Clarification of the ASA NAT

Hi all

Please I need to be clear on one point:

static (Inside, Outside) 10.10.10.1 11.11.11.1 netmask 255.255.255.0

the same thing that

static (Outside, Inside) 11.11.11.1 10.10.10.1 netmask 255.255.255.0?

No, they are not same. The order of a static NAT device is:

static (real_interface,mapped_interface) mapped_ip real_ip netmask mask

What you do is: static (network more secure, less secure network). If you can do one of these:

static (DMZ, Outside) etc.

static (Inside, DMZ) etc.

static (Inside, Outside) etc.

If your case you should do: static (inside address, external) 100.100.100.100 192.168.10.1 netmask 255.255.255.255

This external address 100.100.100.100 inside NAT will address 192.168.10.1.

HTH

Tags: Cisco Security

Similar Questions

The ASA to use a different Port SSH

Please let me know if you have heard of this

Thank you

Dave

Dave,

According to my knowledge the ASA does not support this. Anthony we have a device before the ASA natting redirect some ther port at 22 of the SAA.

I hope this helps.

Kind regards

SOM

PS: Please check the issue as resolved if it is answered. Note the useful messages. Thank you.

CSCue51351 - ASA NAT huge config causes traceback because of the unbalanced tree p3

Hi experts ASA

CSCue51351 - ASA NAT huge config causes traceback because of the unbalanced tree p3

I want to know that how huge?

Below, this Condition of DDT is SSP60.

----------------------

Symptom:

Version 9 8.4 (4) current ASA code can generate a traceback with thread name: DATAPATH-7-2315 and reload.

Conditions:

Seen on ASA5585-SSP-60 running in the failover environment.

Workaround solution:

None

----------------------

SSP60 can perform up to 10 000 000 simultaneous sessions.

It's more than 10 000 000 simultaneous sessions?

Kind regards.

Word

Hello Word,

This flaw does not affect the number of concurrent sessions.

Instead, this fault comes to play if you have a large number of statements NAT or ACL (say 25 k +) which you change and at the same time the unit treats a large number of new connections per second (say 20 k +), what then is there the possibility of hitting this issue.

Sincerely,

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two DMVPN rays behind the ASA made hide NAT for Internet

This scenario requires that the particular configuration of the ASA? Until now, the installation program does not work, we face the following problem:

The nodal point DMVPN shows an error "invalid SPI", because the two rays to come with the same IP address (ASA hide-NAT) to the DMVPN hub.

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Problems of NAT with AnyConnect and 8.3 of the ASA

I have set up on an ASA 8.3 AnyConnect. I'm properly connect and pulling an IP from the pool that I created. The problem I have is that I'm quite see "receive" packets in the AnyConnect details. I know about the ASA 8.2 and earlier you would use a "waiver" NAT to do the translation of the identity. How is what is done with 8.3 and later?

Within 8.3 and later networks are defined as objects using groups of objects. Then, these groups of objects are referenced in the NAT statement to define both pre and post NAT (real / mapped) addresses.

network of the LOCAL_LAN object
Subnet 192.168.0.0 255.255.0.0

network of the REMOTE_LAN object
subnet 172.16.0.0 255.255.0.0

NAT static LOCAL_LAN LOCAL_LAN destination (indoor, outdoor) static source REMOTE_LAN REMOTE_LAN

Clarification of the NAT rules

Hi all

I understand the notion of NAT and why it is used. However, I am a little confused given the following command:
```
object network obj-internal
```
```
nat (inside,outside) dynamic interface
```
Please correct me if I'm wrong, but until now, I understand that this command creates a network called "obj-internal" object and creates a rule for traffic from the interface inside of the external interface. However, I'm confused with the dynamic interface part. Could someone please elaborate more on the meaning and usage of this part? Any help is greatly appreciated.

To create an object you also a definition of what is this object. You also need somethng as a host or a subnet statement.

For this object that you want to specify how to resolve the internal IP address (inside the network) are translated when communicating with the external network. The NAT command in your example uses a dynamic conversion (unlike the static NAT which is generally used for outside - inside the traffic, or when an inside host should always get the same IP address to the outside) who always uses external IP of the SAA. So no matter what internal host communicates with the outside world, they all appear with a single IP address on the destination system.

--
Don't stop once you have upgraded your network! Improve the world by lending money to low-income workers:
http://www.Kiva.org/invitedBy/karsteni

Seeking clarification on the SFD in AKM Brushless Servo Drives

Dear members,

I'm looking for clarification on the smart feedback device (SFD) installed in the series of servomotors AKM. There is little information available on this subject in the specifications. It appeared that it offers a very high resolution, information on the position of the rotor high precision signals.

1. how exactly is the PCG provides the position of the rotor?

2. is there a provision to contract low resolution effect Hall of EPD type feedback?

Thank you.

Ansari07

Hi Ansari07,

I don't think that this level of control is possible with the AKD. The reader is supposed to close its own current loop on board for the control of switching and outputs of phase. The AKD offer couple, speed or modes of control position, and you can talk to it by Ethernet on the service port, via a field such as EtherCAT or CANOpen bus, or with an analogue signal +-10V or step/dir commands.

I don't think you can get around all of the internal firmware in the AKD and get direct control of how current passes through the phases.

Best regards

Nate

No access to the interface of the ASA by behind the other is

Hello

I am faced with the issue of not being able to access the interface of "dmz" behind the interface 'internet '.

Here is a brief description of the topology:

List entry on the internet access "," allows for 1xx.xxx.172.1 traffic.

No nat is configured between these interfaces.

The routing is OK because hosts on the DMZ network are accessible from the Internet.

The software version is 9.1 (3).

Security level of the interfaces is the same.

Security-same interface inter traffic is allowed.

Here's what packet trace says:

tracer # package - entry internet udp 7x.xxx.224.140 30467 1xx.xxx.172.1 det 500

Phase: 1
Type:-ROUTE SEARCH
Subtype: entry
Result: ALLOW
Config:
Additional information:
identity of the 255.255.255.255 1xx.xxx.172.1

Phase: 2
Type:-ROUTE SEARCH
Subtype: entry
Result: ALLOW
Config:
Additional information:
identity of the 255.255.255.255 1xx.xxx.172.1

Result:
input interface: internet
entry status: to the top
entry-line-status: to the top
the output interface: NP identity Ifc
the status of the output: to the top
output-line-status: to the top
Action: drop
Drop-reason: (headwall) No. road to host

Please help me find the cause why asa is unable to find the path to its own interface.

Thank you in advance.

Hello

You will not be able to connect to an IP address of an interface ASA behind another ASA interface. It is a limit that has been there for Cisco firewalls as long as I can remember.

The only exception is when you have a VPN connection that is connected to an ASA interface, then you can connect through this VPN connection to another interface of the ASA. In this case the ASA will also require that you have the following command

access to the administration

Where is the name of the interface to which you are connected.

-Jouni

The ASA VPN help

Hello

The ASA is not my strong point. I had to make some changes to my ASA clients when the provider has changed. The ASA has been NAT would be an NTU gave us the previous provider, the new provider of the SAA is NAT had a modem. The only thing that does not work right is the VPN.

When IPSec VPN connects we cannot ping, telnet/ssh or RDP to one of imagine. My guess is that the ACL are not quite right. Could someone take a look at the config and propose something?

WAN - ASA - LAN (192.168.20.x)

I deleted the names of user and password and changed the public IP address around security.

ASA # sh run
: Saved
:
ASA Version 8.2 (5)
!
host name asa
domain afpo.local
activate the encrypted password of JCdTyvBk.ia9GKSj
d/TIM/v60pVIbiEg encrypted passwd
names of
!
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
!
interface Vlan1
nameif inside
security-level 100
address 192.168.20.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
PPPoE client vpdn group idnet
IP address pppoe setroute
!
banner exec *****************************************************
exec banner * SCP backup enabled *.
exec banner * SYSLOG enabled *.
banner exec *****************************************************
passive FTP mode
clock timezone GMT/UTC 0
summer time clock GMT/BDT recurring last Sun Mar 01:00 last Sun Oct 02:00
DNS lookup field inside
DNS server-group DefaultDNS
Server name 192.168.20.201
domain afpo.local
permit same-security-traffic intra-interface
object-group network GFI-SERVERS
object-network 5.11.77.0 255.255.255.0
object-network 93.57.176.0 255.255.255.0
object-network 94.186.192.0 255.255.255.0
object-network 184.36.144.0 255.255.255.0
network-object 192.67.16.0 255.255.252.0
object-network 208.43.37.0 255.255.255.0
network-object 228.70.81.0 255.255.252.0
network-object 98.98.51.176 255.255.255.240
allowed extended INCOMING tcp access list any interface outside eq https inactive
allowed extended INCOMING tcp access list any interface outside eq 987
interface of access inactive list allowed extended object-group GFI SERVERS off eq smtp tcp INBOUND
interface to access extended permitted list INCOMING tcp object-group GFI SERVERS off eq ldaps
access-list SHEEP extended ip 192.168.20.0 allow 255.255.255.0 10.0.0.0 255.255.0.0
access-list SHEEP extended ip 192.168.20.0 allow 255.255.255.0 172.16.0.0 255.255.255.0
access-list SHEEP extended ip 192.168.20.0 allow 255.255.255.0 172.16.0.0 255.255.255.128
IP 10.71.79.0 allow Access - list extended RITM 255.255.255.0 10.0.0.0 255.255.0.0
CLIENT_VPN list of allowed ip extended access any 172.16.0.0 255.255.255.128
Standard access list SPLIT_TUNNEL allow 10.71.79.0 255.255.255.0
Standard access list TSadmin_splitTunnelAcl allow 10.71.79.0 255.255.255.0
pager lines 24
Enable logging
logging trap information
asdm of logging of information
host of logging inside the 10.71.79.2
Within 1500 MTU
Outside 1500 MTU
local pool CLIENT_VPN_POOL 172.16.0.1 - 172.16.0.126 255.255.255.128 IP mask
local pool SSL_VPN_POOL 172.16.0.129 - 172.16.0.254 255.255.255.128 IP mask
IP verify reverse path to the outside interface
IP audit attack alarm drop action
ICMP unreachable rate-limit 1 burst-size 1
ICMP allow 10.71.79.0 255.255.255.0 echo inside
ICMP allow any inside
ICMP allow any inaccessible outside
ICMP allow 86.84.144.144 255.255.255.240 echo outside
ICMP allow all outside
ASDM image disk0: / asdm - 645.bin
enable ASDM history
ARP timeout 14400
NAT-control
Global 1 interface (outside)
NAT (inside) 0 access-list SHEEP
NAT (inside) 1 192.168.20.0 255.255.255.0
public static tcp (indoor, outdoor) interface smtp 10.71.79.2 smtp netmask 255.255.255.255
public static tcp (indoor, outdoor) interface https 10.71.79.2 https netmask 255.255.255.255
public static tcp (indoor, outdoor) interface 987 10.71.79.2 987 netmask 255.255.255.255
public static tcp (indoor, outdoor) interface ldaps 10.71.79.2 ldaps netmask 255.255.255.255
Access-group ENTERING into the interface outside
Timeout xlate 03:00
Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00
Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-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
Floating conn timeout 0:00:00
dynamic-access-policy-registration DfltAccessPolicy
RADIUS protocol AAA-server Serveur_RADIUS
AAA-server host 10.71.79.2 Serveur_RADIUS (inside)
key *.
RADIUS-common-pw *.
not compatible mschapv2
the ssh LOCAL console AAA authentication
Enable http server
Server of http session-timeout 60
http 0.0.0.0 0.0.0.0 inside
http 87.84.164.144 255.255.255.240 outside
No snmp server location
No snmp Server contact
Server enable SNMP traps snmp authentication linkup, linkdown cold start
resetinbound of service inside interface
resetinbound of the outside service interface
Service resetoutside
Crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
Crypto ipsec transform-set ESP-DES-SHA esp - esp-sha-hmac
Crypto ipsec transform-set ESP-DES-MD5 esp - 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 256 - aes - esp esp-sha-hmac
Crypto ipsec transform-set ESP-AES-128-SHA aes - esp 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-SHA-ESP-3DES-3des esp-sha-hmac
life crypto ipsec security association seconds 28800
Crypto ipsec kilobytes of life - safety 4608000 association
address DYN_CLIENT_VPN 10 of the crypto dynamic-map CLIENT_VPN
Crypto dynamic-map DYN_CLIENT_VPN 10 the value transform-set ESP-AES-256-SHA ESP-3DES-MD5
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 pfs Group1 set
Crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 value 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 MD5-ESP-3DES ESP-DES-SHA ESP-DES-MD5
crypto IPSEC_VPN 10 card matches the address RITM
card crypto IPSEC_VPN 10 set peer 88.98.52.177
card crypto IPSEC_VPN 10 the value transform-set ESP-AES-256-SHA ESP-3DES-MD5
card crypto IPSEC_VPN 100-isakmp dynamic ipsec DYN_CLIENT_VPN
card crypto IPSEC_VPN 65535-isakmp dynamic ipsec SYSTEM_DEFAULT_CRYPTO_MAP
IPSEC_VPN interface card crypto outside
crypto ISAKMP allow outside
crypto ISAKMP policy 10
preshared authentication
aes-256 encryption
sha hash
Group 5
life 86400
crypto ISAKMP policy 20
preshared authentication
aes-192 encryption
sha hash
Group 5
life 86400
crypto ISAKMP policy 30
preshared authentication
aes encryption
sha hash
Group 5
life 86400
crypto ISAKMP policy 40
preshared authentication
3des encryption
sha hash
Group 2
life 86400
Telnet timeout 5
SSH enable ibou
SSH 0.0.0.0 0.0.0.0 inside
SSH 88.98.52.176 255.255.255.240 outside
SSH 175.171.144.58 255.255.255.255 outside
SSH 89.187.81.30 255.255.255.255 outside
SSH timeout 60
SSH version 2
Console timeout 30
management-access inside
VPDN group idnet request dialout pppoe
VPDN group idnet localname
VPDN group idnet ppp authentication chap
VPDN username password *.

a basic threat threat detection
scanning-threat shun except ip 10.0.0.0 address threat detection 255.255.0.0
scanning-threat time shun 360 threat detection
threat detection statistics
a statistical threat detection tcp-interception rate-interval 30 burst-400-rate average rate 200
NTP server 130.88.202.49 prefer external source
TFTP server outside 86.84.174.157 /Aberdeen_Fishing_Producers_ (ASA5505) .config
WebVPN
port 4443
allow outside
DTLS port 4443
SVC disk0:/anyconnect-win-2.4.0202-k9.pkg 1 image
SVC disk0:/anyconnect-macosx-i386-2.4.0202-k9.pkg 2 image
Picture disk0:/anyconnect-macosx-powerpc-2.4.0202-k9.pkg 3 SVC
SVC profiles ANYCONNECT_PROFILE disk0: / AnyConnectProfile.xml
enable SVC
attributes of Group Policy DfltGrpPolicy
value of server WINS 10.71.79.2
value of server DNS 10.71.79.2
VPN - 10 concurrent connections
Protocol-tunnel-VPN IPSec svc
enable IP-comp
enable PFS
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list SPLIT_TUNNEL
afpo.local value by default-field
WebVPN
time to generate a new key of SVC 60
SVC generate a new method ssl key
profiles of SVC value ANYCONNECT_PROFILE
SVC request no svc default
internal TSadmin group strategy
Group Policy attributes TSadmin
value of server WINS 10.71.79.2
value of server DNS 10.71.79.2
Protocol-tunnel-VPN IPSec
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list TSadmin_splitTunnelAcl
afpo.local value by default-field
username password backup encrypted qwzcxbPwKZ7WiiEC privilege 15
backup attributes username
type of remote access service
admin Cg9KcOsN6Wl24jnz encrypted privilege 15 password username
attributes of user admin name
type of remote access service
tsadmin encrypted v./oXn.idbhaKhwk privilege 15 password username
R60CY/username password 7AzpFEsR ritm. O encrypted privilege 15
ritm username attributes
type of remote access service
attributes global-tunnel-group DefaultWEBVPNGroup
address SSL_VPN_POOL pool
authentication-server-group LOCAL Serveur_RADIUS
type tunnel-group RemoteVPN remote access
attributes global-tunnel-group RemoteVPN
address CLIENT_VPN_POOL pool
authentication-server-group LOCAL Serveur_RADIUS
IPSec-attributes tunnel-group RemoteVPN
pre-shared key *.
tunnel-group 87.91.52.177 type ipsec-l2l
IPSec-attributes tunnel-group 89.78.52.177
pre-shared key *.
tunnel-group TSadmin type remote access
tunnel-group TSadmin General attributes
address CLIENT_VPN_POOL pool
strategy-group-by default TSadmin
tunnel-group TSadmin ipsec-attributes
pre-shared key *.
!
class-map inspection_default
match default-inspection-traffic
!
!
type of policy-card inspect dns preset_dns_map
parameters
maximum message length automatic of customer
message-length maximum 512
Policy-map global_policy
class inspection_default
inspect the preset_dns_map dns
inspect the ftp
inspect h323 h225
inspect the h323 ras
inspect the rsh
inspect the rtsp
inspect sqlnet
inspect the skinny
inspect sunrpc
inspect xdmcp
inspect the sip
inspect the netbios
inspect the tftp
Review the ip options
inspect the icmp
!
global service-policy global_policy
context of prompt hostname
no remote anonymous reporting call
Cryptochecksum:9ddde99467420daf7c1b8d414dd04cf3
: end
ASA #.

Doug,

The nat will knit from inside to out if the LAN is 192.168.20.0 nat should be like this:

access-list SHEEP extended ip 192.168.20.0 allow 255.255.255.0 172.16.0.129 255.255.255.128

Just to get this clear you use remote VPN, you must add the 192.168.20.0 to split ACL road tunnel:

SPLIT_TUNNEL list standard access allowed 192.168.20.0 255.255.255.0

-JP-

The ASA IPS configuration

Hello

I have a question about the steps for using on IPS on ASA - all using a NAT addresses or configuration of access list for interesting traffic, that I have to use really. Specifically, NAT and the list of access or access and NAT?

Keep the ACL extended near the source and the REAL IP address. NAT occurs within the ASA, then you're dealing with external systems.

If you have 6 or 14 addresses external, public IP by your ISP, you can NAT... otherwise, you're stuck with PAT.

For entrants to the outside: use the real, REAL public IP addresses have been assigned by your service provider in order to allow certain incoming traffic. It could be access list 100 or a list named more extensive access, such as 'inbound-outside '.

For entrants inside the interface: use internal IP address private plan [192.168.x.x, 172.16.x.x - 172.31.255, 10.0.0.0] with appropriate subnet mask to allow traffic from the inside to the outside for your users. Most of the people open the "permit ip any any" here, but I prefer to limit the internal address, specific private only. It could be access list 102 or a named example lsit access 'inbound_inside '.

Traffic, which is not "allowed" will be implicitly denied.

Unable to connect to the ASA vpn Android client

secHello, I have problem with android client. So I've solved many problems and finally could get the PHASE 1 and PHASE 1 COMPLETED messages in newspapers :). In any case, I have a problem different, even if the client of the phase 1 and 2 completed failed to connect again. Here are the logs:

| 21456 | *** | 500 | Built of UDP connection entrants for outdoor 600577524: * / 21456 (* / 21456) identity: * / 500 (* / 500)
| 27262 | *** | 4500 | Built of UDP connection entrants for outdoor 600577567: * / 27262 (* / 27262) identity: * / 4500 (* / 4500)
Group = ANDROID_PROF, IP = *, automatic NAT detection status: remote endpoint IS behind a NAT device this end is behind a NAT device
Group = ANDROID_PROF, IP = *, floating NAT - T of * port 21456 to * port 27262
Group = ANDROID_PROF, IP = *, PHASE 1 COMPLETED
Group = ANDROID_PROF, IP = *, IPSec initiator of the substitution of regeneration of the key time of 0 to 4608000 Kbs
IPSEC: Remote access out HIS (SPI = 0x0429CEA7) between * and * (user = ANDROID_PROF) was created.
Group = ANDROID_PROF, IP = *, the security negotiation is complete for user (Responder), Inbound SPI = 0xc95803fc outbound SPI = 0x0429cea7
IPSEC: Incoming remote access between HIS (SPI = 0xC95803FC) * and * (user = ANDROID_PROF) was created.
Group = ANDROID_PROF, IP = *, PHASE 2 COMPLETED (msgid = 9aab13ed)
| 27262 | *** | 1701 | Built of UDP connection entrants for outdoor 600577657: * / 27262 (* / 27262) identity: * / 1701 (* / 1701)
L2TP tunnel created, tunnel_id 24, remote_peer_ip is *, 1/ppp_virtual_interface_id, client_dynamic_ip is 0.0.0.0, user name is *.
Tunnel L2TP deleted, tunnel_id = 24, remote_peer_ip = *.
IPSEC: Remote access out HIS (SPI = 0x0429CEA7) between * and * (user = ANDROID_PROF) has been removed.
IPSEC: Incoming remote access between HIS (SPI = 0xC95803FC) * and * (user = ANDROID_PROF) has been removed.
Group = ANDROID_PROF, IP = *, Session is to be demolished. Reason: The user has requested
Group = ANDROID_PROF, user name =, IP = *, disconnected Session. Session type: IPsecOverNatT, duration: 0 h: 00 m: 07 s, xmt bytes: 1021, RRs bytes: 955, reason: the user has requested

As you can see session was demolished immediately, said Android failure. The Android settings:
Name: ANDROID_PROF

Type: L2TP/IPsec Psk

The IPsec identifier: ANDROID_PROF

Pre-shared key IPsec: cisco

The ASA config:

attributes global-tunnel-group ANDROID_PROF
address IPSEC_RA_POOL pool
Group-LDAP LOCAL authentication server
LDAP authorization-server-group
NOACCESS by default-group-policy
IPSec-attributes tunnel-group ANDROID_PROF
IKEv1 pre-shared-key *.
tunnel-group ANDROID_PROF ppp-attributes
CHAP Authentication
ms-chap-v2 authentication

ANDROID_PROF_GP group policy attributes
value of DNS server *.
VPN - 4 concurrent connections
Protocol-tunnel-VPN l2tp ipsec
Split-tunnel-policy tunnelspecified
value of Split-tunnel-network-list ANDROID_PROF_USERS
Cisco.local value by default-field
the address value IPSEC_RA_POOL pools

Hello

Your problem is with Android L2TP/IPsec client that connects to the AAS has been caused by: CSCug60492 (Android phone disconnected from l2tpoveripsec and reconnect asa hung)

It is Android actually issue, not a bug of the SAA. This resolution is based on Android.

I hope this helps.

Thank you

Vishnu

ASA NAT to 8.4

I'm doing the VPN tunnel between router IOS and ASA 5505. The ASA has a dynamic IP address

Everything would be ok, but I don't understand NAT in ASA's new orders. Can you tell me how to convert it to version 8.3 - 4?

access-list no. - NAT allowed extended ip 10.1.1.0 255.255.255.0 10.2.1.0 255.255.255.0

Global 1 interface (outside)

NAT (inside) - No. - NAT 0 access list

NAT (inside) 1 0.0.0.0 0.0.0.0

I use this link

http://www.Cisco.com/c/en/us/support/docs/security/PIX-500-series-Securi...

Thanks for any help.

Take a look at the document, depending on where you can find almost everything on the new model of NAT:

https://supportforums.Cisco.com/document/132066/ASA-NAT-83-NAT-operation-and-configuration-format-CLI

Especially "NAT0 / NAT Exemption / identity NAT ' in part"TWICE-NAT-MANUAL-NAT"is relevant for this task.

VPN router to the problem of the ASA

Hello world.

I am doing a VPN between a router and a series of ASA5500 and difficulties.

The router part is 100% correct because it is a daily task, but miss me something on the side of the ASA of the things.

The ASA also has remote via IPsec tunnels clients as you'll see below, so I have to make sure that continues to work!

It is a fairly urgent question. So any help or advice can be provided, it would be very appreciated!

Here is the router part:

!

crypto ISAKMP policy 1

BA 3des

preshared authentication

Group 2

isakmp encryption key * ASA-PUBLIC-IP address

ISAKMP crypto keepalive 100

!

!

Crypto ipsec transform-set transform-set esp-3des esp-md5-hmac

!

10 customers map ipsec-isakmp crypto

defined ASA-PUBLIC-IP peer

transform-set transform-Set

match address 102

QoS before filing

!

!

Access-list 100 remark [== NAT control ==]

access-list 100 deny ip 192.168.2.0 0.0.0.255 10.1.1.0 0.0.0.255

access-list 100 permit ip 192.168.2.0 0.0.0.255 any

Access-list 102 remark == [VPN access LISTS] ==

access-list 102 permit ip 192.168.2.0 0.0.0.255 10.1.1.0 0.0.0.255

Access-list 102 remark

(Crypto card has been applied to the corresponding interface)

SIDE OF THE ASA:

permit inside_nat0_outbound to access extended list ip 10.1.1.0 255.255.255.0 10.1.1.192 255.255.255.224

prevpn_splitTunnelAcl list standard access allowed 10.1.1.0 255.255.255.0

access-list Interior-access-in extended permit ip 10.1.1.0 255.255.255.0 any

access-list Interior-access-in extended permit icmp 10.1.1.0 255.255.255.0 any

access list for distance-extended permitted ip network 10.1.1.0 255.255.255.0 192.168.2.0 255.255.255.0

Global (outside) 1 ASA-PUBLIC-IP

NAT (inside) 0-list of access inside_nat0_outbound

NAT (inside) 1 10.1.1.0 255.255.255.0

NAT (inside) 0 192.168.2.0 255.255.255.0

Crypto ipsec transform-set ESP-3DES-MD5-esp-3des esp-md5-hmac

Crypto-map dynamic outside_dyn_map 20 the transform-set ESP-3DES-MD5 value

card crypto outside_map 40 match remote-network address

card crypto outside_map 40 game peers REMOTE-router-IP

outside_map card crypto 40 the transform-set ESP-3DES-MD5 value

map outside_map 65535-isakmp ipsec crypto dynamic outside_dyn_map

outside_map interface card crypto outside

ISAKMP allows outside

part of pre authentication ISAKMP policy 10

ISAKMP policy 10 3des encryption

ISAKMP policy 10 md5 hash

10 2 ISAKMP policy group

ISAKMP life duration strategy 10 86400

tunnel-group prevpn type ipsec-ra

tunnel-group prevpn General-attributes

address pool VPN-pool

Group Policy - by default-prevpn

prevpn group of tunnel ipsec-attributes

pre-shared-key *.

tunnel-group REMOTE-router-IP type ipsec-l2l

REMOTE-router-IP tunnel-group ipsec-attributes

pre-shared-key *.

Hi Chris

first on the router make this change to littil than u ned to add md5 as hashing whil employees u th in the asa and the router u did not, so the default is sha!

do

crypto ISAKMP policy 1

md5 hash

now on the SAA as I see that there is a problem in nat0 you line l2l tunnel

so that you need to look like:

permit inside_nat0_outbound to access extended list ip 10.1.1.0 255.255.255.0 192.168.2.0 255.255.255.0

You also need a permit for the ipsec traffic, the following command will allow all ipsec traffic if you want to filter traffic not to use this command and use rather ACLs on the external interface, but following that to allow all traffic to your L2L and remote vpn access:

Permitted connection ipsec sysopt

so, please:

clear xlate and reload the ASA then attempt to leave the expmtion NAT new effects

Good luck

If useful rates

Rookie of the ASA 5505 - cannot ping remote site or vice versa

Hi, I am trying configure an ipsec to an ASA 5505 (8.4) for a Sophos UTM (9.2)

Internet, etc. is in place and accessible. IPSec tunnel is also but I can't pass the traffic through it.

I get this message in the logs:

August 5, 2014

22:38:52

81.111.111.156

82.222.222.38

Refuse the Protocol entering 50 CBC outdoor: 81.111.111.156 outside dst: 82.222.222.38

SITE has (ASA 5505) = 82.222.222.38
SITE B (UTM 9) = 81.111.111.156

Pointers would be good because it's the first time I tried this. Thank you.

Running config below:

ciscoasa hostname
activate 8Ry2YjIyt7RRXU24 encrypted password
volatile xlate deny tcp any4 any4
volatile xlate deny tcp any4 any6
volatile xlate deny tcp any6 any4
volatile xlate deny tcp any6 any6
volatile xlate deny udp any4 any4 eq field
volatile xlate deny udp any4 any6 eq field
volatile xlate deny udp any6 any4 eq field
volatile xlate deny udp any6 any6 eq field
2KFQnbNIdI.2KYOU encrypted passwd
names of
!
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
!
interface Vlan1
nameif inside
security-level 100
IP 192.168.1.1 255.255.255.0
!
interface Vlan2
Description Internet Zen
nameif outside
security-level 0
Customer vpdn group PPPoE Zen
82.222.222.38 255.255.255.255 IP address pppoe setroute
!
boot system Disk0: / asa922 - k8.bin
passive FTP mode
DNS lookup field inside
DNS domain-lookup outside
DNS server-group DefaultDNS
Name-Server 8.8.8.8
network obj_any object
subnet 0.0.0.0 0.0.0.0
the object of MY - LAN network
subnet 192.168.1.0 255.255.255.0
the object of THIER-LAN network
192.168.30.0 subnet 255.255.255.0
network of the NETWORK_OBJ_192.168.1.0_24 object
subnet 192.168.1.0 255.255.255.0
network of the NETWORK_OBJ_192.168.30.0_24 object
192.168.30.0 subnet 255.255.255.0
network of the THIER_VPN object
Home 81.111.111.156
THIER VPN description
service of the Sophos_Admin object
Service tcp destination eq 4444
object-group Protocol DM_INLINE_PROTOCOL_1
ip protocol object
icmp protocol object
object-protocol esp
object-group Protocol DM_INLINE_PROTOCOL_2
ip protocol object
icmp protocol object
object-protocol esp
object-group Protocol DM_INLINE_PROTOCOL_3
ip protocol object
icmp protocol object
object-protocol esp
object-group service DM_INLINE_SERVICE_1
ICMP service object
area of service-object udp destination eq
service-object, object Sophos_Admin
the purpose of the service tcp destination eq www
the purpose of the tcp destination eq https service
ESP service object
object-group service DM_INLINE_SERVICE_2
ICMP service object
service-object, object Sophos_Admin
ESP service object
response to echo icmp service object
object-group service DM_INLINE_SERVICE_3
the purpose of the ip service
ESP service object
response to echo icmp service object
object-group service DM_INLINE_SERVICE_4
service-object, object Sophos_Admin
the purpose of the echo icmp message service
response to echo icmp service object
outside_cryptomap list extended access allow object-group DM_INLINE_PROTOCOL_3 MY - LAN LAN THIER object object
outside_cryptomap_1 list extended access allow object-group DM_INLINE_PROTOCOL_2 MY - LAN LAN THIER object object
inside_cryptomap list extended access allow THIER-LAN MY - LAN object object DM_INLINE_PROTOCOL_1 object-group
outside_access_out list extended access allowed object-group DM_INLINE_SERVICE_3 object THIER_VPN host 82.222.222.38
outside_access_out list extended access allow DM_INLINE_SERVICE_1 of object-group a
outside_access_in list extended access allowed object-group DM_INLINE_SERVICE_2 object THIER_VPN host 82.222.222.38
inside_access_out list extended access allow object-group DM_INLINE_SERVICE_4 MY - LAN LAN THIER object object
pager lines 24
Enable logging
asdm of logging of information
Within 1500 MTU
Outside 1500 MTU
no failover
ICMP unreachable rate-limit 1 burst-size 1
ASDM image disk0: / asdm - 722.bin
don't allow no asdm history
ARP timeout 14400
no permit-nonconnected arp
!
network obj_any object
NAT dynamic interface (indoor, outdoor)
Access-group interface inside inside_access_out
Access-group outside_access_in in interface outside
Access-group outside_access_out outside interface
Timeout xlate 03:00
Pat-xlate timeout 0:00:30
Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00
Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-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
Floating conn timeout 0:00:00
dynamic-access-policy-registration DfltAccessPolicy
identity of the user by default-domain LOCAL
the ssh LOCAL console AAA authentication
AAA authentication http LOCAL console
Enable http server
http 192.168.1.0 255.255.255.0 inside
No snmp server location
No snmp Server contact
Crypto ipsec transform-set ikev1 ESP-AES-128-SHA aes - esp esp-sha-hmac
Crypto ipsec transform-set ikev1 ESP-AES-128-MD5-esp - aes esp-md5-hmac
Crypto ipsec transform-set ikev1 ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
Crypto ipsec transform-set ikev1 ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
Crypto ipsec transform-set ikev1 ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
Crypto ipsec transform-set ikev1 ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
Crypto ipsec transform-set ikev1 ESP-AES-128-SHA-TRANS-aes - esp esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-AES-128-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-128-MD5-TRANS-aes - esp esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-AES-128-MD5-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-192-SHA-TRANS esp-aes-192 esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-AES-192-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-192-MD5-TRANS esp-aes-192 esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-AES-192-MD5-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-256-SHA-TRANS esp-aes-256 esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-AES-256-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-AES-256-MD5-TRANS esp-aes-256 esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-AES-256-MD5-TRANS mode transit
Crypto ipsec transform-set ikev1 SHA-ESP-3DES esp-3des esp-sha-hmac
Crypto ipsec transform-set ikev1 ESP-3DES-MD5-esp-3des esp-md5-hmac
Crypto ipsec transform-set ikev1 ESP-3DES-SHA-TRANS esp-3des esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-3DES-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-3DES-MD5-TRANS esp-3des esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-3DES-MD5-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-DES-SHA esp - esp-sha-hmac
Crypto ipsec transform-set ikev1 esp ESP-DES-MD5-esp-md5-hmac
Crypto ipsec transform-set ikev1 ESP-DES-SHA-TRANS esp - esp-sha-hmac
Crypto ipsec ikev1 transform-set ESP-DES-SHA-TRANS mode transit
Crypto ipsec transform-set ikev1 ESP-DES-MD5-TRANS esp - esp-md5-hmac
Crypto ipsec ikev1 transform-set ESP-DES-MD5-TRANS mode transit
Crypto ipsec ikev2 ipsec-proposal OF
encryption protocol esp
Esp integrity sha - 1, md5 Protocol
Crypto ipsec ikev2 proposal ipsec 3DES
Esp 3des encryption protocol
Esp integrity sha - 1, md5 Protocol
Crypto ipsec ikev2 ipsec-proposal AES
Esp aes encryption protocol
Esp integrity sha - 1, md5 Protocol
Crypto ipsec ikev2 ipsec-proposal AES192
Protocol esp encryption aes-192
Esp integrity sha - 1, md5 Protocol
Crypto ipsec ikev2 AES256 ipsec-proposal
Protocol esp encryption aes-256
Esp integrity sha - 1, md5 Protocol
Crypto ipsec pmtu aging infinite - the security association
card crypto outside_map 1 match address outside_cryptomap
card crypto outside_map 1 set pfs
peer set card crypto outside_map 1 81.111.111.156
card crypto outside_map 1 set transform-set ESP-AES-128-SHA ikev1
outside_map map 1 set ikev2 proposal ipsec crypto AES
card crypto outside_map 2 match address outside_cryptomap_1
card crypto outside_map 2 set pfs
peer set card crypto outside_map 2 81.111.111.156
card crypto outside_map 2 set ikev1 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 MD5-ESP-3DES ESP-DES-SHA ESP-DES-MD5
outside_map card crypto 2 set AES AES192 AES256 3DES ipsec-proposal ikev2
outside_map interface card crypto outside
trustpool crypto ca policy
IKEv2 crypto policy 20
aes encryption
integrity sha
Group 2
FRP sha
second life 7800
Crypto ikev2 allow outside
Crypto ikev1 allow outside
IKEv1 crypto policy 90
preshared authentication
aes encryption
sha hash
Group 2
life 7800
Telnet timeout 5
SSH enable ibou
SSH stricthostkeycheck
SSH 192.168.1.0 255.255.255.0 inside
SSH timeout 30
SSH version 2
SSH group dh-Group1-sha1 key exchange
Console timeout 0
VPDN group Zen request dialout pppoe
VPDN group Zen localname [email protected] / * /
VPDN group Zen ppp authentication chap
VPDN username [email protected] / * / password * local store

dhcpd outside auto_config
!
dhcpd address 192.168.1.5 - 192.168.1.36 inside
!
a basic threat threat detection
Statistics-list of access threat detection
no statistical threat detection tcp-interception
enable dynamic filters updater-customer
use of data Dynamics-based filters
smart filters enable external interface
interface of blacklist of decline in dynamic filters outside
WebVPN
AnyConnect essentials
internal GroupPolicy_81.111.111.156 group strategy
attributes of Group Policy GroupPolicy_81.111.111.156
Ikev1 VPN-tunnel-Protocol
JsE9Hv42G/zRUcG4 admin password user name encrypted privilege 15
username bob lTKS32e90Yo5l2L password / encrypted
tunnel-group 81.111.111.156 type ipsec-l2l
tunnel-group 81.111.111.156 General-attributes
Group - default policy - GroupPolicy_81.111.111.156
IPSec-attributes tunnel-group 81.111.111.156
IKEv1 pre-shared-key *.
remote control-IKEv2 pre-shared-key authentication *.
pre-shared-key authentication local IKEv2 *.
!
class-map inspection_default
match default-inspection-traffic
!
!
type of policy-card inspect dns preset_dns_map
parameters
maximum message length automatic of customer
message-length maximum 512
Policy-map global_policy
class inspection_default
inspect the ftp
inspect h323 h225
inspect the h323 ras
inspect the rsh
inspect the rtsp
inspect esmtp
inspect sqlnet
inspect the skinny
inspect sunrpc
inspect xdmcp
inspect the sip
inspect the netbios
inspect the tftp
Review the ip options
inspect the icmp
inspect the dns dynamic-filter-snoop preset_dns_map
!
global service-policy global_policy
context of prompt hostname
no remote anonymous reporting call
HPM topN enable
Cryptochecksum:9430c8a44d330d2b55f981274599a67e
: end
ciscoasa #.

Hello

Watching your sh crypto ipsec output... I can see packets are getting wrapped... average packets out of the peer 88.222.222.38 network and I do not see the package back from the site of the UTM 81.111.111.156 at the ASA... This means that the UTM Firewall either don't know the package or not able to get the return package... Exchange of routing is there... but you need to check LAN to another counterpart of site...

Please check the card encryption (it must match on both ends), NAT (exemption should be there @ both ends) and referral to the ends of the LAN...

I suggest you try with the crypto wthout specific port card... say source LAN to LAN with any port destination...

allow cryptomap to access extended list ip

Concerning

Knockaert

Concerning

Knockaert

ASA NAT 9.1 as object under standalone vs NAT command command

Hey guys,.

I'm setting up a few new 5515 X ASAs.

Are there major differences between the two methods of syntax NAT? They both seem to work in a lab environment. I find that the first method mentioned in the Cisco documentation for one-to-one NAT static execution, however.

Method 1:

network of the object Test-DMZ-Server_EXT
Home 172.25.1.2
network of the LOCAL-RANGE_EXT object
Home 172.17.1.2

network of LOCAL-RANGE object
host 192.168.10.2
NAT (inside, outside) static LOCAL-RANGE_EXT
network of the DMZ-Test Server object
Home 192.168.199.2
NAT (DMZ, all) public static Test-DMZ-Server_EXT
network of the ANY object
subnet 0.0.0.0 0.0.0.0
dynamic NAT (all, outside) interface

Method 2:

network of LOCAL-RANGE object
host 192.168.10.2
network of the DMZ-Test Server object
Home 192.168.199.2
network of the object Test-DMZ-Server_EXT
Home 172.25.1.2
network of the LOCAL-RANGE_EXT object
Home 172.17.1.2

NAT (DMZ, all) source static-DMZ-Server Test Test-DMZ-Server_EXT
NAT (insdie, outside) Shared source LOCAL-RANGE-LOCAL-RANGE_EXT

NAT (all, outside) source Dynamics one interface

Thank you

Hello

Both formats of configuration can achieve the same thing.

The first is Auto NAT / NAT network of the object where the user configures the configuration complete "nat" under the created 'object'. Generally, this format of configuration is used to configure static dynamic static NAT PAT and PAT at least.

The second configuration is twice the NAT / manual NAT who uses different configurations 'object' and ' object-group ' to list the addresses/actual in the NAT configurations. This "nat" configuration is not located under objects, but rather to use them. Generally, this format of configuration is used to configure the NAT type NAT0 configurations or policy.

While the two configuration to achieve the same there is a big difference between them. In the new NAT configuration format introduced in paragraph 8.3, NAT configurations are divided into 3 Sections which sets their priority in the "nat" configurations

They are as follows
- Article 1 = manual NAT / twice by NAT
- Section 2 = Auto NAT / NAT network object
- Section 3 = manual NAT / twice by NAT
  - a parameter added "after the automatic termination" is required to move this Section 3 configuration
So depending on what format you use you might find yourself of the substitution of some other configuration by inserting article 1 configuration (what you are doing by using the manual NAT / double configuration NAT format). Well I would say that it becomes a problem that in some situations in simple firewall configurations. I would say that the problem the most common here on the forums is usually when a user has configured a dynamic PAT in the Section 1 and static PAT (Port Forward) in Section 2, and uses the same public IP as PAT address both. This creates a situation where all traffic from external networks is the dynamic configuration PAT in Section 1, rather than any static configuration PAT in Section 2.

Another big difference between NAT Auto and manual NAT is the fact that NAT Auto does that source address translation (which may seem odd depending on which side you are looking for the situation) while Manuel NAT can do the conversion for the source and destination IP address. But that you configure static NAT, it didn't really matter. The two formats NAT can achieve the same thing.

Ultimately nothing for example prevents you all just about everything using Section 1 Manual NAT if you wanted to. You can set up no matter what type of NAT you wanted on this stretch alone and would not use NAT Auto at all if it was your wish. But I would say that's not suggestable and even less so if you have a large NAT configuration.

My personal suggestion in brief is as follows
- Article 1 = use of the configurations type NAT0 and static/dynamic policy NAT as these configurations are usually intended to replace typical NAT configurations.
- Section 2 = use static and static NAT PAT that this provides the format of simpler configuration for the listed configurations and they are still quite high in priority being in Section 2. NAT configuration manual would require several configurations of 'object' to achieve the same.
- Section 3 = Place all your Dynamic NAT/PAT or NAT + PAT configurations here because this should be the last connection NAT must match in all cases when it has nothing specifically designed for guests.
I find that with the above way you keep your severed much NAT configuration and know what where. The configuration is also a little less cluttered when configurations are not in the same Section.

If you want to read more about the new format of configuration NAT you can check out a document, I wrote here in 2013. Although it includes the things I mentioned above also.

https://supportforums.Cisco.com/document/132066/ASA-NAT-83-NAT-operation...

You can of course ask here in this discussion if you want :)

Remember to mark a reply as the answer if it answered your question.

Hope this helps :)

-Jouni

Clarification of the ASA NAT

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