDANY, NULL, 0)"
+ngx_feature_test="int a;"
 . auto/feature

[alonbg]

@whl739 thank you. Additionally, for this socket option to work, the FreeBSD stack should support iptables.
I assume this is not supported yet ...

[whl739]

We have already supported ipfw. It is similar with iptables in Linux.

[tigerjibo]

Hi whl739:
How to use the ipfw tool to support the transparent proxy for the tcp or udp protocol?

[oceansw]

Hi, @tigerjibo
As mentioned you have modified the ipfw to support transparent proxy, does it work now?
Thanks in advance.

[tigerjibo]

Hi: For now , the code has finished ,But I don't have enough time to test it * Best RegardsJi Bo (冀博)---------------------------------------------------------------------------* 2017-12-28 11:13 GMT+08:00 oceansw <[email protected]>:

…

Hi, @tigerjibo <https://github.com/tigerjibo> As mentioned you have modified the ipfw to support transparent proxy, does it work now? Thanks in advance. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#43 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AER2r7NLkBC7z1hJZPW_C75-QmWAFALRks5tEwdbgaJpZM4OLrQa> .

[rolfliu]

Hi @tigerjibo I want to use nginx transparent proxy, but while test, I got a setsockopt(IP_BINDANY) error using the f-stack, could you send me the patch you modified?
Thank you very much.
My email address is [email protected]

Best Regards!