Exclude 1 host (IP Address) from VPN Tunnel
Hi Experts,
May I ask your help on this?
Current setup:
L2L VPN between site1 and site2
[site1]--------------------[internet]-------------------[site2]
10.0.100.0/24-----------------------------10.0.1.0/24
Planned setup:
L2L VPN between site1 and site2
[site1]--------------------[internet]-------------------[site2]
10.0.100.0/24-----------------------------10.0.1.0/24
with 1 host (10.0.100.50) excluded on the NAT Process for Site-to-site VPN thus NATting him directly to the internet.
Has someone done this before?
I'm planning to add 10.0.100.50 to be denied on the access-list from the VPN Traffic.
Dunno if that will work though.
Hope someone could give their thoughts on this.
Thank you.
Regards,
Jem
Hi,
I would imagine that it would be the easiest to simply block this hosts traffic towards the remote site in the interface ACL of this hosts local firewall/vpn device rather than doing this with NAT.
I am not sure what software level you are running and what devices you are using.
If I dont remember wrong, I think you could use "deny" statements in the 8.2 (and below) software levels which would essentially ignore the NAT0 for some hosts while do it for others.
Something like
access-list INSIDE-NAT0 deny ip host 10.0.100.50 10.0.1.0 255.255.255.0
access-list INSIDE-NAT0 permit ip 10.0.100.0 255.255.255.0 10.0.1.0 255.255.255.0
nat (inside) 0 access-list INSIDE-NAT0
The above is just an example.
I dont think this is even possible in the newer 8.3 (and above) software levels as they dont use ACLs for NAT rules anymore.
But again, if limiting access is your aim I would suggest using interface ACL
- Jouni
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30820229 30820192 A0030201 02020101 300D0609 2A864886 F70D0101 05050030
30312E30 2C060355 04031325 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 35383033 38313339 34301E17 0D313430 35323231 38323333
365A170D 32303031 30313030 30303030 5A303031 2E302C06 03550403 1325494F
532D5365 6C662D53 69676E65 642D4365 72746966 69636174 652D3538 30333831
33393430 819F300D 06092A86 4886F70D 01010105 0003818D 00308189 02818100
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173F23C4 FF34D160 202A7565 4A1CE08B 60B3ADAE 6E19EE6E 9CD39E72 71F9650E
930F22FE C4441F9C 2D7DD420 71F75DFC 3CCAC94E BA304685 E0E62658 A3E8D01C
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02030100 01A35330 51300F06 03551D13 0101FF04 05300301 01FF301F 0603551D
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4886F70D 01010505 00038181 00771667 FCA66002 8AB9E5FB F210012F C50B586F
9A9640BB 45B4CEFD 030A38C0 E610AAC8 B41EF3C4 E55810F9 B2C727CF C1DEFCF1
0846E7BC 1D95420E 5DADB5F8 EFE7EB37 B5433B80 4FF787D4 B1F2A527 06F065A4
00522E97 A9D2335C E83C4AE1 E68D7A41 9D0046A7 ADCC282B 7527F84D E71CC567
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: Saved
: Written by enable_15 at 15:34:23.899 UTC Sat Mar 3 2012
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hostname officeasa
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crypto ipsec security-association lifetime kilobytes 4608000
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authentication pre-share
encryption 3des
hash sha
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split-tunnel-policy tunnelspecified
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address-pools value ormtIPP
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svc rekey time 30
svc rekey method ssl
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username user1 attributes
service-type remote-access
tunnel-group ormtProfile type remote-access
tunnel-group ormtProfile general-attributes
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message-length maximum 512
policy-map global_policy
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inspect ftp
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
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inspect sqlnet
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inspect sunrpc
inspect xdmcp
inspect sip
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inspect tftp
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prompt hostname context
no call-home reporting anonymous
Cryptochecksum:46d5c2e1ac91d73293f2fb1a0045180c
officeasa(config)#
Site-B:
Home ASA Configuration:
homeasa# sh config
: Saved
: Written by enable_15 at 15:48:42.479 UTC Sat Mar 3 2012
ASA Version 8.2(5)
hostname homeasa
enable password xyz encrypted
passwd xyz encrypted
names
interface Ethernet0/0
switchport access vlan 2
interface Ethernet0/1
switchport access vlan 3
interface Ethernet0/2
switchport access vlan 3
interface Ethernet0/3
switchport access vlan 3
interface Ethernet0/4
switchport access vlan 3
interface Ethernet0/5
switchport access vlan 3
interface Ethernet0/6
switchport access vlan 3
interface Ethernet0/7
switchport access vlan 3
interface Vlan2
nameif outside
security-level 0
ip address dhcp setroute
interface Vlan3
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same-security-traffic permit inter-interface
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access-list NONAT extended permit ip 10.10.6.0 255.255.255.0 10.10.5.0 255.255.255.0
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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
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 10.10.6.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set Site2Site esp-3des esp-sha-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto map L2Lmap 1 match address Crypto_L2L
crypto map L2Lmap 1 set peer 96.xxx.xxx.118
crypto map L2Lmap 1 set transform-set Site2Site
crypto map L2LMap 1 set pfs
crypto map L2LMap interface outside
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
dhcpd address 10.10.6.101-10.10.6.132 inside
dhcpd dns 8.8.8.8 8.8.4.4 interface inside
dhcpd enable inside
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
enable outside
svc image disk0:/anyconnect-win-2.4.1012-k9.pkg 1
svc image disk0:/anyconnect-macosx-i386-2.4.1012-k9.pkg 2
svc enable
tunnel-group-list enable
group-policy hrmtGP internal
group-policy hrmtGP attributes
dns-server value 8.8.8.8
vpn-tunnel-protocol svc webvpn
split-tunnel-policy tunnelspecified
split-tunnel-network-list value hrmtST
address-pools value hrmtIPP
webvpn
svc keep-installer installed
svc rekey time 30
svc rekey method ssl
svc ask enable default svc timeout 20
username user1 password abcxyz encrypted
username user1 attributes
service-type admin
tunnel-group hrmtProfile type remote-access
tunnel-group hrmtProfile general-attributes
default-group-policy hrmtGP
tunnel-group hrmtProfile webvpn-attributes
group-alias hrmtCGA enable
tunnel-group 96.xxx.xxx.118 type ipsec-l2l
tunnel-group 96.xxx.xxx.118 ipsec-attributes
pre-shared-key *
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
prompt hostname context
no call-home reporting anonymous
Cryptochecksum:d16a0d49f275612dff7e404f49bcc499
homeasa#Thanks Rizwan,
Still no luck. I can't even ping the otherside (office).. I am not sure if i'm running the debug rightway. Here are my results...
homeasa(config)# ping inside 10.10.5.254............. (Office CIsco ASA5505 IP on local side. I also tried pinging the server on other side (office) whic is @10.10.5.10 and got the same result)
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.5.254, timeout is 2 seconds:
Success rate is 0
homeasa(config)# debug crypto isakmp 7
homeasa(config)# debug crypto ipsec 7
homeasa(config)# sho crypto isakmp 7
^
ERROR: % Invalid input detected at '^' marker.
homeasa(config)# sho crypto isakmp
There are no isakmp sas
Global IKE Statistics
Active Tunnels: 0
Previous Tunnels: 0
In Octets: 0
In Packets: 0
In Drop Packets: 0
In Notifys: 0
In P2 Exchanges: 0
In P2 Exchange Invalids: 0
In P2 Exchange Rejects: 0
In P2 Sa Delete Requests: 0
Out Octets: 0
Out Packets: 0
Out Drop Packets: 0
Out Notifys: 0
Out P2 Exchanges: 0
Out P2 Exchange Invalids: 0
Out P2 Exchange Rejects: 0
Out P2 Sa Delete Requests: 0
Initiator Tunnels: 0
Initiator Fails: 0
Responder Fails: 0
System Capacity Fails: 0
Auth Fails: 0
Decrypt Fails: 0
Hash Valid Fails: 0
No Sa Fails: 0
Global IPSec over TCP Statistics
Embryonic connections: 0
Active connections: 0
Previous connections: 0
Inbound packets: 0
Inbound dropped packets: 0
Outbound packets: 0
Outbound dropped packets: 0
RST packets: 0
Recevied ACK heart-beat packets: 0
Bad headers: 0
Bad trailers: 0
Timer failures: 0
Checksum errors: 0
Internal errors: 0
hjnavasa(config)# sh crypto ipsec sa peer 96.xxx.xxx.118
There are no ipsec sas
homeasa(config)# -
Unable to access/lan2lan ping from VPN Fortigate to Cisco ASA 5505
Problem : Unable to access user A to user B
User A --- router A (122, fortigate 80c) --- (Site to Site VPN between fortigate & cisco asa) --- router B (93, cisco Asa 5505{in front asa got cisco800[81] before to internet} ) --- User B
After using wizard to configure the cisco ASA site to site VPN, the site-to-site tunnel is up.
Ping is unsuccessful from user A to user B
Ping is successful from user B to user A, data is accessable
After done the packet tracer from user A to user B,
Result :
Flow-lookup
Action : allow
Info: Found no matching flow, creating a new flow
Route-lookup
Action : allow
Info : 192.168.5.203 255.255.255.255 identity
Access-list
Action : drop
Config Implicit Rule
Result - The packet is dropped
Input Interface : inside
Output Interface : NP Identify Ifc
Info: (acl-drop)flow is denied by configured rule
Below is Cisco ASA 5505's show running-config
ASA Version 8.2(1)
hostname Asite
domain-name ssms1.com
enable password ZZZZ encrypted
passwd WWWW encrypted
names
name 82 B-firewall description Singapore office firewall
name 192.168.1.0 B-inside-subnet description Singapore office internal LAN IP
name 192.168.200.0 A-inside-VLAN12 description A-inside-VLAN12 (fortinet)
name 192.168.2.0 fw-inside-subnet description A office internal LAN IP
name 122 A-forti
interface Vlan1
nameif inside
security-level 100
ip address 192.168.5.203 255.255.255.0
interface Vlan2
nameif outside
security-level 0
ip address 93 255.255.255.240
interface Ethernet0/0
switchport access vlan 2
interface Ethernet0/7
ftp mode passive
dns server-group DefaultDNS
domain-name ssms1.com
object-group network obj_any
network-object 0.0.0.0 0.0.0.0
access-list inside_nat0_outbound extended permit ip any 80 255.255.255.240
access-list inside_nat0_outbound extended permit ip fw-inside-subnet 255.255.255.0 B-inside-subnet 255.255.255.0
access-list inside_nat0_outbound extended permit ip 192.168.5.0 255.255.255.0 A-inside-VLAN12 255.255.255.0
access-list outside_cryptomap extended permit ip fw-inside-subnet 255.255.255.0 B-inside-subnet 255.255.255.0
access-list Outside_nat-inbound extended permit ip A-inside-VLAN12 255.255.255.0 192.168.5.0 255.255.255.0
access-list Outside_nat-inbound extended permit ip host A-forti 192.168.5.0 255.255.255.0
access-list outside_1_cryptomap extended permit ip 192.168.5.0 255.255.255.0 A-inside-VLAN12 255.255.255.0
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-631.bin
no asdm history enable
arp timeout 14400
global (outside) 101 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 101 0.0.0.0 0.0.0.0
route outside 0.0.0.0 0.0.0.0 81 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 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 B-inside-subnet 255.255.255.0 inside
http fw-inside-subnet 255.255.255.0 inside
http 0.0.0.0 255.255.255.255 outside
http 0.0.0.0 0.0.0.0 outside
http 192.168.5.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
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-DES-MD5 esp-des 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-192-MD5 esp-aes-192 esp-md5-hmac
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto map outside_map 1 match address outside_1_cryptomap
crypto map outside_map 1 set pfs
crypto map outside_map 1 set peer A-forti
crypto map outside_map 1 set transform-set ESP-3DES-SHA
crypto map outside_map 2 match address outside_cryptomap
crypto map outside_map 2 set peer B-firewall
crypto map outside_map 2 set transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA ESP-3DES-MD5 ESP-DES-SHA ESP-DES-MD5
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
crypto isakmp policy 20
authentication pre-share
encryption aes-192
hash md5
group 2
lifetime 86400
crypto isakmp policy 30
authentication pre-share
encryption aes-256
hash md5
group 2
lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
dhcpd address 192.168.5.10-192.168.5.20 inside
dhcpd dns 165 165 interface inside
dhcpd enable inside
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
group-policy DfltGrpPolicy attributes
vpn-tunnel-protocol IPSec l2tp-ipsec svc webvpn
username admin password XXX encrypted privilege 15
tunnel-group 122 type ipsec-l2l
tunnel-group 122 ipsec-attributes
pre-shared-key *
class-map inspection_default
match default-inspection-traffic
class-map outside-class
match default-inspection-traffic
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
message-length maximum client auto
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 icmp
policy-map outside-policy
description ok
class outside-class
inspect dns
inspect esmtp
inspect ftp
inspect h323 h225
inspect h323 ras
inspect icmp
inspect icmp error
inspect netbios
inspect rsh
inspect rtsp
inspect sip
inspect skinny
inspect sqlnet
inspect sunrpc
inspect tftp
inspect xdmcp
service-policy global_policy global
service-policy outside-policy interface outside
prompt hostname context
Cryptochecksum: XXX
: end
Kindly need your expertise&help to solve the problemany1 can help me ?
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