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RBR850 OpenVPN After Factory Reset
I've had my setup of an RBR850 & 2 RBS750 satellites for a few years now. Have mostly worked great. I also have OpenVPN using DDNS working just fine so I could occasionally connect from my iPhone to ...
Thanks for your participation in this thread. So, I did some review this morning and finally got it to work.
I ended up turning off UPNP (since I have a couple of port forwards set) and, turned off DMZ for a particular IP address.And poof - it started working. Surprising to me, because neither of the VPN UDP ports were included in any of the above - unless the DMZ caused the conflict?
I'm pretty sure I turned UPNP off and tested it previously - but, maybe I didn't give it enough time. Who knows. Happy its working now though and I'm making notes & a backup for future reference.
It is annoying that Netgear provides no diagnostic information on the router for OpenVPN.
I connected from an Android phone just now and found that the log file on the OpenVPN Connect client includes a LOT of steps:
[Jul 29, 2025, 14:02:11] EVENT: CANCELLED
[Jul 29, 2025, 14:02:11] EVENT: DISCONNECTED
[Jul 29, 2025, 14:02:11] Tunnel bytes per CPU second: 0
[Jul 29, 2025, 14:02:11] ----- OpenVPN Stop -----
[Jul 29, 2025, 14:02:11] EVENT: CORE_THREAD_DONE
[Jul 29, 2025, 14:03:57] ----- OpenVPN Start -----
[Jul 29, 2025, 14:03:57] EVENT: CORE_THREAD_ACTIVE
[Jul 29, 2025, 14:03:57] OpenVPN core 3.11.1(3.git::fbda4753:RelWithDebInfo) android arm64 64-bit PT_PROXY
[Jul 29, 2025, 14:03:57] Frame=512/2112/512 mssfix-ctrl=1250
[Jul 29, 2025, 14:03:57] NOTE: This configuration contains options that were not used:
[Jul 29, 2025, 14:03:57] Unsupported option (ignored)
[Jul 29, 2025, 14:03:57] 0 [resolv-retry] [infinite]
[Jul 29, 2025, 14:03:57] 1 [persist-key]
[Jul 29, 2025, 14:03:57] 2 [persist-tun]
[Jul 29, 2025, 14:03:57] EVENT: RESOLVE
[Jul 29, 2025, 14:03:57] Contacting 172.249.112.236:12973 via UDP
[Jul 29, 2025, 14:03:57] EVENT: WAIT
[Jul 29, 2025, 14:03:57] Connecting to [bednarhouse.mynetgear.com]:12973 (172.249.112.236) via UDP
[Jul 29, 2025, 14:03:57] EVENT: CONNECTING
[Jul 29, 2025, 14:03:57] Tunnel Options:V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,cipher AES-128-CBC,auth SHA1,keysize 128,key-method 2,tls-client
[Jul 29, 2025, 14:03:57] Creds: UsernameEmpty/PasswordEmpty
[Jul 29, 2025, 14:03:57] Sending Peer Info:
IV_VER=3.11.1
IV_PLAT=android
IV_NCP=2
IV_TCPNL=1
IV_PROTO=8094
IV_MTU=1600
IV_CIPHERS=AES-128-CBC:AES-192-CBC:AES-256-CBC:AES-128-GCM:AES-192-GCM:AES-256-GCM:CHACHA20-POLY1305
IV_LZO=1
IV_AUTO_SESS=1
IV_GUI_VER=net.openvpn.connect.android_3.7.1-10568
IV_SSO=webauth,crtext
[Jul 29, 2025, 14:03:57] SSL Handshake: peer certificate: CN=server, 1024 bit RSA, cipher: ECDHE-RSA-AES256-GCM-SHA384 TLSv1.2 Kx=ECDH Au=RSA Enc=AESGCM(256) Mac=AEAD
[Jul 29, 2025, 14:03:57] Session is ACTIVE
[Jul 29, 2025, 14:03:57] Sending PUSH_REQUEST to server...
[Jul 29, 2025, 14:03:57] EVENT: GET_CONFIG
[Jul 29, 2025, 14:03:57] OPTIONS:
0 [dhcp-option] [DNS] [192.168.1.1]
1 [route-gateway] [192.168.2.1]
2 [topology] [subnet]
3 [ping] [10]
4 [ping-restart] [120]
5 [redirect-gateway] [def1]
6 [ifconfig] [192.168.2.2] [255.255.255.0]
7 [peer-id] [0]
8 [cipher] [AES-256-GCM]
9 [block-ipv6]
10 [block-ipv4]
[Jul 29, 2025, 14:03:57] PROTOCOL OPTIONS:
key-derivation: OpenVPN PRF
compress: LZO
data channel: cipher AES-256-GCM, peer-id 0
[Jul 29, 2025, 14:03:57] EVENT: ASSIGN_IP
[Jul 29, 2025, 14:03:57] Connected via tun
[Jul 29, 2025, 14:03:57] LZO-ASYM init swap=0 asym=1
[Jul 29, 2025, 14:03:57] EVENT: CONNECTED info='xxxxxx.mynetgear.com:12973 (xxx.249.112.236) via /UDP on tun/192.168.2.2/ gw=[192.168.2.1/] mtu=(default)' trans=TO_CONNECTED
[Jul 29, 2025, 14:03:57] EVENT: COMPRESSION_ENABLED info='Asymmetric compression enabled. Server may send compressed data. This may be a potential security issue.' trans=TO_DISCONNECTED