Why can't connect by udp?
Summary:
i open udp port by firewalld, and test by iperf and udp server, but i can't get response, ACK.
but netcat tool says connection success.
Content (required):
ubuntu@instance-****:~$ sudo firewall-cmd --list-all
public
target: default
icmp-block-inversion: no
interfaces:
sources:
services: dhcpv6 dhcpv6-client http https imap ldap mysql ssh
ports: 3000/tcp 80/tcp 22/tcp 433/tcp 3001/tcp 3002/tcp 3006/tcp 3007/tcp 25565/tcp 3306/tcp 5900-5910/tcp 8000-8900/tcp 30037/tcp 24454/tcp 51820/udp 24450-24453/udp 24455-24460/udp 24454/udp 25565/udp
protocols:
forward: yes
masquerade: no
forward-ports:
source-ports:
icmp-blocks:
rich rules:
ubuntu@instance-****:~$ netstat -nul
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State