LAN not work when conn. with CISCO vpn client

October 7, 2010 at 06:36:45
Specs: Windows XP
my computer local ip is 172.16.1.19 subnet 255.255.0.0. and gateway is 172.16.1.5. When I connect to my corporate VPN using Cisco anyconnect VPN client my LAN gets disabled.

I tried Route add 0.0.0.0 mask 0.0.0.0 172.16.15 metric 1. My route changes but after one second again it goes. I am not able to connect to my LAN computers and machines. I am using Windows XP on local computer.

After connecting VPN "Route print" gives the following :

===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 172.16.1.5 172.16.10.19 1
10.20.30.125 255.255.255.255 147.183.135.86 147.183.135.86 1
67.220.116.100 255.255.255.255 172.16.1.5 172.16.10.19 1
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
147.183.0.0 255.255.0.0 147.183.135.86 147.183.135.86 1
147.183.135.0 255.255.255.0 147.183.135.86 147.183.135.86 1
147.183.135.86 255.255.255.255 127.0.0.1 127.0.0.1 1
147.183.255.255 255.255.255.255 147.183.135.86 147.183.135.86 1
172.16.0.0 255.255.0.0 172.16.10.19 172.16.10.19 20
172.16.0.0 255.255.0.0 147.183.135.86 147.183.135.86 1
172.16.10.19 255.255.255.255 127.0.0.1 127.0.0.1 20
172.16.255.255 255.255.255.255 172.16.10.19 172.16.10.19 20
192.168.57.0 255.255.255.0 147.183.135.86 147.183.135.86 1
192.168.128.0 255.255.254.0 147.183.135.86 147.183.135.86 1
224.0.0.0 240.0.0.0 147.183.135.86 147.183.135.86 1
224.0.0.0 240.0.0.0 172.16.10.19 172.16.10.19 20
255.255.255.255 255.255.255.255 147.183.135.86 147.183.135.86 1
255.255.255.255 255.255.255.255 172.16.10.19 172.16.10.19 1
Default Gateway: 172.16.1.5
===========================================================================

- Robert


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#1
October 7, 2010 at 08:26:34
It is the vpn that is doing this. This is by design. Would your company want your local network infecting/accesssing the corporate network?

Might want to present this issue to your corp IT dept and get their take on the issue.


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#2
October 7, 2010 at 08:26:57
Open a command prompt window and do an ipconfig /all when you're not connected to your VPN, and then another when you are. Please post the output in a reponse here for use to look at.

If you want a quick and easy way to copy the info our of your command prompt window, click on my name above in my response and read my "how-to" guide on "Post the output of ipconfig (Version 2)"

It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.

***William Henley***


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#3
October 8, 2010 at 00:41:06
Hi Curt R,

here what i got from ipconfig /all:

1. not connected with VPN
===================================
Windows IP Configuration

Host Name . . . . . . . . . . . . : Robert
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8169/8110 Family Gigabit
Ethernet NIC
Physical Address. . . . . . . . . : 00-14-2A-EF-F4-44
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 172.16.10.19
Subnet Mask . . . . . . . . . . . : 255.255.0.0
IP Address. . . . . . . . . . . . : fe80::214:2aff:feef:f444%4
Default Gateway . . . . . . . . . : 172.16.1.5
DNS Servers . . . . . . . . . . . : 101.28.1.51
10.128.1.52
fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : FF-FF-FF-FF-FF-FF-FF-FF
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5445:5245:444f%5
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Automatic Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Automatic Tunneling Pseudo-Interface

Physical Address. . . . . . . . . : AC-10-0A-13
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5efe:172.16.10.19%2
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Disabled
===============================================

2. connected with VPN
============================
Windows IP Configuration

Host Name . . . . . . . . . . . . : Robert
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8169/8110 Family Gigabit
Ethernet NIC
Physical Address. . . . . . . . . : 00-14-2A-EF-F4-44
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 172.16.10.19
Subnet Mask . . . . . . . . . . . : 255.255.0.0
IP Address. . . . . . . . . . . . : fe80::214:2aff:feef:f444%4
Default Gateway . . . . . . . . . : 172.16.1.5
DNS Servers . . . . . . . . . . . : 101.28.1.51
10.128.1.52
fec0:0:0:ffff::1%4
fec0:0:0:ffff::2%4
fec0:0:0:ffff::3%4

Ethernet adapter Cisco AnyConnect VPN Client Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Cisco AnyConnect VPN Virtual Minipor
t Adapter for Windows
Physical Address. . . . . . . . . : 00-05-9A-3C-7A-00
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 147.183.135.144
Subnet Mask . . . . . . . . . . . : 255.255.255.0
IP Address. . . . . . . . . . . . : fe80::205:9aff:fe3c:7a00%6
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 147.183.128.12
147.183.128.13
fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : FF-FF-FF-FF-FF-FF-FF-FF
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5445:5245:444f%5
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter 6to4 Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 6to4 Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 93-B7-87-90
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 2002:93b7:8790::93b7:8790
Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Automatic Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Automatic Tunneling Pseudo-Interface

Physical Address. . . . . . . . . : 93-B7-87-90
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5efe:147.183.135.144%2
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Disabled

Tunnel adapter Automatic Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Automatic Tunneling Pseudo-Interface

Physical Address. . . . . . . . . : AC-10-0A-13
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5efe:172.16.10.19%2
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%4
fec0:0:0:ffff::2%4
fec0:0:0:ffff::3%4
NetBIOS over Tcpip. . . . . . . . : Disabled
====================================================


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