悲催欠费

起因是和四五个小伙伴联机文明6联了一晚上，然后所有流量都走的ECS服务器，最终导致巨额流量欠费。于是需要修改一些openvpn的配置，令其不作为默认网关，只有在局域网内机器互联时走该服务器。

image-20240917171020879-HQdN.png

配置优化-服务端

将如下一行注释

push "redirect-gateway def1 bypass-dhcp"

整体内容如下：

# Secure OpenVPN Server Config
# Basic Connection Config
dev tap-vpn
proto udp
port 1194
keepalive 10 120
max-clients 10
# Certs
ca ca.crt
cert server.crt
key server.key
dh dh.pem
tls-auth ta.key 0
# Ciphers and Hardening
reneg-sec 0
remote-cert-tls client
crl-verify crl.pem
tls-version-min 1.2
cipher AES-256-CBC
auth SHA512
tls-cipher TLS-DHE-RSA-WITH-AES-256-GCM-SHA384:TLS-DHE-RSA-WITH-AES-256-CBC-SHA256:TLS-DHE-RSA-WITH-AES-128-GCM-SHA256:TLS-DHE-RSA-WITH-AES-128-CBC-SHA256
# Drop Privs
user nobody
group nobody
# IP pool
server 172.31.100.0 255.255.255.0
topology subnet
ifconfig-pool-persist ipp.txt
client-config-dir ../client
# Misc
persist-key
persist-tun
comp-lzo
# DHCP Push options force all traffic through VPN and sets DNS servers
# push "redirect-gateway def1 bypass-dhcp"
push "dhcp-option DNS 8.8.8.8"
push "dhcp-option DNS 8.8.4.4"
# Logging
log-append /var/log/openvpn.log
status /var/log/openvpn-status.log
verb 3
# allow multi user using same ca
duplicate-cn
# allow users see each other
client-to-client

配置优化-客户端

将如下一行注释

redirect-gateway def1

整体代码如下：

# Secure OpenVPN Client Config
#viscosity dns full
#viscosity usepeerdns true
#viscosity dhcp true
tls-client
pull
client
dev tap-vpn
proto udp
remote 123.123.123.123 1194
route 172.31.100.0 255.255.255.0
nobind
persist-key
persist-tun
comp-lzo
verb 3
ca E:\\_Tools\\inet\\vpn-client-02-config\\ca.crt
cert E:\\_Tools\\inet\\vpn-client-02-config\\client.crt
key E:\\_Tools\\inet\\vpn-client-02-config\\client.key
tls-auth E:\\_Tools\\inet\\vpn-client-02-config\\ta.key 1
remote-cert-tls server
ns-cert-type server
key-direction 1
cipher AES-256-CBC
tls-version-min 1.2
auth SHA512
tls-cipher TLS-DHE-RSA-WITH-AES-256-GCM-SHA384:TLS-DHE-RSA-WITH-AES-256-CBC-SHA256:TLS-DHE-RSA-WITH-AES-128-GCM-SHA256:TLS-DHE-RSA-WITH-AES-128-CBC-SHA256