Hi everyone, I have attempted to set up an openvpn server on OpenWrt 18.06.2 using this tutorial https://openwrt.org/docs/guide-user/services/vpn/openvpn/basic, I see an incoming connection when I do a tcpdump on the port when I try to connect from inside my network but I cannot establish the connection with openvpn.
It would be amazing if someone could point me in the right direction!
root@OpenWrt:~# uci show network; uci show firewall; uci show openvpn
network.loopback=interface
network.loopback.ifname='lo'
network.loopback.proto='static'
network.loopback.ipaddr='127.0.0.1'
network.loopback.netmask='255.0.0.0'
network.globals=globals
network.globals.ula_prefix='fdf6:82d5:513d::/48'
network.lan=interface
network.lan.type='bridge'
network.lan.ifname='eth1.1'
network.lan.proto='static'
network.lan.ipaddr='192.168.1.1'
network.lan.netmask='255.255.255.0'
network.lan.ip6assign='60'
network.wan=interface
network.wan.ifname='eth0.2'
network.wan.proto='dhcp'
network.@switch[0]=switch
network.@switch[0].name='switch0'
network.@switch[0].reset='1'
network.@switch[0].enable_vlan='1'
network.@switch_vlan[0]=switch_vlan
network.@switch_vlan[0].device='switch0'
network.@switch_vlan[0].vlan='1'
network.@switch_vlan[0].ports='2 3 4 5 0t'
network.@switch_vlan[1]=switch_vlan
network.@switch_vlan[1].device='switch0'
network.@switch_vlan[1].vlan='2'
network.@switch_vlan[1].ports='1 6t'
network.vpnserver=interface
network.vpnserver.ifname='tun0'
network.vpnserver.proto='none'
firewall.@defaults[0]=defaults
firewall.@defaults[0].syn_flood='1'
firewall.@defaults[0].input='ACCEPT'
firewall.@defaults[0].output='ACCEPT'
firewall.@defaults[0].forward='REJECT'
firewall.@zone[0]=zone
firewall.@zone[0].name='lan'
firewall.@zone[0].network='lan'
firewall.@zone[0].input='ACCEPT'
firewall.@zone[0].output='ACCEPT'
firewall.@zone[0].forward='ACCEPT'
firewall.@zone[1]=zone
firewall.@zone[1].name='wan'
firewall.@zone[1].network='wan' 'wan6'
firewall.@zone[1].input='REJECT'
firewall.@zone[1].output='ACCEPT'
firewall.@zone[1].forward='REJECT'
firewall.@zone[1].masq='1'
firewall.@zone[1].mtu_fix='1'
firewall.@forwarding[0]=forwarding
firewall.@forwarding[0].src='lan'
firewall.@forwarding[0].dest='wan'
firewall.@rule[0]=rule
firewall.@rule[0].name='Allow-DHCP-Renew'
firewall.@rule[0].src='wan'
firewall.@rule[0].proto='udp'
firewall.@rule[0].dest_port='68'
firewall.@rule[0].target='ACCEPT'
firewall.@rule[0].family='ipv4'
firewall.@rule[1]=rule
firewall.@rule[1].name='Allow-Ping'
firewall.@rule[1].src='wan'
firewall.@rule[1].proto='icmp'
firewall.@rule[1].icmp_type='echo-request'
firewall.@rule[1].family='ipv4'
firewall.@rule[1].target='ACCEPT'
firewall.@rule[2]=rule
firewall.@rule[2].name='Allow-IGMP'
firewall.@rule[2].src='wan'
firewall.@rule[2].proto='igmp'
firewall.@rule[2].family='ipv4'
firewall.@rule[2].target='ACCEPT'
firewall.@rule[3]=rule
firewall.@rule[3].name='Allow-DHCPv6'
firewall.@rule[3].src='wan'
firewall.@rule[3].proto='udp'
firewall.@rule[3].src_ip='fc00::/6'
firewall.@rule[3].dest_ip='fc00::/6'
firewall.@rule[3].dest_port='546'
firewall.@rule[3].family='ipv6'
firewall.@rule[3].target='ACCEPT'
firewall.@rule[4]=rule
firewall.@rule[4].name='Allow-MLD'
firewall.@rule[4].src='wan'
firewall.@rule[4].proto='icmp'
firewall.@rule[4].src_ip='fe80::/10'
firewall.@rule[4].icmp_type='130/0' '131/0' '132/0' '143/0'
firewall.@rule[4].family='ipv6'
firewall.@rule[4].target='ACCEPT'
firewall.@rule[5]=rule
firewall.@rule[5].name='Allow-ICMPv6-Input'
firewall.@rule[5].src='wan'
firewall.@rule[5].proto='icmp'
firewall.@rule[5].icmp_type='echo-request' 'echo-reply' 'destination-unreachable' 'packet-too-big' 'time-exceeded' 'bad-header' 'unknown-header-type' 'router-solicitation' 'neighbour-solicitation' 'router-advertisement' 'neighbour-advertisement'
firewall.@rule[5].limit='1000/sec'
firewall.@rule[5].family='ipv6'
firewall.@rule[5].target='ACCEPT'
firewall.@rule[6]=rule
firewall.@rule[6].name='Allow-ICMPv6-Forward'
firewall.@rule[6].src='wan'
firewall.@rule[6].dest='*'
firewall.@rule[6].proto='icmp'
firewall.@rule[6].icmp_type='echo-request' 'echo-reply' 'destination-unreachable' 'packet-too-big' 'time-exceeded' 'bad-header' 'unknown-header-type'
firewall.@rule[6].limit='1000/sec'
firewall.@rule[6].family='ipv6'
firewall.@rule[6].target='ACCEPT'
firewall.@rule[7]=rule
firewall.@rule[7].name='Allow-IPSec-ESP'
firewall.@rule[7].src='wan'
firewall.@rule[7].dest='lan'
firewall.@rule[7].proto='esp'
firewall.@rule[7].target='ACCEPT'
firewall.@rule[8]=rule
firewall.@rule[8].name='Allow-ISAKMP'
firewall.@rule[8].src='wan'
firewall.@rule[8].dest='lan'
firewall.@rule[8].dest_port='500'
firewall.@rule[8].proto='udp'
firewall.@rule[8].target='ACCEPT'
firewall.@include[0]=include
firewall.@include[0].path='/etc/firewall.user'
firewall.@rule[9]=rule
firewall.@rule[9].name='Allow-OpenVPN'
firewall.@rule[9].proto='tcp udp'
firewall.@rule[9].target='ACCEPT'
firewall.@rule[9].dest_port='1194'
firewall.@rule[9].src='wan'
firewall.@zone[2]=zone
firewall.@zone[2].name='vpnserver'
firewall.@zone[2].network='vpnserver'
firewall.@zone[2].input='ACCEPT'
firewall.@zone[2].output='ACCEPT'
firewall.@zone[2].forward='REJECT'
firewall.@forwarding[1]=forwarding
firewall.@forwarding[1].dest='lan'
firewall.@forwarding[1].src='vpnserver'
firewall.@forwarding[2]=forwarding
firewall.@forwarding[2].dest='wan'
firewall.@forwarding[2].src='vpnserver'
openvpn.custom_config=openvpn
openvpn.custom_config.enabled='0'
openvpn.custom_config.config='/etc/openvpn/my-vpn.conf'
openvpn.sample_server=openvpn
openvpn.sample_server.enabled='0'
openvpn.sample_server.port='1194'
openvpn.sample_server.proto='udp'
openvpn.sample_server.dev='tun'
openvpn.sample_server.ca='/etc/openvpn/ca.crt'
openvpn.sample_server.cert='/etc/openvpn/server.crt'
openvpn.sample_server.key='/etc/openvpn/server.key'
openvpn.sample_server.dh='/etc/openvpn/dh1024.pem'
openvpn.sample_server.server='10.8.0.0 255.255.255.0'
openvpn.sample_server.ifconfig_pool_persist='/tmp/ipp.txt'
openvpn.sample_server.keepalive='10 120'
openvpn.sample_server.compress='lzo'
openvpn.sample_server.persist_key='1'
openvpn.sample_server.persist_tun='1'
openvpn.sample_server.user='nobody'
openvpn.sample_server.status='/tmp/openvpn-status.log'
openvpn.sample_server.verb='3'
openvpn.sample_client=openvpn
openvpn.sample_client.enabled='0'
openvpn.sample_client.client='1'
openvpn.sample_client.dev='tun'
openvpn.sample_client.proto='udp'
openvpn.sample_client.remote='my_server_1 1194'
openvpn.sample_client.resolv_retry='infinite'
openvpn.sample_client.nobind='1'
openvpn.sample_client.persist_key='1'
openvpn.sample_client.persist_tun='1'
openvpn.sample_client.user='nobody'
openvpn.sample_client.ca='/etc/openvpn/ca.crt'
openvpn.sample_client.cert='/etc/openvpn/client.crt'
openvpn.sample_client.key='/etc/openvpn/client.key'
openvpn.sample_client.compress='lzo'
openvpn.sample_client.verb='3'
openvpn.vpnserver=openvpn
openvpn.vpnserver.enabled='1'
openvpn.vpnserver.dev='tun0'
openvpn.vpnserver.topology='subnet'
openvpn.vpnserver.client_to_client='1'
openvpn.vpnserver.compress='lzo'
openvpn.vpnserver.keepalive='10 120'
openvpn.vpnserver.persist_tun='1'
openvpn.vpnserver.persist_key='1'
openvpn.vpnserver.dh='/etc/openvpn/dh.pem'
openvpn.vpnserver.tls_crypt='/etc/openvpn/tc.pem'
openvpn.vpnserver.ca='/etc/openvpn/ca.crt'
openvpn.vpnserver.cert='/etc/openvpn/vpnserver.crt'
openvpn.vpnserver.key='/etc/openvpn/vpnserver.key'
openvpn.vpnserver.push='redirect-gateway def1' 'route 192.168.1.0 255.255.255.0' 'dhcp-option DNS 192.168.1.1' 'compress lzo' 'persist-tun' 'persist-key' 'dhcp-option DOMAIN lan'
openvpn.vpnserver.port='1194'
openvpn.vpnserver.verb='7'
openvpn.vpnserver.server='192.168.8.0 255.255.255.0'
logread -e openvpn:
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: OpenVPN 2.4.5 mips-openwrt-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [MH/PKTINFO] [AEAD]
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: library versions: OpenSSL 1.0.2q 20 Nov 2018, LZO 2.10
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: Diffie-Hellman initialized with 2048 bit key
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: Outgoing Control Channel Encryption: Cipher 'AES-256-CTR' initialized with 256 bit key
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: Outgoing Control Channel Encryption: Using 256 bit message hash 'SHA256' for HMAC authentication
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: Incoming Control Channel Encryption: Cipher 'AES-256-CTR' initialized with 256 bit key
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: Incoming Control Channel Encryption: Using 256 bit message hash 'SHA256' for HMAC authentication
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: tls_crypt_adjust_frame_parameters: Adjusting frame parameters for tls-crypt by 56 bytes
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: TLS-Auth MTU parms [ L:1622 D:1156 EF:94 EB:0 ET:0 EL:3 ]
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: TUN/TAP device tun0 opened
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: TUN/TAP TX queue length set to 100
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: do_ifconfig, tt->did_ifconfig_ipv6_setup=0
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: /sbin/ifconfig tun0 192.168.8.1 netmask 255.255.255.0 mtu 1500 broadcast 192.168.8.255
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: Data Channel MTU parms [ L:1622 D:1450 EF:122 EB:406 ET:0 EL:3 ]
Sun Feb 3 01:03:10 2019 daemon.warn openvpn(vpnserver)[14822]: Could not determine IPv4/IPv6 protocol. Using AF_INET
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: Socket Buffers: R=[163840->163840] S=[163840->163840]
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: UDPv4 link local (bound): [AF_INET][undef]:1194
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: UDPv4 link remote: [AF_UNSPEC]
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: MULTI: multi_init called, r=256 v=256
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: IFCONFIG POOL: base=192.168.8.2 size=252, ipv6=0
Sun Feb 3 01:03:10 2019 daemon.notice openvpn(vpnserver)[14822]: Initialization Sequence Completed
vpnclient.ovpn
verb 7
nobind
dev tun
client
remote [ip removed] 1194 tcp
fast-io
compress lzo
auth-nocache
remote-cert-tls server
<tls-crypt>
-----BEGIN OpenVPN Static key V1-----
...
-----END OpenVPN Static key V1-----
</tls-crypt>
<ca>
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
</ca>
<cert>
-----BEGIN CERTIFICATE-----
...
-----END CERTIFICATE-----
</cert>
<key>
-----BEGIN ENCRYPTED PRIVATE KEY-----
...
-----END ENCRYPTED PRIVATE KEY-----
</key>
Client log:
[first part removed]
Sun Feb 03 01:21:57 2019 us=295899 Data Channel MTU parms [ L:1624 D:1450 EF:124 EB:406 ET:0 EL:3 ]
Sun Feb 03 01:21:57 2019 us=295899 crypto_adjust_frame_parameters: Adjusting frame parameters for crypto by 40 bytes
Sun Feb 03 01:21:57 2019 us=295899 calc_options_string_link_mtu: link-mtu 1624 -> 1544
Sun Feb 03 01:21:57 2019 us=295899 crypto_adjust_frame_parameters: Adjusting frame parameters for crypto by 40 bytes
Sun Feb 03 01:21:57 2019 us=295899 calc_options_string_link_mtu: link-mtu 1624 -> 1544
Sun Feb 03 01:21:57 2019 us=295899 Local Options String (VER=V4): 'V4,dev-type tun,link-mtu 1544,tun-mtu 1500,proto TCPv4_CLIENT,comp-lzo,cipher BF-CBC,auth SHA1,keysize 128,key-method 2,tls-client'
Sun Feb 03 01:21:57 2019 us=295899 Expected Remote Options String (VER=V4): 'V4,dev-type tun,link-mtu 1544,tun-mtu 1500,proto TCPv4_SERVER,comp-lzo,cipher BF-CBC,auth SHA1,keysize 128,key-method 2,tls-server'
Sun Feb 03 01:21:57 2019 us=295899 TCP/UDP: Preserving recently used remote address: [AF_INET][ip adress removed]:1194
Sun Feb 03 01:21:57 2019 us=295899 Socket Buffers: R=[65536->65536] S=[65536->65536]
Sun Feb 03 01:21:57 2019 us=295899 Attempting to establish TCP connection with [AF_INET][ip adress removed]:1194 [nonblock]
Sun Feb 03 01:21:57 2019 us=295899 MANAGEMENT: >STATE:1549174917,TCP_CONNECT,,,,,,
Sun Feb 03 01:22:03 2019 us=298848 PID packet_id_free
Sun Feb 03 01:22:03 2019 us=298848 PID packet_id_free
Sun Feb 03 01:22:03 2019 us=298848 PID packet_id_free
Sun Feb 03 01:22:03 2019 us=298848 PID packet_id_free
Sun Feb 03 01:22:03 2019 us=298848 PID packet_id_free
Sun Feb 03 01:22:03 2019 us=298848 PID packet_id_free
Sun Feb 03 01:22:03 2019 us=298848 PID packet_id_free
Sun Feb 03 01:22:03 2019 us=298848 PID packet_id_free
Sun Feb 03 01:22:03 2019 us=298848 TCP/UDP: Closing socket
Sun Feb 03 01:22:03 2019 us=298848 PID packet_id_free
Sun Feb 03 01:22:03 2019 us=298848 SIGTERM[hard,init_instance] received, process exiting
Sun Feb 03 01:22:03 2019 us=298848 MANAGEMENT: >STATE:1549174923,EXITING,init_instance,,,,,
Sun Feb 03 01:22:03 2019 us=298848 PKCS#11: Terminating openssl
Sun Feb 03 01:22:03 2019 us=298848 PKCS#11: Removing providers
Sun Feb 03 01:22:03 2019 us=298848 PKCS#11: Releasing sessions
Sun Feb 03 01:22:03 2019 us=298848 PKCS#11: Terminating slotevent
Sun Feb 03 01:22:03 2019 us=298848 PKCS#11: Marking as uninitialized