Redirect traffic to multi desport

radwan1998 · 08-03-2022, 06:19 AM

Hello,

I have a question I want to redirect traffic from port x and y to 53.

I mean like this

iptables -t nat -A PREROUTING -p udp --dport 53 -m string --algo bm --from 20 --hex-string "|02743107776f726d6e657402657500|" -j REDIRECT --to-ports x, y, z

So Destination port should be 53

Thanks

TB0ne · 08-03-2022, 08:21 AM

Quote:

Originally Posted by radwan1998

Hello,
I have a question I to redirect traffic from port x and y to 53. I mean like this

Code:

iptables -t nat -A PREROUTING -p udp --dport 53   -m string --algo bm --from 20 --hex-string "|02743107776f726d6e657402657500|" -j REDIRECT --to-ports x, y, z

So Destination port should be 53

Ok...so what's your question??? Have you tried the command you put in here?? What's the problem/issue you're having and trying to solve by doing this??

radwan1998 · 08-03-2022, 11:34 AM

Quote:

Originally Posted by TB0ne

Ok...so what's your question??? Have you tried the command you put in here?? What's the problem/issue you're having and trying to solve by doing this??

I have installed iodine server on my VPS but the number of connected users at same time is limited #16 , I tried to use different ports for each domain, but as you know dns tunnel works only on port 53 now my question is redirect traffic of multiport to 53, so my purpose is to increase the number of connected users
This is iodine tunnel
https://code.kryo.se/iodine/

radwan1998 · 08-03-2022, 11:44 AM

Quote:

Originally Posted by TB0ne

Ok...so what's your question??? Have you tried the command you put in here?? What's the problem/issue you're having and trying to solve by doing this??

The command I put here is wrong for multiport, but it should look like it

TB0ne · 08-03-2022, 11:54 AM

Quote:

Originally Posted by radwan1998

I have installed iodine server on my VPS but the number of connected users at same time is limited #16 , I tried to use different ports for each domain, but as you know dns tunnel works only on port 53 now my question is redirect traffic of multiport to 53, so my purpose is to increase the number of connected users
This is iodine tunnel https://code.kryo.se/iodine/

...and...

Quote:

Originally Posted by radwan1998

The command I put here is wrong for multiport, but it should look like it

Did you read the iodine docs?? The part where they *EXPLICITLY SAY* that it can only handle 16 users??? Iodine only supports 16 users, period...and there are iptables commands on the iodine github page. Tried any of those?

If you want more than 16 users, start a second instance listening on another port.

radwan1998 · 08-03-2022, 12:00 PM

Quote:

Originally Posted by TB0ne

...and...

Did you read the iodine docs?? The part where they *EXPLICITLY SAY* that it can only handle 16 users??? Iodine only supports 16 users, period...and there are iptables commands on the iodine github page. Tried any of those?

If you want more than 16 users, start a second instance listening on another port.

Yes, for one domain it works fine , but it support only 16 users,
I want more than 16 users, I tried but I don't know how should the iptables look like.

I can Listening on another port, but dns traffic should go through 53 always
That is the problem

radwan1998 · 08-03-2022, 12:14 PM

Quote:

Originally Posted by TB0ne

...and...

Did you read the iodine docs?? The part where they *EXPLICITLY SAY* that it can only handle 16 users??? Iodine only supports 16 users, period...and there are iptables commands on the iodine github page. Tried any of those?

If you want more than 16 users, start a second instance listening on another port.

(((Make the server listen on 'port' instead of 53 for traffic. If 'listen_ip' does not include localhost, this 'port' can be the same as 'dnsport'. Note: You must make sure the dns requests are forwarded to this port yourself.)))
So the question how to forward requests from multiport to 53

TB0ne · 08-03-2022, 12:49 PM

Quote:

Originally Posted by radwan1998

Yes, for one domain it works fine , but it support only 16 users, I want more than 16 users, I tried but I don't know how should the iptables look like. I can Listening on another port, but dns traffic should go through 53 always That is the problem

That's not a problem, that's what it's designed to do, isn't it??? Route IPv4 traffic through DNS, which is port 53. And what you WANT is not what iodine DOES...it supports 16 users, period. Want more?? Then rewrite the code to do what you want.