Cisco Firewall :: Static NAT And Access From Outside In ASA 8.4

Aug 24, 2011

I have configured Static NAT on ASA 8.4; and opened the telnet access through following configuration but it is not working. What mistake I am making in my configuration
interface Ethernet0/0nameif outsidesecurity-level 0ip address!interface Ethernet0/1nameif insidesecurity-level 100ip address
hostname(config)# object network Router_A
hostname(config-network-object)# host
hostname(config-network-object)# nat (inside,outside) static
hostname(config)# access-list ACCESS-TO-SERVER extended permit tcp any host eq telnet
hostname(confi)# access-group ACCESS-TO-SERVER in interface outside
The host (router) can access internet after this configuration but telnet is not possible from outside.

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Cisco Firewall :: PIX 501 With 1 Static IP / NAT / PAT With Access List

Aug 24, 2011

I am having a problem getting this to work and I have always done it with 2 Static ip address.  but now this company changed to 1 and I am doing something wrong.

I have comcast with 1 static IP, I have a local LAN with 6 host and 1 server that does Mail and remote access and web traffic.

I need a config that allows me to use 1 static ip on the outside interface of the PIX and allow with an ACL 7 ports open to the server and allow all the local host out to the internet.

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Cisco Firewall :: ASA 5510 - Static NAT For Outside Access Not Working?

Sep 19, 2011

I've got an ASA 5510 that has been working like a charm for some time now. Until now we've not had to nat any resources to the outside. I created network objects for an internal host and an external host. The internal host has to respond to requests on tcp/2001.
The internal host has no problem accessing the internet, but when I attempt to access the internal host from the outside, I get the following:
4    Sep 20 2011    16:20:33        fw_outside_ip    62678    outside_host    2001    Deny tcp src outside:outside_host_ip/62678 dst inside_host:inside_host_ip/2001 by access-group "outside_access_in" [0x0, 0x0]
When I try to use the packet tracer to simulate the outside traffic, I get the following
5    Sep 20 2011    16:17:41        inside_host    2001            Asymmetric NAT rules matched for forward and reverse flows; Connection for tcp src outside:outside_host/1065 dst inside_int:inside_host/2001 denied due to NAT reverse path failure
I've got over my NAT statement and access rule and can't find anything wrong with either.
Here are the pertinent NAT and access rule...
static (inside_int,outside) tcp interface 2001 inside_host 2001 netmask
access-list outside_access_in extended permit tcp host outside_host host inside_host eq 2001

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Cisco Firewall :: ASA 5505 Static Hosts Cannot Access Outside

Feb 9, 2013

I have configured the ASA in a very similar manner to how the PIX was set up but I'm having trouble with some hosts on the inside accessing the Internet. Any inside hosts which use DHCP work fine. Any inside hosts with a static IP (and configured on the ASA with a "static" rule) cannot access the Internet. For example, in the config below the server daviker-dialler cannot access the Internet. I've spent a few days working on this now and have started from scratch several times but I'm not getting anywhere. Apologies for all the X's everywhere, didn't like to post anything sensitive on the Internet.

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Cisco Firewall :: Create Static PAT To Allow Host Address To Access Network Through ASA5510

Aug 23, 2012

The old syntax that I am much more familiar with has been deprecated.  On older IOS it would have been something like static (inside,outside) tcp 14033 1433 netmask  Plus an extended ACL to allow the traffic.I am trying to create a Static PAT to allow a host address to access our Network through an ASA.  I have external address that I want to hit the external interface on an obscure port (say 14033) and translate that traffic to an internal host address on  port 1433.

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Cisco Firewall :: 5505 Static Nat With Port Redirection 8.3 Access List Using Un-Nat Port

Aug 15, 2012

I am having difficulty following the logic of the port-translation. Here is the configuration on a 5505 with 8.3,So I would have thought the outside access-list should reference the 'mapped' port but even with 3398 open I cannot remote desktop to the host. If I open 3389 then I can connect successfully.

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Cisco Firewall :: 3389 Static NAT Ports PIX Firewall

Jul 11, 2011

There is a PIX firewall and it has this configured on it.static (inside,outside) tcp interface 3389 3389 netmask 0 0.This line of code works ok for port 3389 but I want all tcp ports to be translated.  Not just 3389. 

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Cisco Firewall :: ASA 8.3 Static Nat And ACL

May 6, 2011

Based on the network object below, I am looking for confirmation that It is good practice to use this natted object in my ACL applied incoming to the inside interface rather than have another object specifically for the object My_PC. I have tested and it does work, however this is my preffered option rather than having to create 2 objects, for the host and also the natted host.ASA(config)# object network My_PCASA(config-network-object)# host nat (inside,outside) static

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Cisco Firewall :: Asa 8.4.2 How To Do Static One To One Nat

Sep 1, 2011

The order in the older ios was nat 0 then static. With the new ios how is the static nat treated if i have a nat (inside,outside) source static Now I need to do some static one to one nats for some servers in the same subnet as the no nat

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Cisco Firewall :: Static NAT On ASA 8.3

Oct 26, 2011

I am trying to configure static nat on ASA 8.3 but its not working.
here is the configuration:
object network Unix-Server
description Unix server
object network Unix-Server
nat (Inside,Outside) static
its basic configuration where i have my server on the inside network ( which i want it to be natted to public ip to ( .
i tried to add an access-list ingress direction  on the outside interface to permit traffic from any to the public ip but still its not working.

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Cisco :: Access Control For Static NAT

Jun 15, 2012

(1) forward range of ports to a specific IPs using static NAT? for ex, i would like to forward port 5060 and 10000-20000 to a server

(2) how to apply access control to this static NAT ? for ex. i would like to deny specfic IPs from accessing it from public..

interface ethernet 0
ip address
ip nat inside


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Cisco Firewall :: Using Static Policy NAT On ASA 8.2?

Jul 6, 2011

i am doind a policy NAT on the folowing scenarion. 
acess-list policy_nat extended permit ip host host
static (inside,outempresa)  access-list policy_nat
I understand that when host A wants to connect to host B192.168.1.1 its going to be translated to when host wants to connect to10.0.0.1  the same entry will change the destination when the packet hits the asa from  to, is that correct ?

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Cisco Firewall :: ASA 5505 Static NAT

May 26, 2011

I just replaced a PIX 501 with a new ASA5505. I had a very weird problem and would like to know what caused it incase I run into it again. The setup is a DSL connection, with an old-ish speedstream DSL modem. Static IP, no PPPoE. I had a PIX 501, then two servers with static NAT entries on secondary WAN IPs. Everything was working fine on the PIX, I just duplicated the config over to the ASA. I swapped out the PIX for the ASA, and rebooted the DSL modem to clear out it's cache. After installation, NAT was working fine for the the global pool, but the systems with static NAT could not get online. I tried lots of different things to fix them, and they never worked. Finally I rememberd running into an issue like this a long time ago, in that the static NAT IP's wouldn't work without giving them a bump-start on the network. So I assigned the ASA each of my WAN IPs, one at a time, and tested them all. After that I went back to the original WAN IP, configured the static NATs, and they fired right up. why did my static NAT entries not work until I first assigned them to the ASA, then swapped back? I did reset the DSL modem when I swapped the firewalls, so I don't believe it was an ARP issue (unless it was an ARP issue at the far end?) I would like to know if there is something I can do differently with the devices or with the config to not have this issue again in the future.

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Cisco Firewall :: PIX 515 - How To Assign Static IP

May 20, 2012

I've been given 4 more public static ip's and would like to use one of them static ip's to point to my sharepoint box, for example i want to be able to access my sharepoint boxweb site externally: - my public pix ip - is my owa for email ( - my sharepoint box ( - not assigned
What command do I have to input on the Cisco Pix 515 to make that work?

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Cisco Firewall :: 870 - Possible To Do Static NAT Which Can Translate To A

Nov 30, 2011

I have a firewall which is conntect to a Cisco 870 router.
The router only allows one ip address to ssh into and it which is but the interface which is connected to the router is on the firewall is a and the router interface is a
I can ping the router from the inside of my firewall, but I can't ssh into it at is has a access list which will only allow ssh from the ip address
Would it be possible to do a static NAT which can translate the to a when I ssh into the router when coming from the inside?

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Cisco Firewall :: Global PAT With Static NAT On PIX 6.3

Jun 7, 2012

I am having issues getting this to work.  For email, I have DNS'd to  I want it to come in to  It needs to go out a cluster of,, or but look like it came from the address.  I have set up static NAT for the inbound.  I have set up the global PAT with an ACL group of the addresses.  I have set this same method up on an ASA with no issues but it doesn't want to work on the PIX 6.3.  What am I missing?
no fixup protocol smtp 25
object-group service NewExchange tcp
  port-object eq https
  port-object eq smtp
 [Code] ....

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Cisco Firewall :: Static NAT At ASA 5520?

Aug 9, 2011

I have Static NAT on ASA 5520 for mail server and proxy server. I can use it from internet. now i want to Static NAT for I mean>,> so on.

I want when hit it goes to
just simple static  NAT. which command i need at ASA ? what is GW of pc  ?

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Cisco Firewall :: ASA 8.3 NAT With PAT Static NAT And VPN Exclusion

Sep 19, 2011

We have a Cisco ASA 8.3 and we're trying to configure NAT with multiple types of NAT.
We have a static NAT to an inside host from
Internet Interface is on
Users get NAT (PAT) on
VPN Subnet "No NAT" exclusion is from our LAN to various other locations.
Here are the relevent extracts from our configuration:
object network Server
nat (inside,outside) static 
object network Inside_LAN

When the VPN exlusion ACL is applied to the configuration, PAT users have no connectivity to the Internet via TCP though UDP and ICMP traffic still passes. The VPN is operational. With the VPN NAT configuration removed, as expected the VPN fails, but users have connectivity to the Internet.

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Cisco Firewall :: Static Nat On ASA5510

Aug 25, 2012

We have network topology:

Inside Network ( --- ASA5510----- Outside network (
ASA5510 have: Inside interface:; outside interface:
And we config:
# object network obj_inside
# subnet
# nat (inside,outside) dynamic interface
So, we í in from outside, we can't access web at

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Static Ip To Access The Application

Jul 13, 2011

I have an application for my client's company. Their clients should post the request from outside thru internet. for that we have bought a Static IP. And now i have to configure that static ip to access the application from outside.what is the procedure for that?

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Firewall / Proxy For Static IP?

Jul 5, 2011

I have a server having windows server2003 os. I have configured my web application on this server which is accessible over internet using static ip. But I found that there is an risk of viruses on my server. Thats why now I want to configure this server behind the firewall/Proxy as well as dont want to share my static IP.Is there any way to keep server protected using firewall / Proxy application which is free. And also tell me how to nat the static ip.

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Cisco WAN :: 1921 With Static IP Won't Access Internet

Feb 24, 2012

I have the same 1921 router that I am trying to install at a facility with a Static IP address and Static DNS information to get on the internet and I cannot get the 1921 to access the internet!
Here is my config:
Building configuration... 
Current configuration : 4072 bytes
! Last configuration change at 09:51:57 Chicago Sun Feb 26 2012 by fbcpekin
! NVRAM config last updated at 09:51:58 Chicago Sun Feb 26 2012 by fbcpekin


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Cisco Firewall :: ASA 5505 - Static NAT And ACLs

May 25, 2011

Currently a customer has all theLAN devices using a router as the Default Gateway. The router also do the Dynamic NAT to the internet access and has NAT/PAT rules to publish some services like HTTP and FTP. As I know the router will permit all the incoming traffic in all its interfaces without restrictions at less there is an ACLs that restrict the incoming traffic on an specific interface.Now the customer has bought a brand new ASA and wants to use it as the default gateway for the entiery LAN. This means, the ASA will have the internet connection and will be the responsible for the NAT/PAT process.

I have configured the NAT/PAT rules already following the current router configuration, but I need to know if I have to configure ACLs allowing the incoming traffic on th Outside interface for the services I NATed.

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Cisco Firewall :: ASA 5505 - Static Nat And VPN Conflict

Jan 12, 2012

I have a Cisco ASA5505 running 8.2(1) and I am using ASDM to manage the firewall. I have a Linux VPN server on the inside with and IP address of YYY.YYY.YYY.39 with a static NAT to the outside with an address of XXX.XXX.XXX.171 . I have a site to site VPN tunnel which terminates on the outside of the ASA on the outside interface XXX.XXX.XXX.190 .Traffic from the YYY.YYY.YYY.0/24 network can't transverse the site to site VPN as there is a conflict of IP address's on the far side so it is natted via a dynamic policy to host address ZZZ.ZZZ.ZZZ.100, Users remote into the inside(YYY.YYY.YYY.0/24) for support via the Linux VPN server (.39) and then need to communicate down the site to site VPN. The problem is that the static NAT for the incomming connections takes preference and bypasses the site to site VPN tunnel for outbound traffic. I tried to create a policy Static nat but it tries to modify the static nat that handels the incomming traffic to the Linux server.

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Cisco Firewall :: Static 1 To 1 NAT Not Working On ASA 5505

Jan 28, 2013

i have 2 internal server sitting in inside interface
inside network vlan 1 ip address, and
i going to map to public ip routable address and to public ip routable address
the purpose is to make those 2 server, and .22 to be able to access remotely using public routable ip address,
however, after done the configuration i still not able to ping or access the public IP Address mention above. my both server are turn on and can access internally.both server are also able to access internet. See below partial configuration retrieve from Show Run.
global (outside) 1 interface
nat (inside) 1
nat (Antlab) 1


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Cisco Firewall :: Dynamic PAT And Static NAT ASA 5515

Mar 23, 2013

Recently we migrated our network to ASA 5515, since we had configured nat pool overload on our existing router the users are able to translated their ip's outside. Right now my issue was when I use the existing NAT configured to our router into firewall, it seems that the translation was not successful actually I used Dynamic NAT. When I use the Dynamic PAT(Hide) all users are able to translated to the said public IP's. I know that PAT is Port address translation but when I use static nat for specific server. The Static NAT was not able to translated. Any conflict whit PAT to Static NAT?

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Cisco Firewall :: ASA 8.4 NAT Static And Dynamic With Same Public IP

Nov 8, 2011

in ASA 8.4, I need to use to static nat an internal IP with a public IP and use the same public IP to dynamic nat another internal IP:
-nat (inside,outside) source static IP1_PRIVATE IP_PUBLIC
-nat (inside,outside) source dynamic IP2_PRIVATE IP_PUBLIC
All outgoing connection from IP1_PRIVATE and IP2_PRIVATE should be natted to IP_PUBLIC and all incoming connection to IP_PUBLIC should be forwarded to IP1_PRIVATE: is it correct ?

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Cisco Firewall :: Static NAT SYN Timeout - ASA 5505

Aug 30, 2011

I have a 5505 for a small business that has one web server.  The web server has a static NAT entry to an IP address and not an interface.  There is an access rule allowing any HTTP traffic to the outside IP of the web server.  From the web server I can't access the Internet.
All other computers on the network can access the Internet using a dynamic nat rule that uses the outside interface. The web server is accessible from a computer behind the firewall.
If I delete the static NAT entry for the web server I can get on the Internet.
I have turned debugging on and see that an outbound connection is built and then 30 seconds later the connection is torn down with the bytes 0 SYN Timeout message.
I am running 8.0(5).

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Cisco Firewall :: ASA 8.4.1 Static NAT With Port Translation

May 30, 2011

I'm trying to migrate from olda PIX to newest ASA 8.4.1. Everything seems to be good except the static NAT. [code]

The inside interface uses implicit rule. ( permit any less secure network )
Although te above config the ASA logs the following.
TCP access denied by ACL from to outside:
The our public Internet IP whic are used as outside IP also.

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Cisco Firewall :: ASA 5510 - Static VLAN NAT

Mar 9, 2012

One of our customers has asked us to Nat from the LAN to the Voice LAN based on destination IP address in order to access a public phone server through a vendor managed voice router..
                                Internet for everything else
Inside ------------------------> ASA 5510 -----------------> Voice router  ------>  outside to public phone server only                    
Here the ASA5510 has an interface in both networks and the inside network can ping the voice network through the firewall by using non at acls. The phone server can only talk to the network. So I need to nat the network to the Voice interface on the ASA
So I think I need the following static but I get the error below:
static (Inside,Voice) interface net mask
WARNING: All traffic destined to the IP address of the Voice interface is being redirected.
WARNING: Users will not be able to access any service enabled on the Voice interface.
ERROR: Invalid net mask with interface option

[Code] .......

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Cisco Firewall :: Internet In ASA 5505 With Static PAT

Aug 31, 2012

I have an ASA 5505 behind my internet router. i have got only one public ip configured on the router outside interface. subnet is configured between ASA and router and inside network is (Refer the attached diagram).
I have exposed my mail server and ftp server to public through static PAT in router and ASA with the same public on router outside interface. Iam facing issue some of the machines inside my network internet is not working(actually DNS is not resolving) some of the PC's internet is working fine some of the PC's randomly working. i have attached the diagram and ASA config , after this issue is sorted out i need to configure a L2L VPN to my head office.

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Cisco Firewall :: 8.4(2) Static NAT Versus Dynamic NAT

Oct 5, 2011

we are running 8.4(2) on the asa with the below configuration we basically have a static for .7 on .25 and a nat for .7 for port direction with manual nat that takes precedense over auto nat within the object group am I correct that I dontneed the dynamic statement and that its redundant?

-object network obj-10.X.0.25-02host 10.X.0.25
-object network obj-10.X.0.25nat (any,INSIDE) static X.X.X.7 dns
-object network obj-10.X.0.25-01nat (INSIDE,OUTSIDE) static X.X.X.7 service tcp smtp smtp
-object network obj-10.X.0.25-02nat (INSIDE,OUTSIDE) dynamic X.X.X.7

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Cisco Firewall :: ASA 8.4 - Static NAT With Outbound SMTP

Mar 30, 2011

Below is the interesting part of my config.  I have static NAT configured and working inbound for the Exchange Server and the Barracuda, however outbound traffic from those hosts comes out as the interface IP.  Thoughts?  I've tried a number of things (outside, inside), etc.
object network obj_any
object network DSN-EXCH01
object network MAIL-IN

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