Question:

I have an ASA that I have multiple L2L’s and remote users setup on.  Over the weekend I deleted one of the L2L’s since we closed that office.  It may be a fluke but since then the Cisco VPN Client users have complained of slowness over the VPN.  Today I created a new user and when I connected with that user I dont get an IP address from the router.  The VPN will connect but no traffic will go through and the user doesn’t get an IP address.

Below is the running config.  Does anybody see anything wrong with it?  It was working great until I removed the other L2L.  BTW, one user is able to connect using their Cisco VPN Client and she stays connected but she is complaining of slow speeds over the vpn.  I probably deleted something when I removed the L2L.  Any ideas what it could be??

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ASA Version 7.2(3)
!
hostname CF-Whit
domain-name
enable password ybkPG8eo3tv6 encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.0.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address 66.76.***.*** 255.255.255.240
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
passwd yb3291itv6 encrypted
ftp mode passive
clock timezone CST -6
clock summer-time CDT recurring
dns server-group DefaultDNS
domain-name ***
access-list outside_access_in extended permit tcp any interface outside eq 3389
access-list outside_access_in extended permit tcp any interface outside eq ftp
access-list outside_access_in extended permit icmp any any echo-reply
access-list outside_access_in extended permit tcp any host 66.76.***.*** eq smtp
access-list outside_access_in extended permit tcp any host 66.76.***.*** eq 3389
access-list outside_access_in extended permit tcp any host 66.76.***.*** eq www
access-list outside_access_in extended permit tcp any host 66.76.***.*** eq 5178
access-list outside_access_in extended permit tcp any host 66.76.***.*** eq 5177
access-list outside_access_in extended permit tcp any interface outside eq 2000
access-list outside_access_in extended permit tcp any host 66.76.***.*** eq https
access-list outside_access_in extended permit tcp any host 66.76.***.*** eq pop3
access-list outside_access_in extended permit tcp any host 66.76.***.*** eq 2525
access-list Users_splitTunnelAcl standard permit any
access-list 200 extended permit ip 192.168.0.0 255.255.255.0 192.168.3.0 255.255.255.0
access-list RemoteUsers_splitTunnelAcl standard permit 192.168.0.0 255.255.255.0
access-list nonat extended permit ip 192.168.0.0 255.255.255.0 192.168.0.0 255.255.255.0
access-list nonat extended permit ip 192.168.0.0 255.255.255.0 192.168.3.0 255.255.255.0
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
ip local pool Users 192.168.0.240-192.168.0.245 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
icmp permit any echo outside
icmp permit any echo-reply outside
asdm image disk0:/asdm-523.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list nonat
nat (inside) 1 0.0.0.0 0.0.0.0
static (inside,outside) tcp interface 3389 192.168.0.3 3389 netmask 255.255.255.255
static (inside,outside) tcp interface ftp 192.168.0.3 ftp netmask 255.255.255.255
static (inside,outside) tcp interface 2000 192.168.0.3 2000 netmask 255.255.255.255
static (inside,outside) 66.76.***.*** 192.168.0.4 netmask 255.255.255.255
access-group outside_access_in in interface outside
route outside 0.0.0.0 0.0.0.0 66.76.***.*** 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout uauth 0:05:00 absolute
aaa authorization command LOCAL
http server enable
http 192.168.0.0 255.255.255.0 inside
http 192.168.0.0 255.255.0.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
crypto dynamic-map outside_dyn_map 20 set pfs
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-SHA
crypto dynamic-map outside_dyn_map 40 set pfs
crypto dynamic-map outside_dyn_map 40 set transform-set ESP-3DES-SHA
crypto map outside_map 30 set transform-set ESP-AES-256-SHA
crypto map outside_map 60 match address 200
crypto map outside_map 60 set pfs
crypto map outside_map 60 set peer 66.76.***.***
crypto map outside_map 60 set transform-set ESP-AES-256-SHA
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map interface outside
crypto map outisde_map 60 match address 200
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
crypto isakmp policy 30
authentication pre-share
encryption aes-256
hash sha
group 5
lifetime 86400
crypto isakmp nat-traversal  20
telnet 192.168.0.0 255.255.255.0 inside
telnet timeout 25
ssh timeout 5
console timeout 0
dhcpd dns 208.67.222.222 208.67.220.220
!
dhcpd address 192.168.0.100-192.168.0.150 inside
dhcpd enable inside
!

!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
inspect dns preset_dns_map
inspect ftp
!
service-policy global_policy global
ntp server 206.222.28.90 source outside prefer
group-policy RemoteUsers internal
group-policy RemoteUsers attributes
dns-server value 208.180.***.***
vpn-tunnel-protocol IPSec
split-tunnel-policy tunnelspecified
split-tunnel-network-list value RemoteUsers_splitTunnelAcl
username R** password AdzoKoVqAmGp encrypted
username R* password S/bzE3RMkUoc encrypted
username M* password J7Ppdjqxjjk3 encrypted
username f* password csIsijKNyYcX4 encrypted
username C* password TL2aP/FWWuBP encrypted
username R* password 0WeEfKQau1Ee6RNi encrypted
tunnel-group RemoteUsers type ipsec-ra
tunnel-group RemoteUsers general-attributes
address-pool Users
default-group-policy RemoteUsers
tunnel-group RemoteUsers ipsec-attributes
pre-shared-key *
tunnel-group 66.76.***.*** type ipsec-l2l
tunnel-group 66.76.***.*** ipsec-attributes
pre-shared-key *

Solution:

It is unusual that it is working with the above nonat statement, as it is incorrect.
If you are have intermittent issues, then you need to make the config stable. But the old addage  “if it ain’t broke don’t fix it” can also apply.

vpn ip pools handed to remote clients should always be on different subnet for routing to occur properly. Sometimes client ip pools on the same subnet work fine, and if that’s the case then leave it. But the recommended practice is a differnet subnet