[SOLVED] Issue when creating OpenVPN Server via scripts on OpenWrt 18: OpenWrt Router goes offline requiring system restore

Installing and Using OpenWrt Network and Wireless Configuration
16

hello wulfy,

here is my network config of my production router:

/etc/config/network 
root@infraverse:/etc/config# cat network

config interface 'loopback'
        option ifname 'lo'
        option proto 'static'
        option ipaddr '127.0.0.1'
        option netmask '255.0.0.0'

config globals 'globals'
        option ula_prefix 'fdfb:7e04:aca7::/48'

config interface 'lan'
        option type 'bridge'
        option ifname 'eth0.1'
        option proto 'static'
        option netmask '255.255.255.0'
        option ip6assign '60'
        option ipaddr '192.168.0.1'
        option gateway '192.168.0.1'
        option broadcast '192.168.0.255'
        option dns '8.8.8.8'

config interface 'wan'
        option ifname 'eth1.2'
        option proto 'dhcp'
        option hostname 'infraverse.network'

config interface 'wan6'
        option ifname 'eth1.2'
        option proto 'dhcpv6'

config switch
        option name 'switch0'
        option reset '1'
        option enable_vlan '1'

config switch_vlan
        option device 'switch0'
        option vlan '1'
        option vid '1'
        option ports '0t 1 2 3 5t'

config switch_vlan
        option device 'switch0'
        option vlan '2'
        option ports '4 6t'
        option vid '2'

config interface 'slave'
        option type 'bridge'
        option proto 'static'
        option ipaddr '172.16.0.1'
        option netmask '255.255.0.0'
        option ifname 'eth0.3 radio1'
        option gateway '172.16.0.1'
        option broadcast '172.16.255.255'

config interface 'tor'
        option proto 'static'
        option ipaddr '10.1.1.1'
        option netmask '255.0.0.0'
        option type 'bridge'
        option ifname 'eth0.4'

config switch_vlan
        option device 'switch0'
        option vlan '3'
        option vid '3'
        option ports '0t 5t'

config switch_vlan
        option device 'switch0'
        option vlan '4'
        option vid '4'
        option ports '0t 5t'

config interface 'lanvpn'
        option proto 'none'
        option type 'bridge'
        option ifname 'eth0.1 tun0'

config interface 'slavevpn'
        option proto 'none'
        option ifname 'tun1'

config interface 'torvpn'
        option proto 'none'
        option type 'bridge'
        option ifname 'eth0.4 tun2'

wan is still there, the interfaces I described are the internal networks/subnets/vlans.

I hope my firewall is alright, here is my firewall config:

/etc/config/firewall 
root@infraverse:/etc/config# cat firewall

config defaults
        option syn_flood '1'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'REJECT'

config zone
        option name 'lan'
        list network 'lan'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'ACCEPT'

config zone
        option name 'wan'
        list network 'wan'
        list network 'wan6'
        option input 'REJECT'
        option output 'ACCEPT'
        option forward 'REJECT'
        option masq '1'
        option mtu_fix '1'

config forwarding
        option src 'lan'
        option dest 'wan'

config rule
        option name 'Allow-DHCP-Renew'
        option src 'wan'
        option proto 'udp'
        option dest_port '68'
        option target 'ACCEPT'
        option family 'ipv4'

config rule
        option name 'Allow-Ping'
        option src 'wan'
        option proto 'icmp'
        option icmp_type 'echo-request'
        option family 'ipv4'
        option target 'ACCEPT'

config rule
        option name 'Allow-IGMP'
        option src 'wan'
        option proto 'igmp'
        option family 'ipv4'
        option target 'ACCEPT'

config rule
        option name 'Allow-DHCPv6'
        option src 'wan'
        option proto 'udp'
        option src_ip 'fc00::/6'
        option dest_ip 'fc00::/6'
        option dest_port '546'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-MLD'
        option src 'wan'
        option proto 'icmp'
        option src_ip 'fe80::/10'
        list icmp_type '130/0'
        list icmp_type '131/0'
        list icmp_type '132/0'
        list icmp_type '143/0'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-ICMPv6-Input'
        option src 'wan'
        option proto 'icmp'
        list icmp_type 'echo-request'
        list icmp_type 'echo-reply'
        list icmp_type 'destination-unreachable'
        list icmp_type 'packet-too-big'
        list icmp_type 'time-exceeded'
        list icmp_type 'bad-header'
        list icmp_type 'unknown-header-type'
        list icmp_type 'router-solicitation'
        list icmp_type 'neighbour-solicitation'
        list icmp_type 'router-advertisement'
        list icmp_type 'neighbour-advertisement'
        option limit '1000/sec'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-ICMPv6-Forward'
        option src 'wan'
        option dest '*'
        option proto 'icmp'
        list icmp_type 'echo-request'
        list icmp_type 'echo-reply'
        list icmp_type 'destination-unreachable'
        list icmp_type 'packet-too-big'
        list icmp_type 'time-exceeded'
        list icmp_type 'bad-header'
        list icmp_type 'unknown-header-type'
        option limit '1000/sec'
        option family 'ipv6'
        option target 'ACCEPT'

config rule
        option name 'Allow-IPSec-ESP'
        option src 'wan'
        option dest 'lan'
        option proto 'esp'
        option target 'ACCEPT'

config rule
        option name 'Allow-ISAKMP'
        option src 'wan'
        option dest 'lan'
        option dest_port '500'
        option proto 'udp'
        option target 'ACCEPT'

config include
        option path '/etc/firewall.user'

config include 'miniupnpd'
        option type 'script'
        option path '/usr/share/miniupnpd/firewall.include'
        option family 'any'
        option reload '1'

config zone
        option name 'slave'
        option forward 'REJECT'
        option output 'ACCEPT'
        option network 'slave'
        option input 'REJECT'

config forwarding
        option dest 'wan'
        option src 'slave'

config rule
        option target 'ACCEPT'
        option proto 'tcp udp'
        option dest_port '53'
        option name 'Slave dns'
        option src 'slave'

config rule
        option target 'ACCEPT'
        option proto 'udp'
        option dest_port '67-68'
        option name 'slave dhcp'
        option src 'slave'

config zone
        option name 'tor'
        option forward 'REJECT'
        option output 'ACCEPT'
        option network 'tor'
        option input 'ACCEPT'
        option syn_flood '1'
        option conntrack '1'

config forwarding
        option dest 'wan'
        option src 'tor'

config forwarding
        option src 'wan'
        option dest 'tor'

config rule
        option src 'tor'
        option proto 'udp'
        option dest_port '67'
        option target 'ACCEPT'

config rule
        option src 'tor'
        option proto 'tcp'
        option dest_port '9040'
        option target 'ACCEPT'

config rule
        option src 'tor'
        option proto 'udp'
        option dest_port '9053'
        option target 'ACCEPT'

config redirect
        option name 'Redirect-Tor-Traffic'
        option src 'tor'
        option src_dip '!10.1.1.1'
        option dest_port '9040'
        option proto 'tcp'
        option target 'DNAT'

config redirect
        option name 'Redirect-Tor-DNS'
        option src 'tor'
        option src_dport '53'
        option dest_port '9053'
        option proto 'udp'
        option target 'DNAT'

config rule
        option name 'Allow-LAN-OpenVPN'
        option src 'wan'
        option dest_port '1999'
        option proto 'tcp udp'
        option target 'ACCEPT'

config zone
        option name 'lanvpn'
        list network 'lanvpn'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'REJECT'

config rule
        option name 'Allow-SLAVE-OpenVPN'
        option src 'wan'
        option dest_port '1111'
        option proto 'tcp udp'
        option target 'ACCEPT'

config zone
        option name 'slavevpn'
        list network 'slavevpn'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'REJECT'

config rule
        option name 'Allow-tor-OpenVPN'
        option src 'wan'
        option dest_port '666'
        option proto 'tcp udp'
        option target 'ACCEPT'

config zone
        option name 'torvpn'
        list network 'torvpn'
        option input 'ACCEPT'
        option output 'ACCEPT'
        option forward 'REJECT'

config forwarding
        option dest 'wan'
        option src 'torvpn'

config forwarding
        option dest 'wan'
        option src 'slavevpn'

config forwarding
        option dest 'lan'
        option src 'lanvpn'

config forwarding
        option dest 'wan'
        option src 'lanvpn'

config forwarding
        option dest 'lanvpn'
        option src 'lan'