Install coturn UDP with DTLS to Centos 7
##Source
#
Installation Coturn
rpm -Uvh http://download-ib01.fedoraproject.org/pub/epel/7/x86_64/Packages/c/coturn-4.5.1.1-1.el7.x86_64.rpm
FOR secretKey : openssl rand -hex 32
nano /etc/coturn/turnserver.conf
tls-listening-port=5349
listening-ip=ip priv
relay-ip=ip priv
min-port=65510
max-port=65530
fingerprint
use-auth-secret
static-auth-secret=secretkey
realm=domain
user-quota=12
total-quota=1200
bps-capacity=0
no-udp
no-tcp
no-tls
no-tcp-relay
stale-nonce=600
cert=/etc/coturn/cert.pem
pkey=/etc/coturn/privkey.pem
cipher-list="ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AES:RSA+3DES:!ADH:!AECDH:!MD5"
dh-file=/etc/coturn/dhparam.pem
no-stdout-log
log-file=/var/log/turnserver.log
syslog
simple-log
no-multicast-peers
mobility
no-cli
no-tlsv1
no-tlsv1_1
yes | cp /etc/nginx/cert/dhparam.pem /etc/coturn/
yes | cp /etc/letsencrypt/live/domain/privkey.pem /etc/coturn/
yes | cp /etc/letsencrypt/live/domain/cert.pem /etc/coturn/
##check conf
egrep -v “^$|^[[:space:]]*#” /etc/coturn/turnserver.conf
##IPTABLES : TurnServer
/sbin/iptables -A INPUT -p udp -m state --state NEW --dport 5349 -j ACCEPT
/sbin/iptables -A OUTPUT -p udp -m state --state NEW -m multiport --sports 65510:65530 -j ACCFEPT