Server OPENVPN Server problem

mst

I have a lot of these:

Feb 2 20:39:29 openvpn[14304]: TCP NOTE: Rejected connection attempt from 67.165.x.x:60130 due to –remote setting
Feb 2 20:39:34 openvpn[14304]: TCP NOTE: Rejected connection attempt from 67.165.x.x:28561 due to –remote setting

after disabling OpenVpn server and enabling again on pfsence 1.2.3 all works ok

mst

here is server log:

Feb 2 20:42:22 openvpn[14304]: /etc/rc.filter_configure tun0 1500 1547 10.0.8.1 10.0.8.2 init
Feb 2 20:42:23 openvpn[14304]: SIGTERM[hard,init_instance] received, process exiting
Feb 2 20:42:40 openvpn[7060]: OpenVPN 2.0.6 i386-portbld-freebsd7.2 [SSL] [LZO] built on Dec 4 2009
Feb 2 20:42:40 openvpn[7060]: WARNING: file '/var/etc/openvpn_server0.secret' is group or others accessible
Feb 2 20:42:40 openvpn[7060]: LZO compression initialized
Feb 2 20:42:40 openvpn[7060]: gw 192.41.245.85
Feb 2 20:42:40 openvpn[7060]: TUN/TAP device /dev/tun0 opened
Feb 2 20:42:40 openvpn[7060]: /sbin/ifconfig tun0 10.0.8.1 10.0.8.2 mtu 1500 netmask 255.255.255.255 up
Feb 2 20:42:40 openvpn[7060]: /etc/rc.filter_configure tun0 1500 1547 10.0.8.1 10.0.8.2 init
Feb 2 20:42:41 openvpn[7073]: Listening for incoming TCP connection on [undef]:64000
Feb 2 20:42:42 openvpn[7073]: TCP connection established with 67.165.x.x:50092
Feb 2 20:42:42 openvpn[7073]: TCPv4_SERVER link local (bound): [undef]:64000
Feb 2 20:42:42 openvpn[7073]: TCPv4_SERVER link remote: 67.165.x.x:50092
Feb 2 20:42:42 openvpn[7073]: Peer Connection Initiated with 67.165.x.x:50092
Feb 2 20:42:44 openvpn[7073]: Initialization Sequence Completed
Feb 2 20:42:52 openvpn[7073]: WARNING: 'ifconfig' is used inconsistently, local='ifconfig 10.0.8.1 10.0.8.2', remote='ifconfig 192.168.99.1 192.168.99.2'

jimp

Looks like you have a different tunnel address set on both sides, so it's not matched up.

Post the client and server configurations and it may be easy to spot.

mst

Hmmm this is kinda of wired….

WEB GUI shows something different that files in /var/etc .....

here are server and client files from /var/etc :

192.168.99.0/24 - openvpn client subnet
192.168.10.0/24 - openvpn server subnet

server:
writepid /var/run/openvpn_server0.pid
#user nobody
#group nobody
daemon
keepalive 10 60
ping-timer-rem
persist-tun
persist-key
dev tun
proto tcp-server
cipher BF-CBC
up /etc/rc.filter_configure
down /etc/rc.filter_configure
ifconfig 10.0.8.1 10.0.8.2
lport 64000
push "dhcp-option DISABLE-NBT"
route 192.168.99.0 255.255.255.0
secret /var/etc/openvpn_server0.secret
comp-lzo
persist-remote-ip
float

client:

writepid /var/run/openvpn_client0.pid
#user nobody
#group nobody
daemon
keepalive 10 60
ping-timer-rem
persist-tun
persist-key
dev tun
proto tcp-client
cipher BF-CBC
up /etc/rc.filter_configure
down /etc/rc.filter_configure
remote x.x.x.x 64000
lport 1194
ifconfig 192.168.99.2 192.168.99.1
route 192.168.10.0 255.255.255.0
secret /var/etc/openvpn_client0.secret
comp-lzo

BOTH in GUI server and client CUSTOM OPTIONS have empty .....

jimp

You'd be looking for the "Address pool" and "Interface IP" boxes, not the local/remote subnets.

mst

I am sorry ….. so "Address pool" and "Interface IP" should be the same? in my case 10.0.8.0/24

Thank you

jimp

Yes.

mst

thank you,

looks like client connects to the server but can't ping each other …

Feb 3 08:50:01 openvpn[21655]: Connection reset, restarting [0]
Feb 3 08:50:01 openvpn[21655]: SIGUSR1[soft,connection-reset] received, process restarting
Feb 3 08:50:02 openvpn[21655]: Re-using pre-shared static key
Feb 3 08:50:02 openvpn[21655]: LZO compression initialized
Feb 3 08:50:02 openvpn[21655]: TCP/UDP: Preserving recently used remote address: x.x.x.x:58864
Feb 3 08:50:02 openvpn[21655]: Preserving previous TUN/TAP instance: tun0
Feb 3 08:50:02 openvpn[21655]: Listening for incoming TCP connection on [undef]:64000
Feb 3 08:50:27 openvpn[21655]: TCP connection established with x.x.x.x:59177
Feb 3 08:50:27 openvpn[21655]: TCPv4_SERVER link local (bound): [undef]:64000
Feb 3 08:50:27 openvpn[21655]: TCPv4_SERVER link remote: x.x.x.x:59177
Feb 3 08:50:27 openvpn[21655]: Peer Connection Initiated with x.x.x.x:59177
Feb 3 08:50:28 openvpn[21655]: Initialization Sequence Completed

mst

hmmm i have added route "x.x.x.x x.x.x.x" to custom options in client and servers but still can't ping …....

advice would be appreciate

thank you

mst

hmmmm I don't understand

if I go back to the client GUI config and change INTERFACE IP to local network I can ping each networks in VPN but Interface shoud be address pool of server …....

I am confused why wrong config works and right one does not .......

jimp

Do the openvpn configs still have the routes in them? (you still need the 'remote network' box filled in with the subnet for the far side)

mst

Yes I added to the client in custom options under GUI:

route "192.168.10.0 255.255.255.0";
push "route "192.168.10.0 255.255.255.0";

And to the server in custom options:
route "192.168.99.0 255.255.255.0";
push "route "192.168.99.0 255.255.255.0";

where: 192.168.99.0 - clien subnet
192.168.10.0 server subnet

jimp

You can't push routes with shared key.

You need no custom options, you only need to fill in the remote network field properly.

mst

OK,

then erasing everything from custom options on client side and server side …..

going back to the client and in field INTERFACE IP replacing 192.168.99.0/24 to 10.0.8.0/24

after that server and client logs shows

server:
Feb 3 11:14:13 openvpn[42524]: TCP connection established with x.x.x.x:55362
Feb 3 11:14:13 openvpn[42524]: TCPv4_SERVER link local (bound): [undef]:64000
Feb 3 11:14:13 openvpn[42524]: TCPv4_SERVER link remote:x.x.x.x:55362
Feb 3 11:14:13 openvpn[42524]: Peer Connection Initiated withx.x.x.x:55362
Feb 3 11:14:14 openvpn[42524]: Initialization Sequence Completed

client:

eb 3 11:14:06 openvpn[33248]: event_wait : Interrupted system call (code=4)
Feb 3 11:14:06 openvpn[33248]: /etc/rc.filter_configure tun0 1500 1547 10.0.8.2 10.0.8.1 init
Feb 3 11:14:08 openvpn[33652]: OpenVPN 2.0.6 i386-portbld-freebsd7.2 [SSL] [LZO] built on Dec 4 2009
Feb 3 11:14:08 openvpn[33652]: WARNING: file '/var/etc/openvpn_client0.secret' is group or others accessible
Feb 3 11:14:08 openvpn[33652]: LZO compression initialized
Feb 3 11:14:08 openvpn[33652]: gw x.x.x.x
Feb 3 11:14:08 openvpn[33652]: TUN/TAP device /dev/tun0 opened
Feb 3 11:14:08 openvpn[33652]: /sbin/ifconfig tun0 10.0.8.2 10.0.8.1 mtu 1500 netmask 255.255.255.255 up
Feb 3 11:14:08 openvpn[33652]: /etc/rc.filter_configure tun0 1500 1547 10.0.8.2 10.0.8.1 init.
Feb 3 11:14:09 openvpn[33248]: SIGTERM[hard,] received, process exiting
Feb 3 11:14:13 openvpn[33672]: Attempting to establish TCP connection with x.x.x.x:64000
Feb 3 11:14:13 openvpn[33672]: TCP connection established with x.x.x.x:64000
Feb 3 11:14:13 openvpn[33672]: TCPv4_CLIENT link local: [undef]
Feb 3 11:14:13 openvpn[33672]: TCPv4_CLIENT link remote: x.x.x.x:64000
Feb 3 11:14:13 openvpn[33672]: Peer Connection Initiated with x.x.x.x:64000
Feb 3 11:14:14 openvpn[33672]: Initialization Sequence Completed

But again can't ping each other ….

mst

i have double checked on the server side:

remote network: 192.168.99.0/24

and client side: 192.168.10.0/24

in field REMOTE NETWORK where:

client network:192.168.99.0/24
server network: 192.168.10.0/24

So all should be perfect but still can't ping each other …....

jimp

Where are you trying to ping from?

A client machine, or the firewall GUI?

mst

both,

in GUI on the server I try to ping client GW 192.168.99.1 and vice versa –-- no luck

also on the XP laptop behind server try to ping 192.168.99.1 ----- no luck

With Interface IP set to the wrong one "192.168.99.0/24" instead of "10.0.8.0/24" I can ping the other side from whatever place (GUI or XP client) in both ways....

mst

In firewall rules under LAN I have respectivelly rules that

on the server all traffic should be passed from source 192.168.99.0/24

and client from source 192.168.10.0/24 so firewall should not be the issue. Also the WAN port 64000 TCP/UDP is open on both client and server.

jimp

show the routing table from both sides:

netstat -rn

mst

server pfsence:

netstat -nr

Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default x.x.x.x UGS 0 4541712 sis0
10.0.8.2 10.0.8.1 UH 1 0 tun0
127.0.0.1 127.0.0.1 UH 0 0 lo0
X.X.X.80/29 link#2 UC 0 0 sis0
X.X.X.85 00:00:0c:07:ac:f3 UHLW 2 20485 sis0 13
192.168.1.0/24 192.168.200.2 UGS 0 16369 tun1
192.168.8.0/24 link#4 UC 0 0 de1
192.168.9.0/24 link#3 UC 0 0 de0
192.168.10.0/24 link#1 UC 0 0 em0
192.168.10.1 00:1a:a0:8d:20:ff UHLW 1 0 lo0
192.168.10.103 00:04:f2:10:52:6f UHLW 1 1 em0 1029
192.168.10.104 00:30:48:12:59:7f UHLW 1 44503 em0 1169
192.168.10.107 00:19:d1:4f:45:1a UHLW 1 104 em0 1105
192.168.10.111 00:0e:0c:aa:a0:93 UHLW 1 951812 em0 1151
192.168.10.113 00:04:f2:03:0a:97 UHLW 1 1 em0 572
192.168.10.114 00:04:f2:13:28:3f UHLW 1 2144 em0 749
192.168.10.115 00:14:c2:54:e5:cf UHLW 1 1 em0 577
192.168.10.118 00:1c:23:37:ac:bf UHLW 2 159550 em0 563
192.168.99.0/24 10.0.8.2 UGS 0 129 tun0
192.168.100.2 192.168.100.1 UH 0 0 tun2
192.168.200.2 192.168.200.1 UH 1 0 tun1

client XP behind server (pfsence)
C:>netstat -nr

Route Table

Interface List
0x1 …........................ MS TCP Loopback interface
0x2 ...00 1c 23 37 ac bf ...... Broadcom NetXtreme 57xx Gigabit Controller - Pac
ket Scheduler Miniport
0x3 ...00 1f 3a 1e 79 31 ...... Dell Wireless 1390 WLAN Mini-Card - Packet Sched
uler Miniport
0x4 ...00 ff 65 48 64 db ...... TAP-Win32 Adapter OAS - Packet Scheduler Minipor
t
0x5 ...00 ff 33 ec 08 85 ...... TAP-Win32 Adapter V9 - Packet Scheduler Miniport

===========================================================================

Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 192.168.10.1 192.168.10.118 20
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
192.168.10.0 255.255.255.0 192.168.10.118 192.168.10.118 20
192.168.10.118 255.255.255.255 127.0.0.1 127.0.0.1 20
192.168.10.255 255.255.255.255 192.168.10.118 192.168.10.118 20
224.0.0.0 240.0.0.0 192.168.10.118 192.168.10.118 20
255.255.255.255 255.255.255.255 192.168.10.118 4 1
255.255.255.255 255.255.255.255 192.168.10.118 3 1
255.255.255.255 255.255.255.255 192.168.10.118 192.168.10.118 1
255.255.255.255 255.255.255.255 192.168.10.118 5 1
Default Gateway: 192.168.10.1

Persistent Routes:

CLIENT pfsence:

netstat -nr

Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default X.X.X.1 UGS 0 295969 dc0
10.0.8.1 10.0.8.2 UH 0 0 tun0
x.x.x.x 127.0.0.1 UGHS 0 0 lo0
X.X.X.0/23 link#3 UC 0 0 dc0
X.X.X.1 00:01:5c:22:3c:41 UHLW 2 0 dc0 1199
X.x.x.x 127.0.0.1 UGHS 0 3 lo0
127.0.0.1 127.0.0.1 UH 2 0 lo0
192.168.10.0/24 192.168.99.1 UGS 0 2016 em0
192.168.99.0/24 link#2 UC 0 2 em0
192.168.99.1 00:1b:21:08:81:0b UHLW 2 1984 lo0
192.168.99.109 00:04:f2:16:30:e9 UHLW 1 222919 em0 467
192.168.99.115 00:bb:46:8a:f3:bb UHLW 1 4254 em0 861

Internet6:
Destination Gateway Flags Netif Expire
::1 ::1 UHL lo0
fe80::%fxp0/64 link#1 UC fxp0
fe80::20e:4eff:fe9e:a22c%fxp0 00:0e:4e:9e:a2:2c UHL lo0
fe80::%em0/64 link#2 UC em0
fe80::21b:21ff:fe08:810b%em0 00:1b:21:08:81:0b UHL lo0
fe80::%dc0/64 link#3 UC dc0
fe80::2bb:46ff:fe8a:f3bb%dc0 00:bb:46:8a:f3:bb UHL lo0
fe80::%lo0/64 fe80::1%lo0 U lo0
fe80::1%lo0 link#4 UHL lo0
fe80::20e:4eff:fe9e:a22c%tun0 link#8 UHL lo0
ff01:1::/32 link#1 UC fxp0
ff01:2::/32 link#2 UC em0
ff01:3::/32 link#3 UC dc0
ff01:4::/32 ::1 UC lo0
ff01:8::/32 link#8 UC tun0
ff02::%fxp0/32 link#1 UC fxp0
ff02::%em0/32 link#2 UC em0
ff02::%dc0/32 link#3 UC dc0
ff02::%lo0/32 ::1 UC lo0
ff02::%tun0/32 link#8 UC tun0

don't have netstat -nr from any XP behind pfsence client .....