Cisco Firewall :: ASA 5505 / Understanding NAT For Both Version 8.2 And 8.3
Mar 1, 2013
ASA 5505 Version 8.2 or older nat (inside) 1 10.0.0.0 255.255.255.0nat (INTF4) 1 10.0.4.0 255.255.255.0nat (INTF5) 1 10.0.5.0 255.255.255.0nat (INTF6) 1 10.0.6.0 255.255.255.0nat (INTF7) 1 10.0.7.0 255.255.255.0global (outside) 1 209.165.200.235-209.165.200.254 netmask 255.255.255.224global (outside) 1 interface
I believe this setup does the following. The inside interface and interfaces 4,5,6,and 7 will translate using this line....
global (outside) 1 209.165.200.235-209.165.200.254 netmask 255.255.255.224
and if the addresses run out is will start using the ouside interface IP address to translate, so traffic is not disrupted and is based on the line of configuration.....
global (outside) 1 interface
My question, does it do this because of the order of the configuration..
global (outside) 1 209.165.200.235-209.165.200.254 netmask 255.255.255.224global (outside) 1 interface
or would it do it that way even if it was like this?
global (outside) 1 interfaceglobal (outside) 1 209.165.200.235-209.165.200.254 netmask 255.255.255.224
and if so why?Now let's convert the above configuration to ASA 5505 Version 8.3 or newer.
object network OUTSIDE-NAT-POOLrange 209.165.200.235 209.165.200.254object network INTERNAL-SEGMENTSsubnet 10.0.0.0 255.255.248.0nat (any,outside) dynamic OUTSIDE-NAT-POOL interface
My question is how does it know to use the outside interface as a backup when the OUTSIDE-NAT-POOL is depleted?Also why do I need to define the INTERNAL-SEGMENTS ? Doesn't the "any" in the (any,outside) take care of that?Also wouldn't the "any" in (any,outside) cover interface 3 or DMZ which could be an issue?
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Feb 18, 2013
I currently have 2 5505 SEC BUN as Primary/FO Firewalls and I am considering purchasing the ASA5510-AIP10-K9 for use as a dedicated IPS device. Looking at [URL] I see that for service updates, CON-SU1-AS1A10K9 is available for this product, providing "IPS Signature and Engine Updates" and "OS Updates."It is my understanding that in the ASA5510-AIP10-K9 there are 2 OS:
1. ASA OS
2. AIP SSM-10 OS
My question is: Are both the ASA and AIP SSM-10 able to receive "OS updates" with this service contract?
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Mar 14, 2011
I need to fullfill the below configuration which is working fine on my actual D-Link Netdefend firewall.
We have a range of IP assign by our ISP : 194.250.47.128/29
194.250.47.129 is the firewall IP and 134 the isp gateway.
We have 4 interfaces
- The local user interface: lan =192.168.170.1/24
- The servers interface : dmz =192.168.171.1/24
- The database interface : oracle=192.168.169.1/24
[Code]...
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Sep 23, 2012
What anyconnect version do I need on a 5505 so i can have people connect via iOS devices? Right now I have "anyconnect-macosx-i386-2.5.1025-k9.pkg" on there, will that work for iOS devices?
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Jun 20, 2012
I have a ASA5505 and currently running Version 7.2(4). I was wondering what the latest version of the software would available to me would be.
Here's a show ver
Cisco Adaptive Security Appliance Software Version 7.2(4)
Device Manager Version 5.2(4)
Compiled on Sun 06-Apr-08 13:39 by builders
System image file is "disk0:/asa724-k8.bin"
Config file at boot was "startup-config"
Hardware: ASA5505, 256 MB RAM, CPU Geode 500 MHz
Internal ATA Compact Flash, 128MB
BIOS Flash M50FW080 @ 0xffe00000, 1024KB
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Jan 20, 2013
I've have an ASA 5505 with a inside network vlan1 (192.168.0.0/24) - i've configured an IPsec VPN profile and a VPN network of 192.168.0.50/24. I can through my VPN tunnel access inside hosts on vlan1 - but not ASDM on the ASA (192.168.0.1). Under management i've added the VPN network of 192.168.50.0/24 to have access to ASDM, but still does not work.
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Jan 24, 2012
I'm trying to configure UC-Proxy using an ASA 5505 with software version 8.0.4.I was following the instructions in DOC-5704 and ASA 8.0 CLI.I don't have USB security tokens in UC solution, instead I'm using IP phones Cisco 7961 with MIC.I configure all the items as the documentation says but when I restart the phone outside the Firewall, the 7961 don't registrate with the Call Manager.Checking the troubleshooting I found that it's possible certificates problems but I don't know if I need to do something in phones.
I would like to know if there is any consideration when the UC proxy works just with MIC.The outside phone is a Cisco 7961 configured with static IP address and TFTP address of Call Manager (static NAT in ASA).
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Mar 20, 2012
I just upgraded my firewall to ASA 5505. Now, my original static ip address cofiguration is gone. Apperantly, Cisco went away from static ip address to something like nat (inside,outside) dynamic interface. how to create a static ip address under version 8.4? By the way, I am sharing what my configuration used to look before upgrading.
!
hostname cisco-asa
domain-name default.domain.invalid
names
!
interface Vlan1
nameif inside
security-level 100
[code].....
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Feb 15, 2010
Showing Your firewall has a version number null which is not supported by ASDM 6.2(5). I received this error when trying to run asdm on my asa 5505. I upgraded image and asdm trying different versions. I used many different versions of java all to no avail.
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Nov 20, 2011
I am now going to configure IPSec VPN connection for Cisco ASA 5505 (Version 8.4)
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Nov 22, 2012
I have upgraded an ASA 5505 to 9.0(1) as I would like to use ipv6 version of dhcprelay. That said, I am unable to obtain a global unicast address but the link-local address is able to communication with the ISP's gateway/DHCP provider which I hope will allow v6 dhcprelay provide internal clients with IP's from the ISP. Trouble is, unsolicated inbound ICMPv6 messages from the ISP's gateway are being dropped on the way into outside interface.
%ASA-3-313008: Denied IPv6-ICMP type=129, code=0 from fe80::201:5cff:fe3b:3c41 on interface outside
%ASA-3-313008: Denied IPv6-ICMP type=131, code=0 from fe80::201:5cff:fe3b:3c41 on interface outside
%ASA-3-313008: Denied IPv6-ICMP type=131, code=0 from fe80::201:5cff:fe3b:3c41 on interface outside
[Code]...
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Oct 10, 2011
Any document which expalins what you need to know when looking at purchasing an ASA5505. Which clearly describes the verious permitations and combinations of these lovely little boxes?
I recently purchased a basic: ASA5505-BUN-K9
I realise now this comes with 10 internal users, 2 ssl and no anyconnect mobility. All these can be purchased as additional licenses.
Its my understanding that to support unlimmited Internal/Inside hosts - I need to purchase the L-ASA5505-SEC-PL (Security Plus License)
1) What is the model I should go for if I want to support unlimmited interneal. Can a 5505 be purchased with with security plus?
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Apr 3, 2012
provide me with the important links which can show me how to do the software upgrade for my ASA 5520 ver 7.0(1) to ver 8.4 ? as well as the ASDM
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May 10, 2011
i am using Cisco ASA 5510 with ASA Version 8.0(4) and memory 256MB. me to Upgrade it to 8.3
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Jan 23, 2013
I have been using ASDM on a "Cisco Adaptive Security Appliance Software Version 8.2(5)" for a long time and in order to route packets among the interfaces without NATting the packets, I have always been using the function "Add NAT Exempt Rule" under "Configuration -> Firewall -> NAT Rules". Everything has always been working fine.
Now I am trying to use ASDM on a "Cisco Adaptive Security Appliance Software Version 9.1(1)" and I cannot find how to do the same operation: the "Add NAT Exempt Rule" option is no longer available and the only way to make the traffic passing through seems to be NATting it on the OUTSIDE interface.
where I am mistaking? My goal is to let the traffic passing through from the inside interface to the outside interface without being translated.
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Feb 8, 2012
I want to configurate cisco ipsec vpn client at asa 5505. At my asa the software version is 8.4. Any link or some material to config ipsec vpn client at asa 5505 version 8.4.
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Apr 23, 2013
On the downloads page there's a 9.0.2.ED listed as the 'latest' but then if I expand the '9' below it I get to 9.1.1.ED. Which one is the actual latest? is there any way to tell the one that is not an 'interim' version I think 9.1.1 is also listed under interim?
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Jul 13, 2012
basic step to blocking site on ASA 5505 version 8.2(1) base license using CLI
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Feb 22, 2011
I use a ASA 5510 and a ASA 5505 and want to connect 2 networks via VPN ASA software version is 8.41. Network 1 has address 192.168.90.0 Network 2 has the address 192.168.5.0 I use site to site VPN wizard on both asa and create the VPN connection. do I need to create acl after that?the PCs on network 1 must have access to a resource in the network 2 how do I create static routing to connect the both Network.
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Sep 14, 2009
McAffee scan of acs 1113 appliance running the 4.2 build 124 patch 12 version reports that a medium vulnerability exists because the system has SSH version 1. Any way to specify only version 2 or turn off SSH?
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Mar 5, 2013
I am currently migrating a netscreen firewall to a asa 5515 version 8.6 The issue is setting up the management connectivity.
basically the management IP of the cisco asa is not advertised. But, we want to route a management IP through the management interface to interface Gi0/2.
so IP of management interface is say - 216.10.100.10. and the IP of the inside interface is say - 198.1.1.10/24 on our router we have a static route sending 198.1.1.0/24 to next hop of 216.10.100.10 (management interface of cisco asa).
On the Cisco ASA can I send the traffic to the inside interface and manage the firewall via ssh that way?
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May 14, 2012
I'm trying to install an ASA 5510 transparent firewall using ASA version 8.4(3)9 but I don't understand how traffic will ever pass through my firewall if both interfaces are on the same sub net(V lan) as the host and it's default gateway? The reason I'm doing this is were installing UAG (or Direct Access) and the UAG appliance need to have public IP's but still be behind a firewall (see attached diagram).
Looking at the documentation (which all seems to be for 5505's running 8.2) it almost seems like i need to have the transparent firewall 'in-line' to the ISP router?, but this router services another IP address range on another v lan for other (routed) firewalls (not shown on diagram) so putting it 'in-line' is not possible. Surely this can't be the case can it? If not how is it supposed to be cabled up and configured so packets go through the firewall?
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Mar 15, 2012
How are asa5540 in high availability mode upgraded for their versions.
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Dec 26, 2012
configuring NAT on intranet firewall. here is the my topology:
DMZ Network - - - - - - - - - External Firewall - - - - - - - - - Internet
|
|
|
Internal Network - - - - - - - - - Internal Firewall
1) I can Ping the intneral host from external firewall, internet firewall and DMZ network
2) Both ASA's are running OS Version 9.0(1)
3) ACL used permit IP any any, on both (i.e inside and outside)
NAT configuration on Internal Firewall (Identity NAT)
object network MGMT-SRV-INSIDE subnet 10.10.10.0 255.255.255.192
object network MGMT-SRV-identity
subnet10.10.10.0 255.255.255.192
object network MGMT-SRV-INSIDE nat (Inside,Outside) static MGMT-SRV-identity
[code]....
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Oct 11, 2011
I would like to know how can I block a ip address from the CLI at the Cisco PIX Firewall Version 6.3(4)
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Dec 8, 2012
I am currently trying to understand Subnetting via CCNA. My progress is going well,I understand the class below:
Class A 0-127 Max IP 2^24 = 16777216
Class B 128-191 Max IP 2^16 = 65536
Class C 192-223 Max IP 2^8 = 256
However I have seen an example from an ip calculator website, and noticed this :
Address: 192.168.1.0 11000000.10101000 .00000001.00000000
Netmask: 255.255.0.0 = 16 11111111.11111111 .00000000.00000000
Wildcard: 0.0.255.255 00000000.00000000 .11111111.11111111
=>
Network: 192.168.0.0/16 11000000.10101000 .00000000.00000000 (Class C) - I would have thought this would have been Class B?
Broadcast: 192.168.255.255 11000000.10101000 .11111111.11111111
HostMin: 192.168.0.1 11000000.10101000 .00000000.00000001
HostMax: 192.168.255.254 11000000.10101000 .11111111.11111110
Hosts/Net: 65534 (Private Internet)
Is this an invalid IP/masks as the max hosts is 65534 (which should be class B?). If so shouldnt the IP address range from 128-191- eg 172.16 (I know that CIDR is the amount of 1's. ).What calculates the class is it the netmask or the range of the first octet?
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Jul 19, 2012
I have four networks:
172.19.0.0/16
172.20.0.0/16
172.21.0.0/16
172.22.0.0/16
I understand that the summarize route is 172.16.0.0 (255.248.0.0)However I'm trying to understand which other networks fall under this route and how
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Jun 27, 2011
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Dec 22, 2010
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Is there any command I can use to verify if this device is really what I paid for? what can can I check for in the sh inv and sh ver commands? I don't see any information from these commands.
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Mar 20, 2011
Understanding and configuring windows gateway
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Feb 23, 2011
When I connect to a public wi-fi connection (e.g. library, hotel, Starbucks), am I sharing the same IP address?
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Aug 19, 2011
Looking at the logs RV220W I can read the following lines:
[rv220w]Fri Aug 19 18:28:54 2011(UTC) [rv220w][Kernel][KERNEL] Clearing the ISR a800000003378400
[rv220w]Fri Aug 19 18:30:39 2011(UTC) [rv220w][Kernel][KERNEL] Clearing the ISR a800000003378200
[rv220w]Fri Aug 19 19:23:04 2011(UTC) [rv220w][Kernel][KERNEL] Clearing the ISR a800000003378e00
[ code] ....
What are they?? and what should be done ????.
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Oct 28, 2012
I am a D-I-Y type of guy and have managed to setup Apache on my LAN and make it accessible via WAN over port 80 and Tomcat on port 8080.I aim to possibly get a home web server up (will calculate the costs), but I need some questions answered about networking.
My understanding on ports are that they can be a risk if left open (which I have done) if there is no service or application listening on my side on those ports.So I take it that leaving those ports open and removing the services or applications that run on my side for these ports is a major security risk?
I noticed though that Xampp (1.8.1) does not allow requests over WAN unless I set my password for Apache. Does setting this password imply that Xampp is safe to use in a production environment?
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