I set up an OpenVPN server a few months ago, everything worked fine. Today, I tried to create a few news users. The connexion is sucessful but I can not do anything. No ping, no remote desktop, ...
I also tried to completely disable the firewalls from both sides but it did not affect the resutl.
I use windows as client and server
Server.log
Mon Dec 21 14:11:59 2015 81.240.206.68:51145 TLS: Initial packet from [AF_INET]81.240.206.68:51145, sid=27f49537 c22b04f5
Mon Dec 21 14:11:59 2015 81.240.206.68:51145 VERIFY OK: depth=1, C=BE, ST=BW, L=Louvain-La-Neuve, O=vpn.3dside, OU=IT, CN=3dside_server, name=3dside_server, emailAddress=info@3dside.eu
Mon Dec 21 14:11:59 2015 81.240.206.68:51145 VERIFY OK: depth=0, C=BE, ST=BW, L=Louvain-La-Neuve, O=vpn.3dside, OU=Backup, CN=3dside_synology, name=3dside_synology, emailAddress=ed@3dside.eu
Mon Dec 21 14:11:59 2015 81.240.206.68:51145 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
Mon Dec 21 14:11:59 2015 81.240.206.68:51145 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Dec 21 14:11:59 2015 81.240.206.68:51145 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
Mon Dec 21 14:11:59 2015 81.240.206.68:51145 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Dec 21 14:11:59 2015 81.240.206.68:51145 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA
Mon Dec 21 14:11:59 2015 81.240.206.68:51145 [3dside_synology] Peer Connection Initiated with [AF_INET]81.240.206.68:51145
Mon Dec 21 14:11:59 2015 3dside_synology/81.240.206.68:51145 MULTI_sva: pool returned IPv4=10.9.8.30, IPv6=(Not enabled)
Mon Dec 21 14:11:59 2015 3dside_synology/81.240.206.68:51145 MULTI: Learn: 10.9.8.30 -> 3dside_synology/81.240.206.68:51145
Mon Dec 21 14:11:59 2015 3dside_synology/81.240.206.68:51145 MULTI: primary virtual IP for 3dside_synology/81.240.206.68:51145: 10.9.8.30
Mon Dec 21 14:12:02 2015 3dside_synology/81.240.206.68:51145 PUSH: Received control message: 'PUSH_REQUEST'
Mon Dec 21 14:12:02 2015 3dside_synology/81.240.206.68:51145 send_push_reply(): safe_cap=940
Mon Dec 21 14:12:02 2015 3dside_synology/81.240.206.68:51145 SENT CONTROL [3dside_synology]: 'PUSH_REPLY,route 10.9.8.1,topology net30,ping 10,ping-restart 120,ifconfig 10.9.8.30 10.9.8.29' (status=1)
Client.log
Mon Dec 21 14:09:12 2015 OpenVPN 2.3.2 x86_64-w64-mingw32 [SSL (OpenSSL)] [LZO] [PKCS11] [eurephia] [IPv6] built on Aug 22 2013
Mon Dec 21 14:09:12 2015 MANAGEMENT: TCP Socket listening on [AF_INET]127.0.0.1:25340
Mon Dec 21 14:09:12 2015 Need hold release from management interface, waiting...
Mon Dec 21 14:09:13 2015 MANAGEMENT: Client connected from [AF_INET]127.0.0.1:25340
Mon Dec 21 14:09:13 2015 MANAGEMENT: CMD 'state on'
Mon Dec 21 14:09:13 2015 MANAGEMENT: CMD 'log all on'
Mon Dec 21 14:09:13 2015 MANAGEMENT: CMD 'hold off'
Mon Dec 21 14:09:13 2015 MANAGEMENT: CMD 'hold release'
Mon Dec 21 14:09:27 2015 MANAGEMENT: CMD 'username "Auth" "3dside_synology"'
Mon Dec 21 14:09:27 2015 MANAGEMENT: CMD 'password [...]'
Mon Dec 21 14:09:27 2015 Socket Buffers: R=[65536->65536] S=[65536->65536]
Mon Dec 21 14:09:27 2015 MANAGEMENT: >STATE:1450703367,RESOLVE,,,
Mon Dec 21 14:09:27 2015 UDPv4 link local: [undef]
Mon Dec 21 14:09:27 2015 UDPv4 link remote: [AF_INET]81.240.206.68:1194
Mon Dec 21 14:09:27 2015 MANAGEMENT: >STATE:1450703367,WAIT,,,
Mon Dec 21 14:09:27 2015 MANAGEMENT: >STATE:1450703367,AUTH,,,
Mon Dec 21 14:09:27 2015 TLS: Initial packet from [AF_INET]81.240.206.68:1194, sid=788a4140 d00c6b01
Mon Dec 21 14:09:27 2015 VERIFY OK: depth=1, C=BE, ST=BW, L=Louvain-La-Neuve, O=vpn.3dside, OU=IT, CN=3dside_server, name=3dside_server, emailAddress=info@3dside.eu
Mon Dec 21 14:09:27 2015 Validating certificate key usage
Mon Dec 21 14:09:27 2015 ++ Certificate has key usage 00a0, expects 00a0
Mon Dec 21 14:09:27 2015 VERIFY KU OK
Mon Dec 21 14:09:27 2015 Validating certificate extended key usage
Mon Dec 21 14:09:27 2015 ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
Mon Dec 21 14:09:27 2015 VERIFY EKU OK
Mon Dec 21 14:09:27 2015 VERIFY OK: depth=0, C=BE, ST=BW, L=Louvain-La-Neuve, O=vpn.3dside, OU=IT, CN=3dside_server, name=3dside_server, emailAddress=info@3dside.eu
Mon Dec 21 14:09:27 2015 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key
Mon Dec 21 14:09:27 2015 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Dec 21 14:09:27 2015 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key
Mon Dec 21 14:09:27 2015 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Dec 21 14:09:27 2015 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 1024 bit RSA
Mon Dec 21 14:09:27 2015 [3dside_server] Peer Connection Initiated with [AF_INET]81.240.206.68:1194
Mon Dec 21 14:09:28 2015 MANAGEMENT: >STATE:1450703368,GET_CONFIG,,,
Mon Dec 21 14:09:29 2015 SENT CONTROL [3dside_server]: 'PUSH_REQUEST' (status=1)
Mon Dec 21 14:09:29 2015 PUSH: Received control message: 'PUSH_REPLY,route 10.9.8.1,topology net30,ping 10,ping-restart 120,ifconfig 10.9.8.30 10.9.8.29'
Mon Dec 21 14:09:29 2015 OPTIONS IMPORT: timers and/or timeouts modified
Mon Dec 21 14:09:29 2015 OPTIONS IMPORT: --ifconfig/up options modified
Mon Dec 21 14:09:29 2015 OPTIONS IMPORT: route options modified
Mon Dec 21 14:09:29 2015 do_ifconfig, tt->ipv6=0, tt->did_ifconfig_ipv6_setup=0
Mon Dec 21 14:09:29 2015 MANAGEMENT: >STATE:1450703369,ASSIGN_IP,,10.9.8.30,
Mon Dec 21 14:09:29 2015 open_tun, tt->ipv6=0
Mon Dec 21 14:09:29 2015 TAP-WIN32 device [Connexion au réseau local] opened: \\.\Global\{81C9CB40-E565-4401-A3C7-2339D021E1C6}.tap
Mon Dec 21 14:09:29 2015 TAP-Windows Driver Version 9.9
Mon Dec 21 14:09:29 2015 Notified TAP-Windows driver to set a DHCP IP/netmask of 10.9.8.30/255.255.255.252 on interface {81C9CB40-E565-4401-A3C7-2339D021E1C6} [DHCP-serv: 10.9.8.29, lease-time: 31536000]
Mon Dec 21 14:09:29 2015 Successful ARP Flush on interface [7] {81C9CB40-E565-4401-A3C7-2339D021E1C6}
Mon Dec 21 14:09:34 2015 TEST ROUTES: 1/1 succeeded len=1 ret=1 a=0 u/d=up
Mon Dec 21 14:09:34 2015 MANAGEMENT: >STATE:1450703374,ADD_ROUTES,,,
Mon Dec 21 14:09:34 2015 C:\Windows\system32\route.exe ADD 10.9.8.1 MASK 255.255.255.255 10.9.8.29
Mon Dec 21 14:09:34 2015 ROUTE: CreateIpForwardEntry succeeded with dwForwardMetric1=30 and dwForwardType=4
Mon Dec 21 14:09:34 2015 Route addition via IPAPI succeeded [adaptive]
Mon Dec 21 14:09:34 2015 Initialization Sequence Completed
Mon Dec 21 14:09:34 2015 MANAGEMENT: >STATE:1450703374,CONNECTED,SUCCESS,10.9.8.30,81.240.206.68