Server OPENVPN Server problem

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 .....

jimp

Do you have static routes set on the client pfSense under System > Static Routes? If so, remove it.

Your client pfSense box has a route for 192.168.10.0/24 on em0, not tun0 like it should be.

mst

ok I see…. so after changing Interface IP on the client from right one (10.0.8.0/24) to the wrong one (192.168.99.0/24)
I can ping each other and on pfsence client:

ping 192.168.10.1

PING 192.168.10.1 (192.168.10.1): 56 data bytes
64 bytes from 192.168.10.1: icmp_seq=0 ttl=64 time=15.586 ms
^C
--- 192.168.10.1 ping statistics ---
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 15.586/15.586/15.586/0.000 ms

netstat -nr

Routing tables

Internet:
Destination Gateway Flags Refs Use Netif Expire
default x.x.x.x UGS 0 297425 dc0
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.x 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 13 tun0
192.168.99.0/24 link#2 UC 0 2 em0
192.168.99.1 192.168.99.2 UH 1 0 tun0
192.168.99.109 00:04:f2:16:30:e9 UHLW 1 253487 em0 781
192.168.99.115 00:bb:46:8a:f3:bb UHLW 1 4282 em0 1185

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

well so what can be done in order to make it right tun0? recreate vpn tunnel on the client side from scracth?

jimp

After you remove the static route from the system, you should just need to restart the OpenVPN process (edit/save the openvpn instance, don't need to change anything)

And then it should put the right routes in.

OpenVPN handles the routs itself, you don't need to add any static routes to the system.

mst

wholly smoke !!!! it works !!!

In the future if I add any static route under SYSTEM>STATIC ROUTES on the client or server side is that going to affect tun0 again?

Thank You for your help.

jimp

Only if the routes you add overlap the networks you want to use the VPN.

mst

understand

Thank You very much for your help.

mst

is that ok If I ask one more question based on the routing?

jimp

Never ask to ask - just ask. If you think it would get buried in a thread, just start a new thread. It's a community, everyone can help. :-)

mst

Simply just do not want to be like rest of ….. begging ..... asking .... pushy .... etc....

1. I have added to my scenario DD-WRT with OPenVpn and simply connected using SHARED KEY (easiest one) so now it looks like:

DDWRT ------ OpenVPN 10.0.7.0/30-----PFSENCE A 1.2.3-------OpenVpn 10.0.8.0/30-------PFSENCE B 1.2.3
192.168.1.1 192.168.99.1 192.168.10.1

So clients behind DDWRT and PFSENCE A can ping each other and clients between PFSENCE A and PFSENCE B. What static route should I add (if any) and does it have to be under SYSTEM (STATIC ROUTES) in PFSENCE and respectively in DDWRT to be able ping clients behind DD_WRT and PFSENCE B?

Or just extra line with route "X.X.X.X MASK" to each Open VPN client like in DDWRT:

remote X.X.X.X
port
proto udp
dev tun
ifconfig 10.0.7.1 10.0.7.2
route 192.168.99.0 255.255.255.0
ROUTE 192.168.10.0 255.255.255.0 ???????????????
secret /tmp/static.key
ping 10

AND PFSENCE B:

daemon
keepalive 10 60
ping-timer-rem
persist-tun
persist-key
dev tun
proto udp
cipher BF-CBC
up /etc/rc.filter_configure
down /etc/rc.filter_configure
ifconfig 10.0.8.1 10.0.8.2
lport
push "dhcp-option DISABLE-NBT"
route 192.168.99.0 255.255.255.0
ROUTE 192.168.1.0 255.255.255.0 ???????????????????????
secret /var/etc/openvpn_server0.secret
comp-lzo
persist-remote-ip
float
comp-lzo
cipher AES-128-CBC
verb 3
mute 10

2. I see that PFSENCE 1.2.3 does not have TLS_AUTH option in GUI so If I just add in server/client file config --- will it work? Or have to fallow this link http://forum.pfsense.org/index.php/topic,2747.msg16214.html#msg16214 (does it applied to 1.2.3 ?)

I have added 2nd question and this is not a good sign ...... :)

jimp

On pfSense B, add "route 192.168.1.1 255.255.255.0;" to the custom options.
On DD-WRT, it needs "route 192.168.10.1 255.255.255.0;" - That should be all you need.

As for TLS on 1.2.3, I'm not sure what all you need. I've never tried it (I only use 2.0 these days) - but if someone has a howto, it may work.

mst

Thank You, this is all what I needed in this topic and got even more answers than I expected.

mst

have answer to my question regarding TLS-AUTH

simply go to PACKAGE MANAGER and install OpenVPN-Enhancements (TLS-auth and client/server-options)

unfortunately, it cannot be uninstall-ed later so do not know if affects anything …..

Cheers,

mst

regarding the static routing ….

I can ping from XP client behind PFSENCE B DD_WRT and vice versa, but cannot ping any client behind ddwrt like XP .... (after turning off local firewall)

XP1 ----DDWRT------PFSENCEA-------PFSENCEB------XP2 so XP1 cannot ping XP2 and vice versa.

Could be missing gateway on DD-wrt? there is setup IP 192.168.1.1 mask: /24 but no default gateway .....