Cisco Firewall :: ASA 8.4 NAT Command Selection
Jul 4, 2011
I am designing a new NAT configuration for an ASA 8.4
On my PIX 8.0 configuration I needed to allow bidirectional traffic between interfaces with different security levels. For example, Inside at 100 and dmz at 50.To accomplish this in 8.0 I used a static NAT command along with any necessary ACLs.
I now need to apply this same 8.0 config for 8.4. With the static command not availablein 8.4 I am unsure of which NAT commands to use to achieve the bidirectional traffic.
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May 4, 2011
Our company is in the process of replacing our old firewall with a Cisco ASA since our old firewall can handle only 170 concurrent users and we are expanding fast. Can I know what are the considerations when selecting from the different models of ASA currently we are debating if we should buy a 5510 or a 5520 also can I know if cisco ASA also have a limitations on concurrent users online in a lan like our old firewall. By the way we are a Call Center company(going 500 seats) so we are using VOIP(Asterisk using SIP and IAX).
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Dec 28, 2011
I am in the process of migrating a production firewall from PIX 6.3 to ASA 8.4(2). This is going to be a complete firewall rebuild and I will not be upgrading the configs because they have become out of date and very bloated. I am in the process of converting the NAT commands.[code] I am hoping these commands would be enough to replicate the previous functionality. I removed all the static identity NATs because NAT control is no longer in place so those rules are not required. Additionally I didn't re-create the rules that had NAT ID 0 or 1 because it didn't look like they were doing anything. correct way to do the static NAT commands at the bottom.
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May 29, 2013
what the new command is for NAT in version 8.3?The config i have is from Version 7.2 and doesnt work on 8.3. [code]
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Mar 10, 2013
I'm coming from a 5505/5510 ASA to a 5512x. I see the following 7.2 commands are now set with the NAT command in 8.6:
-------------begin 7.2 commands---------------------
global (outside) 1 interfaceglobal (inside) 10 interfaceglobal (wireless) 1 interfacenat (inside) 0 access-list nonatnat (inside) 1 192.168.3.0 255.255.255.0static (inside,outside) tcp interface www 192.168.3.114 www netmask 255.255.255.255static (inside,outside) udp interface 5008 192.168.3.117 5008 netmask 255.255.255.255static (inside,outside) tcp interface 3390 192.168.3.101 3389 netmask 255.255.255.255static (inside,outside) tcp interface h323 192.168.3.118 h323 netmask 255.255.255.255
--------------end 7.2 commands----------------------
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May 17, 2012
Boss wants a listing of the firewall rules only. What's a command I can run that will give me a listing of this?If I can get an output of firewall rules only, via GUI, that'll work too. It just needs to end up with a printout on a piece of paper telling me what the firewall is doing.
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Jan 15, 2012
What is the new configuration in ASA 8.4 to replace the old "nat 0" command.
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Dec 5, 2012
want to know the command for configuring NAT on My ASA5505.
Local IP - 192.168.1.0/241
Public IP - 182.73.109.118 255.255.255.252
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Nov 19, 2012
I have a PIX506E that was resently reset and it has version PIX Version 7.1(2) . It either uses some different commands or I am not using them correctly. [code]
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Mar 5, 2011
i'm new with the asa's...i'm familiar with the FWSM's on 6500's and pix..I'm running Version 8.3(2) and i wanted to setup nat-control and use of identify nats for advertising inside subnets to my outside networks.
the old command was static(inside,outside) 10.x.x.x 10.x.x.x netmask 255.255.255.x i'm having a little difficulty decyphering the pdf about the static nat...the command itself is no longer used, nat-control is no longer used, but i'm not quite sure what the equivalent nat command is that equates to the old static inside,outside command.
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May 28, 2012
How do you save the command output from the CLI to a file on flash?
With IOS, I would normally use a pipe command to redirect to tftp, but the ASA doesn't support this as far as I can tell. As a work around I was thinking I could save the output to flash and then tftp that file off the ASA.
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Jun 11, 2012
we just bought a 2921 with the following modules: 4 port clear channel T1/E1 HWICSM-ES3G-24-P: EtherSwitch.I read some CISCO documents, and not be able to find what I need. I would prefer all instructions from you are for CLI interface.This is my first time to deal directly with T1, WIC and 2921 etc. The following is what I get from ATT, IP masked IP Address Block IP Address: 20.20.20.136/29 WAN Link Details: WAN Link IP Address:13.13.13.92 AR Serial INT IP Address:13.13.13.93 CR Serial INT IP Address:13.13.13.94 WAN Link Subnet Mask:255.255.255.252
A: how do I configure T1, what does "AR, CR" stands for, and do I need to use both IP addresses? What is the WAN Link IP for?
B: We have two T1 lines, so I should plug them both to the WIC, say port 0 and port 1, how to configure them?
C: how do I access the firewall from the command line?
D: I followed T1/E1 HWIC installation guide, and as soon as I add channel-group to the controller t1, the serial interface went down?
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Oct 3, 2011
The firewall is running version #8.2 on ASA 5580. Address translation is not needed on Inside network and Outside network.But the customer has hundreds of static command as below.. [code] Can they all be removed and replace with one single command as below?
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Sep 3, 2008
Before running firmware asa722-k8.bin and asdm-522.bin ASDM "asdm location" config lines were created when we created a network object. After the upgrade to asa722-k8.bin and asdm-522.bin this dissapeared.We recently upgraded to asa724-k8.bin and asdm-524.bin which brought those config lines back.So if "asdm location" is needed, if not can we make sure those lines wont pollute the config file?
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Jul 9, 2012
Tried setting up a Shape Policy and it states its invalid. Worked fine on my 5520, just curious to know why its coming as invalid now
ciscoasa(config-pmap-c)# shape
^
ERROR: % Invalid input detected at '^' marker.
ciscoasa(config-pmap-c)# shape ?
ERROR: % Unrecognized command
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Jan 23, 2012
So, I made the fatal mistake while consoled in to do a "Show Run". Now, it is just stuck in that cycle. I tried the usual "Ctrl+Shift+6" command, and even the "Ctrl+6" with no success.
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Mar 1, 2010
We have an ASA 5540 failover bundle working in Active/Standby mode. On our active asa 5540 when the sh run command is issued it gets stuck and displays the output after more than 15-20 mins.. and it takes another 10-15 mins to get back to the prompt..
However on the standby asa 5540 if the sh run command is issued, it displays the ouput and comes back to the prompt (even though this also takes 2-3 seconds)
I have tried rebooting the active asa 5540.We are running asa version 8.2.2.
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Oct 23, 2012
i am wanting to open up snmp on a pix 501 6.3 version. I am planning on doing it with the following configuration: [code]
I noticed you cannot specify RO on the snmp-server command with the older pix. I don't want this configuration to open up any write access to the pix. Is there a way to specify only read only for snmp
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Aug 23, 2012
I need top open ports 80, 443 and 1882 to a specific external client (IP address).
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May 7, 2013
i can't do it with ASDM and try to use command but still fail
nat (inside,outside) source static inside-10.18.20.162 4F-1.1.1.2
it is working fine for the above command if there is more than one public ip, in case 1.1.1.1 is for firewall interface public ip?if i have only one public ip and i would like to forward http traffic to my internal network? how can i use command to do that?
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Nov 19, 2012
I would like to have these commands on our Firewall to avoid at least several students to use this service. How to translate this? It's apparently working great if I will use an Linux box or another firewall compatible with iptables.
iptables -I INPUT -s hotspotshield.com -j REJECT
iptables -I INPUT -s hotspotshield.net -j REJECT
iptables -I INPUT -s anchorfree.com -j REJECT
iptables -I INPUT -s anchorfree.net -j REJECT
iptables -I INPUT -s openvpn.net -j REJECT
iptables -I OUTPUT -d hotspotshield.com -j REJECT
iptables -I OUTPUT -d hotspotshield.net -j REJECT
iptables -I OUTPUT -d anchorfree.com -j REJECT
iptables -I OUTPUT -d anchorfree.net -j REJECT
iptables -I OUTPUT -d openvpn.net -j REJECT
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Apr 28, 2012
I just tried to do a quick privilege level setup for a user to limit access to asa. User should be able to add nat's to configuration.ASA 8.4 is in question and trying the following does not seem to work:
privilege configure level 3 command object,gives me ,ERROR: specified command 'object' not found in any mode.It looks like localy this cannot be done or I am doing something wrong?
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Jan 13, 2009
What is the command for creating a user on an ASA 5500 running 7.2(3) that can only view the config but not make any changes?
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May 14, 2012
how can i check that ASA is passing traffic? Also what command we can use to make sure VPN is working fine.
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Oct 19, 2011
We are experiencing intermittent issues with the IPS on our ASA5585 vs 8.4(2). Probably something with the dataplane. So I want to keep debug cplane 255 activated and logged with log debug-trace setting to syslog server. But when session times out the debug command is cleared so the output stops. Since it is a intermittent issue I want to keep debug activated...Totally different behaviour then with routers which keeps it activated. how to keep debug activated on a ASA.
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Jan 7, 2013
Need to check how many tunnels IPSEC are running over ASA 5520.Tried commands which we use on Routers no luck?
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Apr 3, 2011
I have Cisco ASA5510 OS version 8.4(1), when i try to apply static command, this command is not found, the NAT issues used nat(inside,outside).
So why i can't found this command ?
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Apr 24, 2012
Today i received FWSM from cisco (RMA), I need to configure it as standby unit for existing FWSM active/standby setup.
IOS on RMAed FWSM is 2.3.4 and cisco VSS supports FWSM IOS 4.0.4 and later.My issue is, I cannot access FWSM (IOS 2.3.4) via session command from cisco 6513 but could successfully consoled it without any problem. I have reloaded it twice and also tried to disable and enable power on it.
VSS#sh module switch 2
Switch Number: 2 Role: Virtual Switch Standby
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
2 6 Firewall Module WS-SVC-FWM-1 -----------
[code]....
why I cannot access FWSM through session command ?Whether this is because of older IOS ? If yes then how to upgrade its IOS ?Is it possible to upgrade IOS via FWSM console ? if yes, Do i need to test on different slot ?
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Oct 12, 2011
I am switching a switch connecting to the ASA5550 tomorrow. My current switch is using fiber connecting to the ASA. The new one only support copper. If I switch between fiber to copper on the ASA (change media-type command on interface) will it cause a down time? I have VPN tunnel on the ASA and don't want the session to reset.
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Sep 7, 2011
I have a router with 2 WAN (MPLS) connections to two different IPSs.One connection is a 3mbs MLPPP connection and the other is a 10mbs MetroEthernet connection.Both use BGP to peer up with the ISP with private AS numbers (65001, 65002, etc)I want the router to always prefer (use) the BGP connection through the 10mbs link, but here are my considerations:I can't change the prefix length for the peers. In other words, BGP 65001 is going to advertise 192.168.21.0 /24 to its peer, and BGP 65002 is going to advertise the same network with the same mask.What is the best way to make sure the 10mbs link is always preferred? Can I do local preference?
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Apr 26, 2013
I have sub-interfaces created on the switch and are in active(up/up) state,but these sub-interface not available for selection in the instance window while creating the poller, and am not able to monitor the traffic on these sub interface in the performance management.
LMS will not display the interfaces in the instance selection window if they are not active, but here the sub-interface are in active state but these are not available.
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Sep 20, 2012
I multi homed to dual ISPs using a single 6509e. Currently, I am only receiving a default from wash ISP and marking one with a higher local pref. most of my traffic flow is inbound, so this config meets my need. The issue I have: if either ISP has has an outage upstream from my directly connected peer, my router does not detect that and continues to send traffic out thru that provider only to be black holed. My 6509 will only support 256k routes, so full route tables isn't an option. I could receive partials from each ISP. Is there any other method to detecting this upstream ISP issue and then adjusting my local pref on my default to use the alternate provider path?
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Mar 4, 2013
I multi homed to dual ISPs using a single 6509e. Currently, I am only receiving a default from wash ISP and marking one with a higher local pref. most of my traffic flow is inbound, so this config meets my need. The issue I have: if either ISP has has an outage upstream from my directly connected peer, my router does not detect that and continues to send traffic out thru that provider only to be black holed. My 6509 will only support 256k routes, so full route tables isn't an option. I could receive partials from each ISP. Is there any other method to detecting this upstream ISP issue and then adjusting my local pref on my default to use the alternate provider path?
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