Cisco Firewall :: ASA5520 9.0(1) - SDM Screen Shot Of Dynamic NAT Entry?
Nov 18, 2012
I have an asa5520 runing 9.0 that I want to setup for simple NAT, i,e 4.3.2.1/30 on the outside 192.168.1.1/24 on the inside with dynamic NAT outbound. The new IOS has thrown me for a loop.. I have everything working except the NAT. Any SDM screen shot of the Dynamic NAT entry? even if the IP's are different, I can figure it out...
Also, is there a way to make the unused ethernet interfaces gig0/2 and 0/3 into switch ports on the internal net? (or VLAN like you could do on the 5505)?
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Jun 19, 2011
this is ASA5520 associate with 8.4(1). very simple scenario , three ports: inside . outside . DMZ my problem is how to use network object NAT to perform Regular Dynamic PAT and Identity NAT.
for example, this is my configuration
**** first i configured Regular Dynamic PAT****
object network myinside
subnet 10.200.11.0 255.255.255.0
nat (inside,outside) dynamic interface
**** then , i met problem when i want to make identity NAT between inside and DMZ****
**** if i add below CLI , the first nat line will be replaced ****
**** SO IF I ADD THIS****
[code]......
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May 31, 2011
Our firewall expert has gone off on long term illness leave and I am trying to pick up the pieces :-(
We have an ASA 5520 (local office) talking to another ASA (remote office) via a VPN Tunnel.
My 1st problem is that I cannot ping from my inside network (local) to the outside interface of my remote ASA.
My 2nd is that I have debug enabled on my rules but am not logging anything.
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Jan 26, 2012
I have a requirement to NAT a spare address on the same subnet range as one of the firewall interface - however, because this is not allocated to a physical interface, there is no mac entry in the arp cache. the other end of the link from the firewall is connected to a router which has no idea how to reach this "virtual address" - again because there is no entry in the arp cache I have tried to put a static arp entry into the firewall but this doesn't appear to work either. Should I be using a mac address form a physical interface or can I create a dummy mac for this - If the router can't see the ip address, then users will not be able to target this address - so that the firewall can NAT to the real outside address.I have tried routes to null0 on the router and static arp entries on both devices but the user just times when trying to connect to 10.2.7.11 (nat to 10.2.32.11)
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May 1, 2013
is there a way on a WLC5508 to push the same configuration on multiple APs in 1 shot?I need to change the High Availability settings on most of the APs (not all). And the only solution i find is to do 1 by 1...
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Jul 17, 2012
I am having peculiar issue in my setup. I recently replaced my ASA 5505 (8.2.1) with ASA 5510 (8.4.3). Everything works fine for a while suddenly I see some of the servers will not be reachable from the LAN all the servers gateway is my switch. If I check on my Dell switch the particular server's arp entry on the connected port is same as ASA physicall MAC. If im reverting to 5505 ASA everything goes smooth without any issue.
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Dec 16, 2011
I'm configuring up aa ASA-5510, and I have several interfaces, some of which include:
interface Ethernet0/0.200
vlan 200
nameif SITECORP
security-level 90
ip address 10.1.4.1 255.255.254.0
!
[code]....
This definitely confuses me, because SITECORP has an inbound access-list of permit ip any any.
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Jan 12, 2011
I have a client in a workgroup environment. They are a small company with perhaps twenty systems. Their infrastructure consists of a Dell Switch, a Cisco ASA-5505 which hands out the DHCP and a router. And that's that.They have been using an external IP as their DNS Server to get out to the Web. However, they now want to add an internal Linux-based DNS server.In looking through the ASA-5505 today I noticed a field for DNS enteries. Is this where the IP for this new internal DNS Server (in the secondary DNS field) would go?If so, would it be necessary to reboot the ASA-5505 for this change to take effect?
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Nov 12, 2012
I've attached a document showing how this network is designed. A client on a guest vlan behind the ASA, nat'd to one address on the public subnet, needs to be able to get out to the internet, and still come back in for specific services, such as OWA, via the IP which the mail server is nat'd to. The drawing is pretty explanatory. Do I simply need to create a NAT statement and ACL to allow that client out and back in, or do I need to set up hairpinning? I'm working with a Cisco ASA 5505 Version 8.4(4)3.
Note: The drawing has public IP's substituted with 1.1.1.x with final octet being accurate.
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Aug 18, 2011
..how many PCs are allowed to connect to the printer via printer sharing? Is it unlimited?
..the printer are connected to the main PC
printer : Canon Laser Shot LBP-1210
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Dec 22, 2011
With regarding to the firewall ASA5520, i'm using it in my network, all the confiuration are properly configured and working but with the use of proxy address in internet explorer(e.:206.53.155.129/3128) all the blocked contents as easily accessible simply it bypass all the network through firewall.so will u guide me to block the proxy servers.
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Aug 22, 2011
I have two asa 5520 firewalls. one at my primary data center connected to our production Internet feed, and one at my fail over data center connected to a backup internet feed. I was wondering if there was an easy way to keep the firewall rules in sync between the two firewalls. We have failover with our isp that will move our public facing address block from our primary site to our dr site in the event of a disaster so the ip addresses will not change if we were to have to fail over to the DR site. currently i just have to do any changes that i make on the fail over server but would like a way to at least simi-automat this if not fully automat this so that i can eliminate the possibility of human error of a change happening at primary but never getting don at DR.
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Feb 7, 2012
I can't figure out why the ASA cannot send traffic to the internet with the below config. What did I do wrong?
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Feb 16, 2012
I can't figure out why the ASA cannot send traffic to the internet with the below config. What did I do wrong?
interface Ethernet0/0
nameif Outside
security-level 0
ip address 4.28.x.x 255.255.255.252
!
interface Ethernet0/3
[Code]...
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Feb 24, 2013
its possible to have same dynamic translation within 2 different networks like:
interface gig 0/1
1.1.1.1 255.255.255.0 (LAN Connection w/ DHCP enabled)
inteface gig 0/2
2.2.2.1 255.255.255.0 (Wireless Connection w/ DHCP enabled)
Actually, the scenario was 1.1.1.1 is my LAN connection and 2.2.2.1 are my Wireless connection.
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Oct 5, 2011
I need to create a vpn tunnel between my Cisco 837 having a dynamic IP and my Firewall (Static IP).
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Apr 11, 2011
I have devices on Inside interface of ASA that need to get to Internet to get ntp. Hence I want to set up dynamic pat (interface overload) which 8.3 style would be
-object network obj_NTP-DEV
-host 192.168.1.250
-nat (INSIDE,INTERNET) dynamic interface
But I need to limit nat to only Internet destined traffic on ntp port not all ports for traffic from 192.168.1.250.I'm not using this nat set up to control outbound access - I also have incoming RA VPN tunnels to the box and traffic from these sources need to be able to get to 192.168.1.250 and the above simple set up would break that access as all traffic involving 192.168.1.250 would get nat'd
Reading the doco I've sent myself round in a loops trying to figure how you are meant to do such a " Dynamic Policy NAT (overload)" call it what you will config in 8.3
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Sep 25, 2011
I have a asa5520 with five Internet IP.One for the internet interface and the others are static maped to dmz hosts. It runs rightly until yesterday.Now it will lose the connection to the gateway many times everyday and the dmz hosts can not connect to internet any time. configuration(simplified):
!
interface GigabitEthernet0/0
nameif internet
security-level 0
[Code]....
I called ISP to check,when ISP clear their router's ARP, the asa will lose the connection at the same time and then the ISP's router couldn't learn the ASA's MAC. After I 'clear arp' manually,The ISP's router can learn the ASA's MAC and the connection recovered,but the DMZ's cann't access internet still (of course,There is no problem between DMZ and ASA ,I ping the internet gateway from DMZ host and can not get any reply.).
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Oct 3, 2011
We have 2 x ASA5520 and I upgraded this to 8.2.2 last year, I see 8.2.5 and now 8.4 is out. If we are having no issues, is it best just to leave it as it is? I can see a couple of features I may find useful in 8.2.5, but 8.4 seems like a huge jump and a risky one too.
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May 8, 2011
I have one firewall ASA5520, are very slow
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Mar 7, 2011
I am trying to introduce an ASA5520 to my network based on the following diagram: ISP Internet ------> ASA5520 ------- > Cisco Router ------> LAN. The problem is I cannot ping the ASA from the LAN. I can ping it from inside the router. I already allow ICMP within ASA. If i remove the cisco router and replace it by a swich, I can ping the ASA with NO problem.
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May 16, 2011
We want to use ASA5520 but both Firewall have different CPU. One has CPU Pentium 4 2400 MHz and another has Pentium 4 Celeron 2000 MHz. Can it be configured for replica / failover?
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Apr 19, 2011
We have 2 firewalls on PIX facing the Internet and connected to interface e1 (behind it) an ASA version 8.3 Both the PIX (Firewall facing) and the ASA are on the same subnet.
By using Routing statements and statics I have been able to reroute specific traffic to the ASA5520 version 8.3 Now I need to inverse the 2 devices. The ASA5520 will be facing the Internet and the PIX will be behind it.Unfortunately the ASA5520 is refusing to route the traffic to the PIX. The access-lists are open accordingly and a NAT on the ASA has been created.
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May 31, 2013
i have my router connected to ISP then my router directly connected to my ASA5520....i use also ASA5520 as my DHCP Server and i was wondering with the DHCP Server function of ASA 5520 because if i use the ASA 5520 LAN ip ...all workstation will not be able to browse anything from the internet unless i use my ISP DNS IP which they gave me?
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Sep 4, 2012
Get the following log message on secondary ASA console output when turning on the ASA failover function?
"Mate's service module (CSC SSM 6.6.1125.0) on slot 1 is different from mine (CSC SSM 6.6.1125.0)"
After that the secondary cannot join as a failover unit and shows in disabled status.We have the same model ASA & CSC module and each pair of them are in same firmware (CSC 6.6.1125.0 with ASA5520 8.4(4)1), when I shutdown both the csc modules, the ASA failover works fine.
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Dec 15, 2012
I am using a squid proxy behind an ASA5520 firewall to collect the users to the internet. Squid is just necessary to log what is going on in order to find a quick solution when the internet slows down.
Considering that I have unlimited licenses and I would like to get rid of squid, I wonder if the ASA has some functionalities to track which websites are being used and how much traffic is generated. If there is not, I would like to know if Cisco offers a good product to replace Squid.
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Jun 8, 2011
Upgraded an ASA5520 from 7.x to 8.4 in one step? Release notes for 8.4 state that you can "...upgrade from any previous release directly to 8.4..." I've read the previous version release notes and see the various changes in NAT etc that 8.3 made.
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Jul 5, 2011
My customer had 2 asa5520 version:8.0(5)20 and LMS 4.0.1.Two Firewall are "unknow" on LMS, why ?Normally, LMS manages ASA with version 7 min.
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Jan 5, 2012
Any limits on the number of IPSec sessions an ASA5520 can support over a DSL connection?
Currently, as we increase the number of IPSec VPN tunnels, our LAN switches connected to the DSL/ASA start seeing CRC/input errors. Tried different LAN ports for both DSL/ASA connections - same reults (CRCs and errors). Swapped ASA for PC running 1 IPSEC w/HD video and no issues.
VPN connection bandwidth demand 50% of DSL capacity, so not exceeding DSL bandwidth. Errors get so bad that all VPN sessions drop - sometimes VPN sessions re-establish while other instances a DSL modem reboot is required.
cause of LAN switch connections seeing errors with 4+ VPN sessions established on ASA across a DSL Internet circuit?
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Feb 19, 2012
have 2 inside networks:
object network INSIDE_10.6
subnet 10.6.0.0 255.255.0.0
object network INSIDE_192.168
subnet 192.168.0.0 255.255.255.0
I grouped these 2 into 1 object-group:
object-group network INSIDE
network-object object INSIDE_10.6
network-object object INSIDE_192.168
Public IP address used for PAT:
object network PAT
host 152.x.x.x
I used the following statement to create Dynamic PAT to public IP address:
object network INSIDE_10.6
nat (any,any) dynamic PAT
object network INSIDE_192.168
nat (any,any) dynamic PAT
Is that correct? Also I'm using one public address to PAT both inside networks. Is there any dvantage of using 2 different ones, so each inside network would be PAT to its own address?
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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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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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Jun 3, 2012
I have a site with an ASA5505 and 2 isp connections but the catch is the 2 isp's are giving me a dynamic IP so I am unable to use this [URL]
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