# Netflow v9 not being recieved over UDP **URL:** https://discuss.elastic.co/t/netflow-v9-not-being-recieved-over-udp/101103 **Category:** Logstash **Created:** [September 20, 2017, 6:13am UTC](https://discuss.elastic.co/t/netflow-v9-not-being-recieved-over-udp/101103 "2017-09-20T06:13:13Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![Sjaak01](https://avatars.discourse-cdn.com/v4/letter/s/73ab20/32.png) [@Sjaak01](https://discuss.elastic.co/u/Sjaak01) #### Post date: [September 27, 2017, 4:45am UTC](https://discuss.elastic.co/t/netflow-v9-not-being-recieved-over-udp/101103/2 "2017-09-27T04:45:51Z")
Found your topic after opening mine. I have the same issue after updating from 5.4 to 5.6. > [@5.6.1 Netflow not working](https://discuss.elastic.co/t/5-6-1-netflow-not-working/101923): > > Hi, I've updated from 5.4 to 5.6.1 so I could use the latest netflow codec with support for Fortigate devices but now I got no netflow data coming in anymore. I did not change the config and logstash log shows no errors. config input { udp { port =\> 9995 type =\> "netflow" codec =\> netflow { } } } filter { mutate { add\_field =\> { "[netflow][ipv4\_dst\_host]" =\> "%{[netflow][ipv4\_dst\_addr]}" "[netflow][ipv4\_src\_host]" =\> "%{[netflow][ipv4\_src\_addr]}" } } if… Lets hope somebody can help... --- _[View the full topic](https://discuss.elastic.co/t/netflow-v9-not-being-recieved-over-udp/101103)._