I have an ASA5505 running ASA 8.3(1) and ASDM 7.1(1). I have a remote access VPN set up and the remote access users are able to log in and access LAN resources. I can ping the VPN peers from the remote LAN. My problem that the VPN peers cannot ping (RDP, ectc..) each other. Pinging one VPN peer from another reveals the following error in the ASA Log.
Asymmetric NAT rules matched for forward and reverse flows; Connection for icmp src outside:10.10.10.8 dst outside:10.10.10.9 (type 8, code 0) denied due to NAT reverse path failure.
Below is my ASA running-config:
ASA Version 8.3(1)
!
hostname ciscoasa
domain-name dental.local
enable password 9ddwXcOYB3k84G8Q encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address dhcp setroute
!
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
!
ftp mode passive
clock timezone CST -6
clock summer-time CDT recurring
dns domain-lookup inside
dns server-group DefaultDNS
name-server 192.168.1.128
domain-name dental.local
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
object network obj_any
subnet 0.0.0.0 0.0.0.0
object network RAVPN
subnet 10.10.10.0 255.255.255.0
object network NETWORK_OBJ_10.10.10.0_28
subnet 10.10.10.0 255.255.255.240
object network NETWORK_OBJ_192.168.1.0_24
subnet 192.168.1.0 255.255.255.0
access-list Local_LAN_Access remark VPN client local LAN access
access-list Local_LAN_Access standard permit host 0.0.0.0
access-list DefaultRAGroup_splitTunnelAcl standard permit 192.168.1.0 255.255.255.0
access-list VpnPeers remark allow vpn peers to ping each other
access-list VpnPeers extended permit ip object NETWORK_OBJ_10.10.10.0_28 object NETWORK_OBJ_10.10.10.0_28
pager lines 24
logging enable
logging asdm informational
logging mail informational
logging from-address wketchel@gmail.com
logging recipient-address wketchel@gmail.com level informational
logging rate-limit 1 600 level 6
mtu outside 1500
mtu inside 1500
ip local pool VPNPool 10.10.10.5-10.10.10.10 mask 255.255.255.0
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-711.bin
no asdm history enable
arp timeout 14400
nat (inside,any) source static any any destination static RAVPN RAVPN
nat (inside,outside) source static NETWORK_OBJ_192.168.1.0_24 NETWORK_OBJ_192.168.1.0_24 destination static NETWORK_OBJ_10.10.10.0_28 NETWORK_OBJ_10.10.10.0_28
nat (inside,outside) source static any any destination static NETWORK_OBJ_10.10.10.0_28 NETWORK_OBJ_10.10.10.0_28
!
object network obj_any
nat (inside,outside) dynamic interface
object network RAVPN
nat (any,outside) dynamic interface
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 sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community *****
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac
crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac
crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac
crypto ipsec transform-set ESP-AES-128-SHA-TRANS esp-aes esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-SHA-TRANS mode transport
crypto ipsec transform-set ESP-DES-SHA-TRANS esp-des esp-sha-hmac
crypto ipsec transform-set ESP-DES-SHA-TRANS mode transport
crypto ipsec transform-set ESP-AES-192-SHA-TRANS esp-aes-192 esp-sha-hmac
crypto ipsec transform-set ESP-AES-192-SHA-TRANS mode transport
crypto ipsec transform-set ESP-AES-256-SHA-TRANS esp-aes-256 esp-sha-hmac
crypto ipsec transform-set ESP-AES-256-SHA-TRANS mode transport
crypto ipsec transform-set ESP-3DES-SHA-TRANS esp-3des esp-sha-hmac
crypto ipsec transform-set ESP-3DES-SHA-TRANS mode transport
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set transform-set ESP-AES-128-SHA ESP-AES-192-SHA ESP-AES-256-SHA ESP-3DES-SHA ESP-DES-SHA ESP-AES-128-SHA-TRANS ESP-AES-192-SHA-TRANS ESP-AES-256-SHA-TRANS ESP-3DES-SHA-TRANS ESP-DES-SHA-TRANS
crypto map outside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto map outside_map interface outside
crypto ca trustpoint LOCAL-CA-SERVER
keypair LOCAL-CA-SERVER
crl configure
crypto ca trustpoint ASDM_TrustPoint0
enrollment self
subject-name CN=ciscoasa
keypair billvpnkey
proxy-ldc-issuer
crl configure
crypto ca server
cdp-url http://ciscoasa/+CSCOCA+/asa_ca.crl
issuer-name CN=ciscoasa
smtp from-address admin@ciscoasa
crypto ca certificate chain LOCAL-CA-SERVER
certificate ca 01
**hidden**
quit
crypto ca certificate chain ASDM_TrustPoint0
certificate 10bdec50
**hidden**
quit
crypto isakmp enable outside
crypto isakmp policy 10
authentication crack
encryption aes-256
hash sha
group 2
lifetime 86400
crypto isakmp policy 20
authentication rsa-sig
encryption aes-256
hash sha
group 2
lifetime 86400
crypto isakmp policy 30
authentication pre-share
encryption aes-256
hash sha
group 2
lifetime 86400
crypto isakmp policy 40
authentication crack
encryption aes-192
hash sha
group 2
lifetime 86400
crypto isakmp policy 50
authentication rsa-sig
encryption aes-192
hash sha
group 2
lifetime 86400
crypto isakmp policy 60
authentication pre-share
encryption aes-192
hash sha
group 2
lifetime 86400
crypto isakmp policy 70
authentication crack
encryption aes
hash sha
group 2
lifetime 86400
crypto isakmp policy 80
authentication rsa-sig
encryption aes
hash sha
group 2
lifetime 86400
crypto isakmp policy 90
authentication pre-share
encryption aes
hash sha
group 2
lifetime 86400
crypto isakmp policy 100
authentication crack
encryption 3des
hash sha
group 2
lifetime 86400
crypto isakmp policy 110
authentication rsa-sig
encryption 3des
hash sha
group 2
lifetime 86400
crypto isakmp policy 120
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
crypto isakmp policy 130
authentication crack
encryption des
hash sha
group 2
lifetime 86400
crypto isakmp policy 140
authentication rsa-sig
encryption des
hash sha
group 2
lifetime 86400
crypto isakmp policy 150
authentication pre-share
encryption des
hash sha
group 2
lifetime 86400
client-update enable
telnet 192.168.1.1 255.255.255.255 inside
telnet timeout 5
ssh timeout 5
console timeout 0
management-access inside
dhcpd auto_config outside
!
dhcpd address 192.168.1.50-192.168.1.99 inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics
threat-detection statistics tcp-intercept rate-interval 30 burst-rate 400 average-rate 200
ssl trust-point ASDM_TrustPoint0 outside
webvpn
enable outside
svc image disk0:/anyconnect-win-3.1.04072-k9.pkg 1
svc profiles DellStudioClientProfile disk0:/dellstudioclientprofile.xml
svc enable
tunnel-group-list enable
internal-password enable
smart-tunnel list SmartTunnelList RDP mstsc.exe platform windows
group-policy DefaultRAGroup internal
group-policy DefaultRAGroup attributes
dns-server value 192.168.1.128
vpn-tunnel-protocol l2tp-ipsec
split-tunnel-policy tunnelspecified
split-tunnel-network-list value DefaultRAGroup_splitTunnelAcl
default-domain value dental.local
webvpn
svc modules value vpngina
group-policy DefaultRAGroup_1 internal
group-policy DefaultRAGroup_1 attributes
dns-server value 192.168.1.128
vpn-tunnel-protocol l2tp-ipsec
default-domain value dental.local
group-policy DfltGrpPolicy attributes
dns-server value 192.168.1.128
vpn-simultaneous-logins 4
vpn-tunnel-protocol IPSec l2tp-ipsec svc webvpn
group-lock value RAVPN
split-tunnel-network-list value Local_LAN_Access
default-domain value dental.local
webvpn
url-list value DentalMarks
svc modules value vpngina
svc profiles value dellstudio type user
svc ask enable default webvpn
smart-tunnel enable SmartTunnelList
username wketchel1 password 5c5OoeNtCiX6lGih encrypted
username wketchel1 attributes
vpn-group-policy DfltGrpPolicy
webvpn
svc profiles value DellStudioClientProfile type user
username wketchel password 5c5OoeNtCiX6lGih encrypted privilege 15
username wketchel attributes
vpn-group-policy DfltGrpPolicy
webvpn
svc modules none
svc profiles value DellStudioClientProfile type user
username jenniferk password 5.TcqIFN/4yw0Vq1 encrypted privilege 0
username jenniferk attributes
vpn-group-policy DfltGrpPolicy
webvpn
svc profiles value DellStudioClientProfile type user
tunnel-group DefaultRAGroup general-attributes
address-pool VPNPool
authorization-server-group LOCAL
tunnel-group DefaultRAGroup ipsec-attributes
pre-shared-key *****
tunnel-group DefaultRAGroup ppp-attributes
authentication pap
authentication ms-chap-v2
authentication eap-proxy
tunnel-group RAVPN type remote-access
tunnel-group RAVPN general-attributes
address-pool VPNPool
authorization-server-group LOCAL
tunnel-group RAVPN webvpn-attributes
group-alias RAVPN enable
tunnel-group RAVPN ipsec-attributes
pre-shared-key *****
tunnel-group RAVPN ppp-attributes
authentication pap
authentication ms-chap-v2
authentication eap-proxy
tunnel-group WebSSLVPN type remote-access
tunnel-group WebSSLVPN webvpn-attributes
group-alias WebSSLVPN enable
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum client auto
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
inspect esmtp
inspect sqlnet
inspect skinny
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
inspect ip-options
!
service-policy global_policy global
smtp-server 173.194.64.108
prompt hostname context
hpm topN enable
Cryptochecksum:3304bf6dcf6af5804a21e9024da3a6f8
: end
