ASA vpn client
Hello world
I would like to ask for help in order to correct a customer vpn tunnel. I'm not familiar with the AAS, so please do not laugh if I write something stupid
So I inherit one asa, which has two interface used physical and vlan more. Outdoors, office, management and management. I use my computer on the vlan management, and I can reach the computers on the desktop (192.168.12.0/24) and the branch (192.168.10.0/24). I would realize that I connect to thrught houses a vpn, and I should reach the 12.x and 10.x network as I was in these networks (due to the microsoft allowed wirewall to the local network traffic).
I inherited a vpn configuration which I added my user.
I'm trying to cite only the relevant portion of config:
SSH 192.168.99.0 255.255.255.0 management
access extensive list ip 192.168.99.0 nonat_management allow 255.255.255.0 192.168.99.0 255.255.255.0
access extensive list ip 192.168.99.0 nat_management_branch allow 255.255.255.0 192.168.10.0 255.255.255.0
access extensive list ip 192.168.99.0 nat_management_office allow 255.255.255.0 192.168.12.0 255.255.255.0
IP local pool ippool 192.168.99.100 - 192.168.99.200
NAT-control
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NAT (management) - access list 0 nonat_management
nat_management_office list of access 5 NAT (management)
nat_management_branch list of Access 10 NAT (management)
192.168.99.50 management - dhcpd addresses 192.168.99.79
enable dhcpd management
L2TP strategy of Group internal
monty password username * == encrypted nt
monty username attributes
Protocol-tunnel-VPN l2tp ipsec
VPN-framed-ip-address 192.168.99.99 255.255.255.0
attributes global-tunnel-group DefaultRAGroup
ippool address pool
Group Policy - by default-l2tp
IPSec-attributes tunnel-group DefaultRAGroup
pre-shared key *.
tunnel-group DefaultRAGroup ppp-attributes
ms-chap-v2 authentication
I quote the encryption settings, because I can connect to asa, I think that I have problems with the nat or access rules.
I have an ip local pool 192.168.99.100 - 192.168.99.200, but I have the fixed ip with the vpn-framed-ip-address 192.168.99.99 255.255.255.0
Happened when I connect and try to reach the following computers:
I can reach only a freenas 192.168.12.2, and I see in his journal that I have connected with 192.168.99.99 (vpn-framed-ip-address)
I can't reach the computers on networks, however I have two nat rules, working when I'm in the office network 99.0
access extensive list ip 192.168.99.0 nat_management_branch allow 255.255.255.0 192.168.10.0 255.255.255.0
access extensive list ip 192.168.99.0 nat_management_office allow 255.255.255.0 192.168.12.0 255.255.255.0
It seems that these two nat rules do not work with my vpn client.
And it is very important to arrive at the asa with ssh through the tunnel, but I can't.
I don't know if that is the ip address of the vpn client is in the management network, perhaps one should change to another network:
for example 192.168.95.0/24
A vpn asa for Dummies or any help is appreciated.
Thank you very much
Hi Chris,
The following should help:
access-list allowed 192.168.12.0 nonat_office 255.255.255.0 192.168.90.0 255.255.255.0
In this way, returning office subnet pool VPN traffic is exempt from nat. And so you will not get the failure of RPF checking.
In addition, you must change this:
nat_vpn_office to access extended list ip 10.10.10.0 allow 255.255.255.0 192.168.12.0 255.255.255.0
(incoming traffic on the VPN remote access would come from the VPN pool.) Not your home network.)
You must have:
No nat_vpn_office access list extended ip 10.10.10.0 allow 255.255.255.0 192.168.12.0 255.255.255.0
access extensive list ip 192.168.90.0 nat_vpn_office allow 255.255.255.0 192.168.12.0 255.255.255.0
NAT (outside) 5 nat_vpn_office list of outdoor access
Hope this helps, and sorry for the delay.
-Shrikant
P.S.: Please check the question as answered if it was resolved. Do rates all useful messages. Thank you.
Tags: Cisco Security
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