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rmoff

AirVPN connects but web browsing doesn't work (specific wifi network only)

By rmoff, ... in Troubleshooting and Problems

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rmoff    15

rmoff
Posted ...

On Mac OS X (10.8.2), AirVPN normally works absolutely fine for me.

However when I am connected on a particular public wifi (East Coast train service), AirVPN connects but web browsing doesn't work (pages never load - no error). I can ping and nslookup from the command line. If I disconnect airvpn, web browsing works fine again. I have tried restarting the browsers (chrome, firefox). 

On this particular wifi network services such as youtube etc are blocked, so is something they've configured blocked how the vpn is functioning? My (very basic) understanding was that once a "tunnel" was established (and it is, it says Connected) then what flowed through it was up to the client and the network over which is went couldn't interfere with the traffic?

 

 

2013-10-29 07:05:28 *Tunnelblick: OS X 10.8.2; Tunnelblick 3.3.0 (build 3518); prior version 3.3beta56 (build 3515)
2013-10-29 07:05:28 *Tunnelblick: Attempting connection with All using shadow copy; Set nameserver = 1; monitoring connection
2013-10-29 07:05:28 *Tunnelblick: openvpnstart start All.tblk 1338 1 0 1 0 305 -atADGNWradsgnw 
2013-10-29 07:05:28 OpenVPN 2.2.1 i386-apple-darwin10.8.0 [sSL] [LZO2] [PKCS11] [eurephia] built on Jul 22 2013
2013-10-29 07:05:28 MANAGEMENT: TCP Socket listening on 127.0.0.1:1338
2013-10-29 07:05:28 Need hold release from management interface, waiting...
2013-10-29 07:05:28 *Tunnelblick: openvpnstart starting OpenVPN:
[...]

2013-10-29 07:05:29 *Tunnelblick: Established communication with OpenVPN
2013-10-29 07:05:29 MANAGEMENT: Client connected from 127.0.0.1:1338
2013-10-29 07:05:29 MANAGEMENT: CMD 'pid'
2013-10-29 07:05:29 MANAGEMENT: CMD 'state on'
2013-10-29 07:05:29 MANAGEMENT: CMD 'state'
2013-10-29 07:05:29 MANAGEMENT: CMD 'bytecount 1'
2013-10-29 07:05:29 MANAGEMENT: CMD 'hold release'
2013-10-29 07:05:29 NOTE: the current --script-security setting may allow this configuration to call user-defined scripts
2013-10-29 07:05:29 LZO compression initialized
2013-10-29 07:05:29 Control Channel MTU parms [ L:1558 D:138 EF:38 EB:0 ET:0 EL:0 ]
2013-10-29 07:05:29 Socket Buffers: R=[196724->65536] S=[9216->65536]
2013-10-29 07:05:29 MANAGEMENT: >STATE:1383030329,RESOLVE,,,
2013-10-29 07:05:29 RESOLVE: NOTE: earth.airvpn.org resolves to 45 addresses
2013-10-29 07:05:29 Data Channel MTU parms [ L:1558 D:1450 EF:58 EB:135 ET:0 EL:0 AF:3/1 ]
2013-10-29 07:05:29 Local Options hash (VER=V4): '22188c5b'
2013-10-29 07:05:29 Expected Remote Options hash (VER=V4): 'a8f55717'
2013-10-29 07:05:29 UDPv4 link local: [undef]
2013-10-29 07:05:29 UDPv4 link remote: 119.81.1.125:443
2013-10-29 07:05:29 MANAGEMENT: >STATE:1383030329,WAIT,,,
2013-10-29 07:05:29 MANAGEMENT: >STATE:1383030329,AUTH,,,
2013-10-29 07:05:29 TLS: Initial packet from 119.81.1.125:443, sid=78a94441 ac8c2c10
2013-10-29 07:05:32 VERIFY OK: depth=1, /C=IT/ST=IT/L=Perugia/O=airvpn.org/CN=airvpn.org_CA/emailAddress=info@airvpn.org
2013-10-29 07:05:32 VERIFY OK: nsCertType=SERVER
2013-10-29 07:05:32 VERIFY OK: depth=0, /C=IT/ST=IT/L=Perugia/O=airvpn.org/CN=server/emailAddress=info@airvpn.org
2013-10-29 07:05:45 Data Channel Encrypt: Cipher 'AES-256-CBC' initialized with 256 bit key
2013-10-29 07:05:45 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
2013-10-29 07:05:45 Data Channel Decrypt: Cipher 'AES-256-CBC' initialized with 256 bit key
2013-10-29 07:05:45 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
2013-10-29 07:05:45 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA
2013-10-29 07:05:45 [server] Peer Connection Initiated with 119.81.1.125:443
2013-10-29 07:05:46 MANAGEMENT: >STATE:1383030346,GET_CONFIG,,,
2013-10-29 07:05:47 SENT CONTROL [server]: 'PUSH_REQUEST' (status=1)
2013-10-29 07:05:52 SENT CONTROL [server]: 'PUSH_REQUEST' (status=1)
2013-10-29 07:05:52 PUSH: Received control message: 'PUSH_REPLY,redirect-gateway def1,dhcp-option DNS 10.4.0.1,comp-lzo no,route 10.4.0.1,topology net30,ping 10,ping-restart 60,ifconfig 10.4.10.118 10.4.10.117'
2013-10-29 07:05:52 OPTIONS IMPORT: timers and/or timeouts modified
2013-10-29 07:05:52 OPTIONS IMPORT: LZO parms modified
2013-10-29 07:05:52 OPTIONS IMPORT: --ifconfig/up options modified
2013-10-29 07:05:52 OPTIONS IMPORT: route options modified
2013-10-29 07:05:52 OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified
2013-10-29 07:05:52 ROUTE default_gateway=10.101.0.1
2013-10-29 07:05:52 TUN/TAP device /dev/tun0 opened
2013-10-29 07:05:52 MANAGEMENT: >STATE:1383030352,ASSIGN_IP,,10.4.10.118,
2013-10-29 07:05:52 /sbin/ifconfig tun0 delete
                                        ifconfig: ioctl (SIOCDIFADDR): Can't assign requested address
2013-10-29 07:05:52 NOTE: Tried to delete pre-existing tun/tap instance -- No Problem if failure
2013-10-29 07:05:52 /sbin/ifconfig tun0 10.4.10.118 10.4.10.117 mtu 1500 netmask 255.255.255.255 up
2013-10-29 07:05:52 /Applications/Tunnelblick.app/Contents/Resources/client.up.tunnelblick.sh -m -w -d -f -atADGNWradsgnw tun0 1500 1558 10.4.10.118 10.4.10.117 init
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: Retrieved from OpenVPN: name server(s) [ 10.4.0.1 ], search domain(s) [ ] and SMB server(s) [ ] and using default domain name [ openvpn ]
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: MAN_DNS_CONFIG = <dictionary> { ServerAddresses : <array> { 185.19.105.6 8.8.8.8 } }
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: MAN_SMB_CONFIG = No such key
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: CUR_DNS_CONFIG = <dictionary> { ServerAddresses : <array> { 185.19.105.6 8.8.8.8 } }
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: CUR_SMB_CONFIG = No such key
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: DYN_DNS_DN = openvpn; DYN_DNS_SA = 10.4.0.1; DYN_DNS_SD =
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: DYN_SMB_NN = ; DYN_SMB_WG = ; DYN_SMB_WA =
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: MAN_DNS_DN = ; MAN_DNS_SA = 185.19.105.6 8.8.8.8; MAN_DNS_SD =
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: MAN_SMB_NN = ; MAN_SMB_WG = ; MAN_SMB_WA =
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: CUR_DNS_DN = ; CUR_DNS_SA = 185.19.105.6 8.8.8.8; CUR_DNS_SD =
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: CUR_SMB_NN = ; CUR_SMB_WG = ; CUR_SMB_WA =
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: ServerAddresses '10.4.0.1' ignored because ServerAddresses was set manually
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: Setting search domains to 'openvpn' because running under OS X 10.6 or higher and the search domains were not set manually and 'Prepend domain name to search domains' was not selected
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: FIN_DNS_DN = openvpn; FIN_DNS_SA = 185.19.105.6 8.8.8.8; FIN_DNS_SD = openvpn
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: FIN_SMB_NN = ; FIN_SMB_WG = ; FIN_SMB_WA =
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: OS X 10.8 or higher, so will modify DNS settings using Setup: in addition to State:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: SKP_DNS = ; SKP_DNS_SA = ; SKP_DNS_SD = ; SKP_DNS_DN =
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: SKP_SETUP_DNS =
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: SKP_SMB = #; SKP_SMB_NN = #; SKP_SMB_WG = #; SKP_SMB_WA = #
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: /etc/resolve = nameserver 185.19.105.6 nameserver 8.8.8.8
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: scutil --dns BEFORE CHANGES = DNS configuration resolver #1 nameserver[0] : 185.19.105.6 nameserver[1] : 8.8.8.8 reach : Reachable resolver #2 domain : local options : mdns timeout : 5 order : 300000 resolver #3 domain : 254.169.in-addr.arpa options : mdns timeout : 5 order : 300200 resolver #4 domain : 8.e.f.ip6.arpa options : mdns timeout : 5 order : 300400 resolver #5 domain : 9.e.f.ip6.arpa options : mdns timeout : 5 order : 300600 resolver #6 domain : a.e.f.ip6.arpa options : mdns timeout : 5 order : 300800 resolver #7 domain : b.e.f.ip6.arpa options : mdns timeout : 5 order : 301000 DNS configuration (for scoped queries) resolver #1 nameserver[0] : 185.19.105.6 nameserver[1] : 8.8.8.8 if_index : 4 (en1) flags : Scoped reach : Reachable
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: Configuration changes:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: ADD State: ServerAddresses 185.19.105.6 8.8.8.8
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: ADD State: SearchDomains openvpn
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: ADD State: DomainName openvpn
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: ADD Setup: ServerAddresses 185.19.105.6 8.8.8.8
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: ADD Setup: SearchDomains openvpn
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: ADD Setup: DomainName openvpn
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: ##ADD State: NetBIOSName
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: ##ADD State: Workgroup
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: ##ADD State: WINSAddresses
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:54 *Tunnelblick client.up.tunnelblick.sh: DEBUG: Pause for configuration changes to be propagated to State:/Network/Global/DNS and .../SMB
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: Configurations as read back after changes:
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: State:/.../DNS = <dictionary> { DomainName : openvpn SearchDomains : <array> { openvpn } ServerAddresses : <array> { 185.19.105.6 8.8.8.8 } }
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: State:/.../SMB = No such key
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: Setup:/.../DNS = <dictionary> { DomainName : openvpn SearchDomains : <array> { openvpn } ServerAddresses : <array> { 185.19.105.6 8.8.8.8 } }
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: Setup:/.../SMB = No such key
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: State:/Network/Global/DNS = <dictionary> { DomainName : openvpn SearchDomains : <array> { openvpn } ServerAddresses : <array> { 185.19.105.6 8.8.8.8 } }
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: State:/Network/Global/SMB = No such key
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: Expected by process-network-changes:
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: State:/Network/OpenVPN/DNS = <dictionary> { DomainName : openvpn SearchDomains : <array> { openvpn } ServerAddresses : <array> { 185.19.105.6 8.8.8.8 } }
2013-10-29 07:05:55 *Tunnelblick client.up.tunnelblick.sh: DEBUG: State:/Network/OpenVPN/SMB = <dictionary> { TunnelblickNoSuchKey : true }
2013-10-29 07:05:56 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:56 *Tunnelblick client.up.tunnelblick.sh: DEBUG: /etc/resolve = search openvpn nameserver 185.19.105.6 nameserver 8.8.8.8
2013-10-29 07:05:56 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:56 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:56 *Tunnelblick client.up.tunnelblick.sh: DEBUG: scutil --dns AFTER CHANGES = DNS configuration resolver #1 search domain[0] : openvpn nameserver[0] : 185.19.105.6 nameserver[1] : 8.8.8.8 reach : Reachable resolver #2 domain : local options : mdns timeout : 5 order : 300000 resolver #3 domain : 254.169.in-addr.arpa options : mdns timeout : 5 order : 300200 resolver #4 domain : 8.e.f.ip6.arpa options : mdns timeout : 5 order : 300400 resolver #5 domain : 9.e.f.ip6.arpa options : mdns timeout : 5 order : 300600 resolver #6 domain : a.e.f.ip6.arpa options : mdns timeout : 5 order : 300800 resolver #7 domain : b.e.f.ip6.arpa options : mdns timeout : 5 order : 301000 DNS configuration (for scoped queries) resolver #1 search domain[0] : openvpn nameserver[0] : 185.19.105.6 nameserver[1] : 8.8.8.8 if_index : 4 (en1) flags : Scoped reach : Reachable
2013-10-29 07:05:56 *Tunnelblick client.up.tunnelblick.sh: DEBUG:
2013-10-29 07:05:56 *Tunnelblick client.up.tunnelblick.sh: Saved the DNS and SMB configurations for later use
2013-10-29 07:05:56 *Tunnelblick client.up.tunnelblick.sh: Flushed the DNS Cache
2013-10-29 07:05:56 *Tunnelblick client.up.tunnelblick.sh: Set up to monitor system configuration with leasewatch
2013-10-29 07:05:56 *Tunnelblick: No 'connected.sh' script to execute
2013-10-29 07:05:56 /sbin/route add -net 119.81.1.125 10.101.0.1 255.255.255.255
                                        add net 119.81.1.125: gateway 10.101.0.1
2013-10-29 07:05:56 /sbin/route add -net 0.0.0.0 10.4.10.117 128.0.0.0
                                        add net 0.0.0.0: gateway 10.4.10.117
2013-10-29 07:05:56 /sbin/route add -net 128.0.0.0 10.4.10.117 128.0.0.0
                                        add net 128.0.0.0: gateway 10.4.10.117
2013-10-29 07:05:56 MANAGEMENT: >STATE:1383030356,ADD_ROUTES,,,
2013-10-29 07:05:56 /sbin/route add -net 10.4.0.1 10.4.10.117 255.255.255.255
                                        add net 10.4.0.1: gateway 10.4.10.117
2013-10-29 07:05:56 Initialization Sequence Completed
2013-10-29 07:05:56 MANAGEMENT: >STATE:1383030356,CONNECTED,SUCCESS,10.4.10.118,119.81.1.125
2013-10-29 07:06:01 *Tunnelblick leasewatch: A system configuration change was ignored because it was not relevant
2013-10-29 07:07:53 *Tunnelblick: Disconnecting; Disconnect button pressed
2013-10-29 07:07:53 *Tunnelblick: Disconnecting using 'killall'
2013-10-29 07:07:53 event_wait : Interrupted system call (code=4)
2013-10-29 07:07:53 SIGTERM received, sending exit notification to peer
2013-10-29 07:07:58 TCP/UDP: Closing socket
2013-10-29 07:07:58 /sbin/route delete -net 10.4.0.1 10.4.10.117 255.255.255.255
                                        delete net 10.4.0.1: gateway 10.4.10.117
2013-10-29 07:07:58 /sbin/route delete -net 119.81.1.125 10.101.0.1 255.255.255.255
                                        delete net 119.81.1.125: gateway 10.101.0.1
2013-10-29 07:07:58 /sbin/route delete -net 0.0.0.0 10.4.10.117 128.0.0.0
                                        delete net 0.0.0.0: gateway 10.4.10.117
2013-10-29 07:07:58 /sbin/route delete -net 128.0.0.0 10.4.10.117 128.0.0.0
                                        delete net 128.0.0.0: gateway 10.4.10.117
2013-10-29 07:07:58 Closing TUN/TAP interface
2013-10-29 07:07:58 /Applications/Tunnelblick.app/Contents/Resources/client.down.tunnelblick.sh -m -w -d -f -atADGNWradsgnw tun0 1500 1558 10.4.10.118 10.4.10.117 init
                                          No such key
2013-10-29 07:07:58 SIGTERM[soft,exit-with-notification] received, process exiting
2013-10-29 07:07:58 MANAGEMENT: >STATE:1383030478,EXITING,exit-with-notification,,
2013-10-29 07:07:58 *Tunnelblick client.down.tunnelblick.sh: Cancelled monitoring of system configuration changes
2013-10-29 07:07:58 *Tunnelblick client.down.tunnelblick.sh: DEBUG: Restoring 'Setup:' DNS key
2013-10-29 07:07:58 *Tunnelblick client.down.tunnelblick.sh: Restored the DNS and SMB configurations
2013-10-29 07:07:58 *Tunnelblick client.down.tunnelblick.sh: DEBUG:
2013-10-29 07:07:58 *Tunnelblick client.down.tunnelblick.sh: DEBUG: /etc/resolve = nameserver 185.19.105.6 nameserver 8.8.8.8
2013-10-29 07:07:58 *Tunnelblick client.down.tunnelblick.sh: DEBUG:
2013-10-29 07:07:58 *Tunnelblick client.down.tunnelblick.sh: DEBUG: scutil --dns = DNS configuration resolver #1 nameserver[0] : 185.19.105.6 nameserver[1] : 8.8.8.8 reach : Reachable resolver #2 domain : local options : mdns timeout : 5 order : 300000 resolver #3 domain : 254.169.in-addr.arpa options : mdns timeout : 5 order : 300200 resolver #4 domain : 8.e.f.ip6.arpa options : mdns timeout : 5 order : 300400 resolver #5 domain : 9.e.f.ip6.arpa options : mdns timeout : 5 order : 300600 resolver #6 domain : a.e.f.ip6.arpa options : mdns timeout : 5 order : 300800 resolver #7 domain : b.e.f.ip6.arpa options : mdns timeout : 5 order : 301000 DNS configuration (for scoped queries) resolver #1 nameserver[0] : 185.19.105.6 nameserver[1] : 8.8.8.8 if_index : 4 (en1) flags : Scoped reach : Reachable
2013-10-29 07:07:58 *Tunnelblick client.down.tunnelblick.sh: DEBUG:
2013-10-29 07:07:58 *Tunnelblick client.down.tunnelblick.sh: Flushed the DNS Cache
2013-10-29 07:07:58 *Tunnelblick: No 'post-disconnect.sh' script to execute
 

 

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Staff    9973

Staff
Posted ...

Hello!

 

Of course, once the tunnel is established the provider can't selectively discern traffic. Either it blocks everything (disrupting OpenVPN connection) or nothing.

 

If your system resolves correctly names (with nslookup, ping etc.) the problem is in the browser. What happens if you type an IP address directly on the browser bar, for example https://95.211.138.143 (it's airvpn.org main frontend IP address). You should get a certificate warning because the browser expects "airvpn.org" according to the certificate. If you get no connection at all, then it's not that your browser is unable to resolve names, it's probably something that blocks browsers packets INSIDE your system.

 

Can you confirm that, while connected to the VPN, commands such as "ping google.com", "traceroute airvpn.org" are successful?

 

Also, can you please check that the system can reach 10.4.0.1? "ping 10.4.0.1"

 

FInally, according to your description chances are that this provider filters UDP packets. Try a connection in TCP mode to 80 and 443, and in UDP mode to the DNS queries outbound port (test ports 80 TCP and 443 TCP, but also 53 UDP).

 

Kind regards

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