# Send SYN to backend as soon as Client sends one
**URL:** https://discourse.haproxy.org/t/send-syn-to-backend-as-soon-as-client-sends-one/4123
**Category:** Help!
**Created:** [August 1, 2019, 1:55am UTC](https://discourse.haproxy.org/t/send-syn-to-backend-as-soon-as-client-sends-one/4123 "2019-08-01T01:55:29Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@nalgoel](https://discourse.haproxy.org/u/nalgoel)
#### Post date: [August 1, 2019, 1:55am UTC](https://discourse.haproxy.org/t/send-syn-to-backend-as-soon-as-client-sends-one/4123/1 "2019-08-01T01:55:29Z")
Hi,
I am new with HAProxy and I am running an experiment where I want HAProxy to send SYN to the backend as soon as Client sends SYN. Currently, I see that HAProxy completes 3-way Handshake with Client first and then starts 3-way with backend. My aim is to parallelize these 2 handshakes.
I believe this is because of native DDOS prevention against SYN flood from HAProxy. Is there a way to solve this?
Thanks,
Nalin
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### Author:  [@lukastribus](https://discourse.haproxy.org/u/lukastribus)
#### Post date: [August 1, 2019, 9:11am UTC](https://discourse.haproxy.org/t/send-syn-to-backend-as-soon-as-client-sends-one/4123/2 "2019-08-01T09:11:32Z")
No, haproxy is a layer 7 load-balancer, it does not forward packets. What you are trying to achieve is not possible at this layer.
When the client sends a SYN to the port haproxy is running, haproxy does even know about it yet, because the kernel only passes the connection to the application when the 3 way handshake is completed, and even then, haproxy likely wont yet know what backend server to connect to, as it could depend on layer 7 informations.
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### Author:  [@nalgoel](https://discourse.haproxy.org/u/nalgoel)
#### Post date: [August 1, 2019, 3:28pm UTC](https://discourse.haproxy.org/t/send-syn-to-backend-as-soon-as-client-sends-one/4123/3 "2019-08-01T15:28:18Z")
Thanks for your reply. Wondering if there are any another alternative solutions that I can use.
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### Author:  [@lukastribus](https://discourse.haproxy.org/u/lukastribus)
#### Post date: [August 1, 2019, 4:00pm UTC](https://discourse.haproxy.org/t/send-syn-to-backend-as-soon-as-client-sends-one/4123/4 "2019-08-01T16:00:38Z")
IPVS is what you are looking for.