/etc/openvpn/openvpn.conf

local ctf.hackbbs.org
port 1701
proto udp
dev tap0
mode server
tls-server
tun-mtu 1500
auth-nocache
ping 10
#ping-restart 60
mssfix
persist-key
persist-tun
ca /etc/openvpn/ca.crt
cert /etc/openvpn/server.crt
key /etc/openvpn/server.key  # This file should be kept secret
dh /etc/openvpn/dh1024.pem
server-bridge 172.31.38.1 255.255.255.0 172.31.38.2 172.31.38.254
ifconfig 172.31.38.1 255.255.0.0
ifconfig-pool-persist /etc/openvpn/ipp.txt
client-config-dir ccd
ccd-exclusive
push "route 172.31.0.0 255.255.0.0"
push "route 10.100.0.0 255.252.0.0"
push "route-gateway 172.31.38.1"
client-to-client
#keepalive 10 120
cipher BF-CBC
comp-lzo
max-clients 15
chroot /etc/openvpn/
status /var/log/openvpn_status.log
log-append /var/log/openvpn.log
verb 1
mute 10