Cisco Firewall :: Configuring NAT On ASA Running 8.3?
May 15, 2012
I'm having an issue configuring NAT on an ASA running 8.3. 've managed to configure NAT from the Inside interface to the DMZ, using PAT, so that the traffic is hidden behind the IP of the DMZ interface. This seems to work ok.
The problem I have is when I try to configure a rule for traffic that originates in the DMZ back to the Inside. I can't seem to get any traffic to flow from the DMZ to the Inside, and sometimes I manage to stop traffic flowing in both directions!
What would be the best way to configure the return traffic from the DMZ to the Inside.
I need to replace an existing ASA 5540 with a new ASA 5525X. I would like to pre-stage and configure the new box with the existing config, migrate license and export certificate files before swapping it with the old one during a change window. The new firewall will run 9.1 on deployment. Now the same 7.2(4) cannot just be copied over to 5525X running the minimum 8.6 version. There is a Web based tool available at [URL] according to Cisco documentation but the page does not load for me (Cisco intranet only tool ?). Is there another tool for automatic conversion ?
I have an ASA 5510 in a live environment. Up til a short while ago I could access this via the ASDM and ssh. However I can no longer connect to it via eithier. When I access It via SSH I get a disclaimer saying the following
*** You have entered a restricted zone! Authorized access only!!! Disconnect immediately if you are not authorized user! ***
It then cuts me off.
When I try to access the ASDM I get the following
The firewall is running all its services without a problem and I can ping the device without any issues. Also none of the config (to my knpowledge has been changed). I set up a console session and http server enable is still there with
I have CISCO 5510 firewall running with IOS ASA821-k8.bin.My company has purchased another ASA5510 with IOS ASA843-k8.bin.We need to run both firewalls in Active/Standby mode.
If I upgrade the IOS of old firewall to ASA843-k8.bin the the running configurations does not work properly.It does not pick the network objects and NAT rules as they are configured with OLD IOS and running.
Or if I restore the configurations of old firewall at New ASA the result is worst. Even firewall with new IOS does not show any Access Rule and NAT rule and does not supprt network objects.
I am configuring a Cisco ASA 5505 firewall.In the office there is 1 x SBS 2008 server and 5 x PCs, all sat behind a Netgear DGN1000 ADSL router.We want to implement a ASA 5505 for added security.I have configured the internal interface of the Cisco ASA 5505 to be 192.168.0.1 - this is connected to local switch. The client PCs use 192.168.0.1 as their default gateway.I have configured the external ASA 5505 interface to be x.x.x.217. [code]Change the current router status from Router/Firewall/Modem to Modem only (Bridge mode). The ASA 5505 has its outside interface connected into one of the LAN ports of the netgear. The lan port has an IP of 192.168.0.254.
I was going through the release notes on cisco website of ASA 8.4.6 and ASDM 7.1.3 but I just can not find a definitely answer: if ASDM 7.1.3 can run with 8.4.6?
We have a requirement where we need to enable a dynamic NAT from DMZ-1 to Inside, I gave the command below, but for some reason it does not work.nat (DMZ-2,Inside) source dynamic any interface,NOTE: The access-list is permitting all the traffic from DMZ-1 and Inside (for test)
I have 30 switched in my corporate network it’s all up and running all switches running by default configuration and connected to WS-C4506 core switch our dhcp server pooling 192.168.100.1/27 network. Now we need to configure new Vlan for finance department this department has more than 200 users. If my server distributes 192.168.200.0 range ip can vlan2 automatically assign ip 200.0 addresses to finance department.All switches running default config no ip address assigned.
I'm replacing a new ASA 5505 due to a corrupted flash. On the original unit, I had the ability to SSH into the device using TeraTerm with no problems. While configuring the new device, I entered commands to enable SSH into the unit.
I have a Cisco ASA 5520 running 8.2.2 with the VPN Plus license. I am wondering what is the max number of sub-interfaces you can have on a physical interface. I know on the 5505 it was 20 sub-interfaces if you were running the Security Plus license. What is the magic number for the 5520. I have hit 20 sub-interfaces on gi0/1 interface and now I am starting to run into problems with sub-interface #21.
I have VPN up and running between two sites. Both sites have Cisco ASA 5505. I can ping across the devices from both networks. But I cannot remote into the servers on the other network.
I Have an asa 5510 running code 7.2 configured with ssl vpn,ssl vpn users able to connect to to portal which i have configured with the required resources,but the thing is that these ssl users unable to upload files to cifs shared directory , although they have full access to the shared folder
I want to run two syslogs, one to Loglogic for compliance and the other to Solarwinds for network administration. Currently the firewall is setup for just the one syslog device. If I add an additional device ie further IP in the config for the Loglogic box will there be any noticeable differences in the performance of the firewall, does affect the cpu utilisation, or memory in any way.
I will be supporting a new ASA 5585X running 8.4 and I was wondering if it's possible to apply an ACL globally instead of it as an access group that is applied to a specific interface as in or out ... below are the interfaces and ACl.
We just changed over to Comcast Business and after changing the outside interface to new IP and setting static route. I have access to internet and everythig appears to be good, However asdm will never fully load, alway stuck at 17% or 77%, and I always see "parsing running config".
When I do a show run it will not fully load either, always stop at certain out put. 5 seconds after pulling the Comcast cable out both asdm and running config will load fine.
I have a Cisco 5505 that had its disk erased (erase:disk0) and now I am trying to load a new image (822 or 813) from a tftp server.
From the ROMMON prompt I have configured the relevant parameters and run a tftp command.
The tftp transfer seems to complete successfully but then it gets stuck on "...loading".
I have tried different versions of IOS and I always experience the same problem, even though, with older versions of IOS (7.x), the device manages to reboot itself but then it crashes with the following error:
"Error : Uncompression of the image failed. invalid compressed data--format violated"
Could it be an hardware related-issue or a licensing problem maybe? or am I missing anything obvious?
also, with regards to the license: once restored, how do I get my 50 users license back?
I am about to replace the supervisor engine in our pair of distribution switches in our data center. We currently have a FWSM module installed in each of my distribution switches running 3.1(20) code. The old sup720 are running 8.6(4) and the mfsc are running 12.2(17d)SXB11a. I am wondering about the compatibility of running the FWSM with the same code after installing the new VS-S720 modules. I do not plan on configuring virtual switch yet and did plan on upgrading the FWSM to 4 code train but just not immediately. Will I be able to run my FWSM using the current 3.1(20) code after I install my new VS-S720 running in native mode?
If I have to upgrade the FWSM then I need to know if I have to upgrade the module in each distribution switch at the same time? Furthermore I do not believe that the FWSM 4 code is supported in hybrid mode, which means that I will have to convert to native before upgrading to FWSM 4 before I install the VS-S720 in one of my distribution switches. Currently the FWSM modules are in active/standby mode in different chassis.
I had planned to install the VS-S720 module in one of my distribution switch and do the other installation a week later. I would rather not have to convert to native and upgrade the FWSM modules in both distribution switches during the first switch upgrade.
cnDS02> (enable) sh mod Mod Slot Ports Module-Type Model Sub Status --- ---- ----- ------------------------- ------------------- --- -------- 1 1 16 1000BaseX Ethernet WS-X6516A-GBIC no ok 2 .... Please refer to Detail Note. cnDS02> (enable) sh mod
I have a Cisco 2811 running Advance Enterprise v 15.1-2. I've just configured it using ccp for internet access (on 2 lines) and a firewall. The configuration is pretty much all default and I used the ccp wizard to create a 'medium-secure' firewall. I have 2 blocks of public IP addresses for my internal network and for the DMZ. The 2800 is configured as follows:
- 2 x default routes. one to each dialer.
- 6 zone pairs as follows: - ccp-zp-self-out (seems to mostly work... I can ping any IP address from a console but not a hostname) - ccp-zp-in-out (works fine, both interfaces seem to be in use) - ccp-zp-in-dmz - which by default set to ccp-permit-dmzservice - which inspects ccp-dmz-traffic - which matches group dmz_traffic and has a class map dmz-traffic
- cnc-zp-dmz-out which is set to ccp-inspect. (my own zone pair to allow systems in the DMZ zone to see the internet. This works fine.)
- ccp-zp-out-dmz (works fine. I can see my web server from any system outside my own network)
- ccp-zp-out-self (which, I guess allows anything permitted to get to the 2811)
Internet works from within the DMZ and in-zone. The outside can access my dmz servers. The inside can access most things on the outside using the firewall rules.
1) Although I have the zones set up to allow the same access from in->dmz as I do from out->dmz and out->dmz seems to work, I cannot seem to access anything in the dmz from the inside.
2) When setting up the firewall I ticked the box for 'allow PPTP clients to make connections from the inside' (or something like that). I cannot seem to make a PPTP connection from my workstation.
I have scoured the internet for guides, looked through these forums & the cisco configuration guides and experimented all day but still cannot figure this out.Do I need a special route between the inside and dmz? I have seem references to static routes on ASA firewalls but the command 'static (inside,dmz)...' does not work on a 2800 series router.
I am trying to connect 2 VMWARE servers directly to my 5515-X firewall. [code]ASDM will not let me assign the same VLAN to both Gi0/2 and Gi0/3. I dont want to connect my VMWARE servers to a switch first (that just adds one more component that can fail).
I am configuring new ASA 5520 with AIP module for our network with HA (2 boxes), would be the best practice to configure in order to protect web servers and email server.
There seems to be a large number of the subject queries in one form or another. Having acquired an asa 5505 and using 8.43 firmware and the ADSM gui for router configuration it has not been an easy transition from other products. I have come to understand embedded NAT objects for basic port forwarding but am at a loss on configuring twice nat or manual nat, not really ever dealing with it before, or in this manner.
What I would like to suggest to the experts, is to include far more ADSM web gui examples and discussion for manual nat. The tools are all there - in the nat rules editing page, the display of the rules pictorially and the packet flow at the bottom of the page (and finally thru packet tracing). What is needed is more on the actual entries on the nat editing pages and the logic and explanation of those entries. In this forum what I would like to see is when there are responses that they include both the CLI recommended entries b AND the associated adsm web gui pics. With good documents for reading and examples in the forum, I think there should be much less confusion allowing more attention to some very complex scenarios. At the very least I and others like me will get better edumecated. I am looking to understand CIsco packet routing through explanations of the web gui entries. In fact, I am learning far more by trying to understand the web gui vice simply copying and entering CLI commands. In terms of documents, for example, there should be a very thorough explanation of the relationship between "Translated Addr:" in the first NAT editing page with "Destination Inteface" in the second Advanced page .I have added the packet tracing jpegs for further context. There is an UNNAT lookup entry (first trace block, out of view on the pic) a concept which is missing in the documentation I've read that needs to be added but it is illuminating in how the router handles traffic. What is also interesting is the fourth jpeg which also shows the flow designation of a packet and its handling internally (new packet or one that is associated with an existing packet (previously identified and put in an appropriate table xlate etc)).
I present wish to develop a policy and template for QOS on our ASA 5520 release 8.0(2) we presently have wish to do server hosting in our network for other organization,which the they will be able to access their servers they have both public and private addresses. we do have our one servers also already in production all behind the ASA And therefore we wish to apply qos on the servers to be hosted and we wish to do this on the ASA. how to go about this to apply qos on the ASA?
We have to set up voip for our network(for 50 phones not he cisco phones).
I need to just the route the voip traffic to gateway address of telephonic company(1.1.5.7) where they provide us the connectivity for the setination call.
What sort of protocols should i have to enable in pix i saw the concepts like sip, h323, ras, skinny.
We are using only voip for asa and no data or other traffic should be allowed.
inside adrees: 10.10.10.0/24 for all voip phones outside:121.21.22.1 telephoneic gateway: 1.1.5.7
I have two ASA 5510's that I want to setup in a Active/Standby configuration. My only question is on how to connect the inside ports to my LAN. I have 5 Catalyst 3750's stacked together that connect to the ASA's. Should I run the inside interface on ASA1 to a port on switch 1. Then run the inside interface on ASA2 to a port on switch2? And make sure both those ports are in the same VLAN? But, then when failover occured, how to I automatically make it clear the arp cache so the traffic starts flowing out of the right port?
VLAN 20 and VLAN 30 i configured. VLAN 20 interface IP : 192.168.20.1/24 VLAN 30 interface IP : 192.168.30.1/24. Inter-vlan communication is happening fine.
For testing for purpose i configured extended ACLs. Here is my requirement: I want to stop communication from VLAN 30 to VLAN 20 but not vice-versa.
Here i configured like this:
access-list 111 deny ip 192.168.20.0 0.0.0.255 192.168.30.0 0.0.0.255 access-list 111 permit ip any any applied ACL in VLAN 30 interface 'in' direction. ip access-group 111 in
In this scenario, communication is stopping in both directions. If i ping from one of the IP VLAN 20 to one of the ip of VLAN 30, i was gettng Requested time out. And if i ping from one of the IP VLAN 20 to VLAN 30 interface IP, i was able get pinging.
From VLAN 30 to VLAN 20, i was getting destination host unreachable from VLAN 30 ip( Its fine as its my requirement). So, solution needed to communicate from VLAN 20 to VLAN 30.
I just upgraded an ASA-5510 from 7.0 to 8.4.4-1 and theres a lot of stuff in it I don't recognize that I never added, mostly because of new network objects, nat commands, and other migration stuff. Its been awhile since I've configured the ASA and I think I'd like to start from scratch and clean it up a bit because theres so many lines for so little that I really need.
I have a 5510 assigned an IP address on the outside interface with 3 inside interfaces and below are the only requirements I need.
Network-A (192.168.1.0/24) - incoming ssh port 2202 goes to node 192.168.1.2 - incoming ssh port 2203 goes to node 192.168.1.3 - handle incoming https (443) requests - handle incoming www (80) requests - cannot see Network-B or Network-C
Network-B (10.0.0.0/16) - ssh to nodes on Network-A - incoming ssh port 22 goes to node 10.0.0.20
Network-C (192.168.2.0/24) - ssh to nodes on Network-A - incoming ssh port 2210 goes to node 192.168.2.2
ASA-5510 - sends logging to syslog node 192.168.1.3 on Network-A - there are DNS and NTP servers located outside
To configure a dynamic NAT, PAT, or identity NAT rule, I need to perform the following steps:
Step 1 From the Configuration > Firewall > NAT Rules pane, choose Add > Add Dynamic NAT Rule.
The Add Dynamic NAT Rule dialog box appears. However, when I click on Add I don't get the option to Add Dynamic Nat Rule. To see the options I get please see attachment.
The following is a capture of the show version:
ciscoasa# show ver Cisco Adaptive Security Appliance Software Version 8.4(2) <system> Device Manager Version 6.4(1) Compiled on Wed 15-Jun-11 18:17 by builders System image file is "Unknown, monitor mode tftp booted image" Config file at boot was "start up-config" ciscoasa up 16 mins 57 secs Hardware: ASA 5520, 1024 MB RAM, CPU Pentium II 1000 MHz Internal ATA Compact Flash, 256MB BIOS Flash unknown @ 0x0, 0KB 0: Ext: GigabitEthernet0 : address is 00ab.a72f.0100, irq 0 1: Ext: GigabitEthernet1 : address is 00ab.a72f.0101, irq 0 2: Ext: GigabitEthernet2 : address is 0000.ab6d.9802, irq 0 [code]...
This platform has an ASA 5520 VPN Plus license. Serial Number: 123456789AB Running Permanent Activation Key: 0x4a3ec071 0x0d86fbf6 0x7cb1bc48 0x8b48b8b0 0xf317c0b5 Configuration register is 0x0 Configuration has not been modified since last system restart.
We have ASA5510 at our perimeter and is running OSPF on inside interface.
1. Iam planning to add DMZ and adding th DMZ subnet also to OSPF process for advertising the DMZ dynanmically into network.
Any security risks?
2. Near future we will add BGP and a perimeter router (Internet router) with Dual ISPs and to advertise the default route from Internet router to OSPF domain- Planning to enable OSPF between Internet router and ASA outside interface and redistribute BGP into OSPF. Would like to know the security risks in doing so. Sample configs below for step1 & 2.
Current: ASA: inter Eth0/1 nameif inside ip address 10.10.10.1 255.255.255.0
