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[Openvpn-users] Problem with openvpn and bridging


  • Subject: [Openvpn-users] Problem with openvpn and bridging
  • From: "Ralf Gerhard" <EDV.Gerhard@xxxxxxxxxxx>
  • Date: Tue, 1 Jun 2004 10:31:27 +0200

Hello,

I'm trying to setup a vpn in bridging mode but without success
up to now. The remote client can't ping a server in the local net.

The configuration is based upon the howto by Florin Andrei.

VPN server is our firewall (debian woody, openvpn-1.6.0 from
backports.org),
Client is a XP system. Internal net is 192.168.1.0/24, dmz-net is
195.243.59.96/28

In a faq I read "WARNING: Actual Remote Options" could be a problem, but
the only 
difference is "ifconfig 192.168.1.0 255.255.255.0" vs. "ifconfig".

Below you will find the servers log and the config of the client.

Is this a openvpn config problem or does the firewall interfere ?
Do you have any hints? 


Thanks in advance,

      Ralf Gerhard


Server log:
Tue Jun  1 09:21:26 2004 129[0]: select : Interrupted system call
(code=4)
Tue Jun  1 09:21:26 2004 130[0]: SIGTERM received, exiting
Tue Jun  1 09:21:26 2004 131[0]: Closing TCP/UDP socket
Tue Jun  1 09:21:26 2004 132[0]: Closing TUN/TAP device
Tue Jun  1 09:21:27 2004 0[0]: Current Parameter Settings:
Tue Jun  1 09:21:27 2004 1[0]:   config = '/etc/openvpn/sagaflor.conf'
Tue Jun  1 09:21:27 2004 2[0]:   persist_config = DISABLED
Tue Jun  1 09:21:27 2004 3[0]:   persist_mode = 1
Tue Jun  1 09:21:27 2004 4[0]:   show_ciphers = DISABLED
Tue Jun  1 09:21:27 2004 5[0]:   show_digests = DISABLED
Tue Jun  1 09:21:27 2004 6[0]:   genkey = DISABLED
Tue Jun  1 09:21:27 2004 7[0]:   askpass = DISABLED
Tue Jun  1 09:21:27 2004 8[0]:   show_tls_ciphers = DISABLED
Tue Jun  1 09:21:27 2004 9[0]:   proto = 0
Tue Jun  1 09:21:27 2004 10[0]:   local = '195.243.59.97'
Tue Jun  1 09:21:27 2004 11[0]:   remote = '[UNDEF]'
Tue Jun  1 09:21:27 2004 12[0]:   local_port = 5000
Tue Jun  1 09:21:27 2004 13[0]:   remote_port = 5000
Tue Jun  1 09:21:27 2004 14[0]:   remote_float = DISABLED
Tue Jun  1 09:21:27 2004 15[0]:   ipchange = '[UNDEF]'
Tue Jun  1 09:21:27 2004 16[0]:   bind_local = ENABLED
Tue Jun  1 09:21:27 2004 17[0]:   dev = 'tap0'
Tue Jun  1 09:21:27 2004 18[0]:   dev_type = '[UNDEF]'
Tue Jun  1 09:21:27 2004 19[0]:   dev_node = '[UNDEF]'
Tue Jun  1 09:21:27 2004 20[0]:   tun_ipv6 = DISABLED
Tue Jun  1 09:21:27 2004 21[0]:   ifconfig_local = '[UNDEF]'
Tue Jun  1 09:21:27 2004 22[0]:   ifconfig_remote_netmask = '[UNDEF]'
Tue Jun  1 09:21:27 2004 23[0]:   ifconfig_noexec = DISABLED
Tue Jun  1 09:21:27 2004 24[0]:   ifconfig_nowarn = DISABLED
Tue Jun  1 09:21:27 2004 25[0]:   shaper = 0
Tue Jun  1 09:21:27 2004 26[0]:   tun_mtu = 1500
Tue Jun  1 09:21:27 2004 27[0]:   tun_mtu_defined = ENABLED
Tue Jun  1 09:21:27 2004 28[0]:   link_mtu = 1300
Tue Jun  1 09:21:27 2004 29[0]:   link_mtu_defined = DISABLED
Tue Jun  1 09:21:27 2004 30[0]:   tun_mtu_extra = 32
Tue Jun  1 09:21:27 2004 31[0]:   tun_mtu_extra_defined = ENABLED
Tue Jun  1 09:21:27 2004 32[0]:   fragment = 1400
Tue Jun  1 09:21:27 2004 33[0]:   mtu_discover_type = -1
Tue Jun  1 09:21:27 2004 34[0]:   mtu_test = 0
Tue Jun  1 09:21:27 2004 35[0]:   mlock = DISABLED
Tue Jun  1 09:21:27 2004 36[0]:   inactivity_timeout = 0
Tue Jun  1 09:21:27 2004 37[0]:   ping_send_timeout = 10
Tue Jun  1 09:21:27 2004 38[0]:   ping_rec_timeout = 45
Tue Jun  1 09:21:27 2004 39[0]:   ping_rec_timeout_action = 2
Tue Jun  1 09:21:27 2004 40[0]:   ping_timer_remote = ENABLED
Tue Jun  1 09:21:27 2004 41[0]:   persist_tun = ENABLED
Tue Jun  1 09:21:27 2004 42[0]:   persist_local_ip = ENABLED
Tue Jun  1 09:21:27 2004 43[0]:   persist_remote_ip = DISABLED
Tue Jun  1 09:21:27 2004 44[0]:   persist_key = ENABLED
Tue Jun  1 09:21:27 2004 45[0]:   mssfix_defined = ENABLED
Tue Jun  1 09:21:27 2004 46[0]:   mssfix = 0
Tue Jun  1 09:21:27 2004 47[0]:   passtos = DISABLED
Tue Jun  1 09:21:27 2004 48[0]:   resolve_retry_seconds = 0
Tue Jun  1 09:21:27 2004 49[0]:   connect_retry_seconds = 5
Tue Jun  1 09:21:27 2004 50[0]:   username = '[UNDEF]'
Tue Jun  1 09:21:27 2004 51[0]:   groupname = '[UNDEF]'
Tue Jun  1 09:21:27 2004 52[0]:   chroot_dir = '[UNDEF]'
Tue Jun  1 09:21:27 2004 53[0]:   cd_dir = '/etc/openvpn'
Tue Jun  1 09:21:27 2004 54[0]:   writepid =
'/var/run/openvpn.sagaflor.pid'
Tue Jun  1 09:21:27 2004 55[0]:   up_script = '[UNDEF]'
Tue Jun  1 09:21:27 2004 56[0]:   down_script = '[UNDEF]'
Tue Jun  1 09:21:27 2004 57[0]:   up_restart = DISABLED
Tue Jun  1 09:21:27 2004 58[0]:   daemon = ENABLED
Tue Jun  1 09:21:27 2004 59[0]:   inetd = 0
Tue Jun  1 09:21:27 2004 60[0]:   log = ENABLED
Tue Jun  1 09:21:27 2004 61[0]:   nice = 0
Tue Jun  1 09:21:27 2004 62[0]:   verbosity = 4
Tue Jun  1 09:21:27 2004 63[0]:   mute = 0
Tue Jun  1 09:21:27 2004 64[0]:   gremlin = DISABLED
Tue Jun  1 09:21:27 2004 65[0]:   occ = ENABLED
Tue Jun  1 09:21:27 2004 66[0]:   http_proxy_server = '[UNDEF]'
Tue Jun  1 09:21:27 2004 67[0]:   http_proxy_port = 0
Tue Jun  1 09:21:27 2004 68[0]:   http_proxy_auth_method = '[UNDEF]'
Tue Jun  1 09:21:27 2004 69[0]:   http_proxy_auth_file = '[UNDEF]'
Tue Jun  1 09:21:27 2004 70[0]:   http_proxy_retry = DISABLED
Tue Jun  1 09:21:27 2004 71[0]:   socks_proxy_server = '[UNDEF]'
Tue Jun  1 09:21:27 2004 72[0]:   socks_proxy_port = 0
Tue Jun  1 09:21:27 2004 73[0]:   socks_proxy_retry = DISABLED
Tue Jun  1 09:21:27 2004 74[0]:   comp_lzo = ENABLED
Tue Jun  1 09:21:27 2004 75[0]:   comp_lzo_adaptive = ENABLED
Tue Jun  1 09:21:27 2004 76[0]:   route_script = '[UNDEF]'
Tue Jun  1 09:21:27 2004 77[0]:   route_default_gateway = '[UNDEF]'
Tue Jun  1 09:21:27 2004 78[0]:   route_noexec = DISABLED
Tue Jun  1 09:21:27 2004 79[0]:   route_delay = 0
Tue Jun  1 09:21:27 2004 80[0]:   route_delay_defined = DISABLED
Tue Jun  1 09:21:27 2004 81[0]:   shared_secret_file = 'static.key'
Tue Jun  1 09:21:27 2004 82[0]:   key_direction = 0
Tue Jun  1 09:21:27 2004 83[0]:   ciphername_defined = ENABLED
Tue Jun  1 09:21:27 2004 84[0]:   ciphername = 'BF-CBC'
Tue Jun  1 09:21:27 2004 85[0]:   authname_defined = ENABLED
Tue Jun  1 09:21:27 2004 86[0]:   authname = 'SHA1'
Tue Jun  1 09:21:27 2004 87[0]:   keysize = 0
Tue Jun  1 09:21:27 2004 88[0]:   replay = ENABLED
Tue Jun  1 09:21:27 2004 89[0]:   replay_window = 64
Tue Jun  1 09:21:27 2004 90[0]:   replay_time = 15
Tue Jun  1 09:21:27 2004 91[0]:   packet_id_file = '[UNDEF]'
Tue Jun  1 09:21:27 2004 92[0]:   use_iv = ENABLED
Tue Jun  1 09:21:27 2004 93[0]:   test_crypto = DISABLED
Tue Jun  1 09:21:27 2004 94[0]:   tls_server = DISABLED
Tue Jun  1 09:21:27 2004 95[0]:   tls_client = DISABLED
Tue Jun  1 09:21:27 2004 96[0]:   key_method = 1
Tue Jun  1 09:21:27 2004 97[0]:   ca_file = '[UNDEF]'
Tue Jun  1 09:21:27 2004 98[0]:   dh_file = '[UNDEF]'
Tue Jun  1 09:21:27 2004 99[0]:   cert_file = '[UNDEF]'
Tue Jun  1 09:21:27 2004 100[0]:   priv_key_file = '[UNDEF]'
Tue Jun  1 09:21:27 2004 101[0]:   cipher_list = '[UNDEF]'
Tue Jun  1 09:21:27 2004 102[0]:   tls_verify = '[UNDEF]'
Tue Jun  1 09:21:27 2004 103[0]:   tls_remote = '[UNDEF]'
Tue Jun  1 09:21:27 2004 104[0]:   crl_file = '[UNDEF]'
Tue Jun  1 09:21:27 2004 105[0]:   tls_timeout = 2
Tue Jun  1 09:21:27 2004 106[0]:   renegotiate_bytes = 0
Tue Jun  1 09:21:27 2004 107[0]:   renegotiate_packets = 0
Tue Jun  1 09:21:27 2004 108[0]:   renegotiate_seconds = 3600
Tue Jun  1 09:21:27 2004 109[0]:   handshake_window = 60
Tue Jun  1 09:21:27 2004 110[0]:   transition_window = 3600
Tue Jun  1 09:21:27 2004 111[0]:   single_session = DISABLED
Tue Jun  1 09:21:27 2004 112[0]:   tls_auth_file = '[UNDEF]'
Tue Jun  1 09:21:27 2004 113[0]: OpenVPN 1.6.0 i386-pc-linux-gnu [SSL]
[LZO] [PTHREAD] built on May 10 2004
Tue Jun  1 09:21:27 2004 114[0]: Static Encrypt: Cipher 'BF-CBC'
initialized with 128 bit key
Tue Jun  1 09:21:27 2004 115[0]: Static Encrypt: Using 160 bit message
hash 'SHA1' for HMAC authentication
Tue Jun  1 09:21:27 2004 116[0]: Static Decrypt: Cipher 'BF-CBC'
initialized with 128 bit key
Tue Jun  1 09:21:27 2004 117[0]: Static Decrypt: Using 160 bit message
hash 'SHA1' for HMAC authentication
Tue Jun  1 09:21:27 2004 118[0]: LZO compression initialized
Tue Jun  1 09:21:27 2004 119[0]: TUN/TAP device tap0 opened
Tue Jun  1 09:21:27 2004 120[0]: Data Channel MTU parms [ L:1581 D:1400
EF:49 EB:19 ET:32 EL:0 ]
Tue Jun  1 09:21:27 2004 121[0]: Fragmentation MTU parms [ L:1581 D:1400
EF:48 EB:19 ET:33 EL:0 ]
Tue Jun  1 09:21:27 2004 122[0]: Local Options String: 'V3,dev-type
tap,link-mtu 1581,tun-mtu 1532,proto UDPv4,ifconfig
,comp-lzo,mtu-dynamic,cipher BF-CBC,auth SHA1,keysize 128,secret'
Tue Jun  1 09:21:27 2004 123[0]: Expected Remote Options String:
'V3,dev-type tap,link-mtu 1581,tun-mtu 1532,proto UDPv4,ifconfig
,comp-lzo,mtu-dynamic,cipher BF-CBC,auth SHA1,keysize 128,secret'
Tue Jun  1 09:21:27 2004 124[0]: Local Options hash (VER=V3): '11529904'
Tue Jun  1 09:21:27 2004 125[0]: Expected Remote Options hash (VER=V3):
'11529904'
Tue Jun  1 09:21:27 2004 126[0]: PTHREAD support initialized
Tue Jun  1 09:21:27 2004 127[0]: UDPv4 link local (bound):
195.243.59.97:5000
Tue Jun  1 09:21:27 2004 128[0]: UDPv4 link remote: [undef]
Tue Jun  1 09:22:44 2004 129[0]: Peer Connection Initiated with
213.7.100.82:5000
Tue Jun  1 09:22:47 2004 130[0]: WARNING: Actual Remote Options
('V3,dev-type tap,link-mtu 1581,tun-mtu 1532,proto UDPv4,ifconfig
192.168.1.0 255.255.255.0,comp-lzo,mtu-dynamic,cipher BF-CBC,auth
SHA1,keysize 128,secret') are inconsistent with Expected Remote Options
('V3,dev-type tap,link-mtu 1581,tun-mtu 1532,proto UDPv4,ifconfig
,comp-lzo,mtu-dynamic,cipher BF-CBC,auth SHA1,keysize 128,secret')
Tue Jun  1 09:23:37 2004 131[0]: Inactivity timeout (--ping-restart),
restarting
Tue Jun  1 09:23:37 2004 132[0]: Closing TCP/UDP socket
Tue Jun  1 09:23:37 2004 133[0]: Re-using pre-shared static key
Tue Jun  1 09:23:37 2004 134[0]: LZO compression initialized
Tue Jun  1 09:23:37 2004 135[0]: Preserving previous TUN/TAP instance:
tap0
Tue Jun  1 09:23:37 2004 136[0]: Data Channel MTU parms [ L:1581 D:1400
EF:49 EB:19 ET:32 EL:0 ]
Tue Jun  1 09:23:37 2004 137[0]: Fragmentation MTU parms [ L:1581 D:1400
EF:48 EB:19 ET:33 EL:0 ]
Tue Jun  1 09:23:37 2004 138[0]: Local Options String: 'V3,dev-type
tap,link-mtu 1581,tun-mtu 1532,proto UDPv4,ifconfig
,comp-lzo,mtu-dynamic,cipher BF-CBC,auth SHA1,keysize 128,secret'
Tue Jun  1 09:23:37 2004 139[0]: Expected Remote Options String:
'V3,dev-type tap,link-mtu 1581,tun-mtu 1532,proto UDPv4,ifconfig
,comp-lzo,mtu-dynamic,cipher BF-CBC,auth SHA1,keysize 128,secret'
Tue Jun  1 09:23:37 2004 140[0]: Local Options hash (VER=V3): '11529904'
Tue Jun  1 09:23:37 2004 141[0]: Expected Remote Options hash (VER=V3):
'11529904'
Tue Jun  1 09:23:37 2004 142[0]: UDPv4 link local (bound):
195.243.59.97:5000
Tue Jun  1 09:23:37 2004 143[0]: UDPv4 link remote: [undef]



Client Config:

remote 195.243.59.97
port 5000
dev tap
ifconfig 192.168.1.6 255.255.255.0

fragment 1400
mssfix
secret static.key
ping 10
comp-lzo
verb 4
route 195.243.59.96 255.255.255.240 192.168.1.2
route-delay 4
tap-sleep 1

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