Cisco Firewall :: Configuring ASA 5505 Firewall
Sep 21, 2012
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.
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Mar 30, 2012
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)).
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Jun 6, 2011
I am planning on building the configuration on my ASA 5505, and then distribute that same configuration to several places on ASA5505's.
What is the best way to do this? Screen dumps of the ASDM. Copy the running-configuration from a text file into the ASA5505. TFTP the running-config.
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Apr 19, 2011
I have 2 ASA 5505 firewalls and 1 cisco 3560 switch.
One ASA 5505 firewall and cisco 3560 switch located at SITE-A. Another ASA 5505 firewall located at SITE-B.
Below is the my connectivity:
Site-A IPSec VPN Site-B
cisco 3560 <----------------------------> ASA 5505<------------------------------------------------------------------------------------> ASA 5505
I planned to create 5 vlans in my cisco 3560 switch. these 5 vlans needs to have internet and needs to access Site-B.
I will write on dafault route to firewall in my cisco 3560 switch. Is ASA 5505 supports this scenario??? If it is then how to configure ASA 5505 firewall.
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May 11, 2011
I have ASA 5505 with base licence. I configured NATing and VPN(site to site). All are working fine.My ASA is base license so i created 2 VLANS, one is inside and outside.Inside i am using 10.91.40.0/24 serie IP addresses.Below are the new requirements that i need to configre:
1. First 30 IP addresses only needs internet directly.( Servers and Management)
2. If remaining IPs likes to use web then traffic needs to forward one proxy server( where he gives user authentiation)
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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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Jun 10, 2012
I need configuring RDP access to my local server from a remote location on my Cisco ASA 5505 Firewall.I have attempted to configure rdp access but it does not seem to be working for me. How to modify my current configuration to allow this? I need to allow the following IP addresses to have RDP access to my server: [code] The other server shows up as 99.89.69.334 but is working fine.
I already added one server for Static route and RDP but when I try to put in same commands it doesnt allow me to for this new one. My configuration file and what are the commands i need in order to put this through. Also, if there are any bad/conflicting entries. Also I have modified IP information so that its not the ACTUAL ip info for my server/network etc... lol for security reasons of course.Also the bolded lines are the modifications I made but that arent working. [code]
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Dec 26, 2012
configuring NAT on intranet firewall. here is the my topology:
DMZ Network - - - - - - - - - External Firewall - - - - - - - - - Internet
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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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Sep 7, 2011
How I can actively monitor the interfaces and overall status of 2 x ASA 5500s in an Active/Standby configuration?
I can setup monitoring of the interfaces on the Active member but I'm not sure how to manage the Standby member?
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Apr 24, 2012
We were having a discussion of ios firewall vs. asa for smaller clients(less than 50). On using ios firewall(zbf or cbac)and an asa 5505/5510. One of the arguments brought up on using ios firewall on the router is that a router will do an ip sla failover. I have configured a number of isr's for this and i know it works good.
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Feb 19, 2012
I have a Cisco ASA 5505 in our office. We are currently using Interface 0 for outside and 1 for inside. We only have 1 Vlan in our environment. We have two three switches behind the firewall. Today the uplink to Interface 1, to the firewall, on the switch went bad. I want to setup a second inside interface on the firewall and configure it as failover incase this happens again. I want to attach it to the other switch. Can I do this? If so, what do I need to do? would it only be a passive/standby interface?
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Aug 23, 2011
setting up an ASA 5505 to be used as a firewall between a BT internet router(BTNet service) and a Cisco 3560 Lan switch. BT have presented me with a cisco 3800 series router with the following details:
Network Address Network Mask BTnet NTE Router LAN Address
There are 2 Gigethernet ports on the back of the router port Ge0/0 is connected to the BT NTE and the status light is flashing green. Int ge0/1 is connected into port int e0/1 of the ASA but i am unable to get any connection.
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Feb 27, 2013
I'd like to see some REAL LIFE comparisons of ASA firewall throughput (a bit like this one for ISR G2 Routers - [URL].
The reason I ask is that I recently upgraded a firewall from an ASA5505 to an ASA5520 on a small network where the only outside connectivity was a single 10meg Internet circuit with an IPSEC VPN (not landed on the firewall but on a router) to another site.
When I swapped out the firewall the users noticed a big improvement. The firewall is not doing anything out of the ordinary - no IPS or VPN, just standard state full inspection.
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Dec 22, 2011
Trying to set up a asa 5505 in transparent firewall mode. I cannot set the management ip address:
ciscoasa> enable
Password:
ciscoasa# config term
[Code].....
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May 3, 2011
I have been working with ASA 5510,20,40,80 but not with 5505 this vlan and its interfaces are quite confusing.Just want to know how it works and its connectivity to Cisco Switch.Do i have to put the interface of the switch in the same vlan as i am creating the interface vlan in firewall ?Now the switch port connecting to this Eth1 interface should also be in the same vlan ? i.e vlan3 ?? or it will be in trunk ? The default configuration shows the eth0 with no access vlan and interface eth1 with access vlan 2... does it mean the eth0 is in vlan1 ? (Nativ Vlan ) ???
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May 28, 2012
I have a cisco asa 5505 firewall. Is it possible to block secure websites in it like [URL]? I have already tried regular expression filtering but it filters only http traffic.
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Feb 26, 2011
I am trying to configure our ASA 5505 so that our users can access our ftp site using [URL] while inside the firewall. Our ftp site is setup so that you can reach it by either browsing to the above url or by browsing to ftp://99.23.119.78 but we are unable to access our ftp site from either route while inside the firewall. We can access our ftp site using the internal ip address of 192.168.1.3.
Here is our current confguration:
Result of the command: "show running-config"
: Saved:ASA Version 8.2(1) !hostname ciscoasaenable password qVQaNBP31RadYDLM encryptedpasswd 2KFQnbNIdI.2KYOU encryptednames!interface Vlan1nameif insidesecurity-level 100ip address 192.168.1.1 255.255.255.0 !interface Vlan2nameif ATTsecurity-level 0pppoe client vpdn group ATTip address pppoe setroute !interface Ethernet0/0switchport access vlan 2!interface Ethernet0/1!interface Ethernet0/2!interface Ethernet0/3!interface Ethernet0/4!interface Ethernet0/5!interface Ethernet0/6!interface Ethernet0/7!ftp mode passiveobject-group service DM_INLINE_TCP_1 tcpport-object eq ftpport-object eq ftp-dataport-object eq wwwaccess-list ATT_access_in extended permit tcp any host 99.23.119.78 object-group DM_INLINE_TCP_1 access-list ATT_access_in extended permit tcp any interface ATT eq ftp access-list ATT_access_in extended permit tcp any interface ATT eq ftp-data access-list ATT_access_in extended permit tcp any interface ATT eq www access-list 100 extended permit tcp any interface ATT eq ftp
[code]....
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Nov 21, 2012
New to the ASA 5505 8.4 software version, but here is what I'm trying to do:
-Single static public IP: 16.2.3.4
-Need to PAT several ports to three separate servers behind firewall
-One server houses email, pptp server, ftp server and web services: 10.1.20.91
-One server houses drac management (port 445): 10.1.20.92
-One server is the IP phone server using a range of ports: 10.1.20.156
Basically, need to PAT the ports associated with each server to the respective servers behind the ASA 5505. Is anything missing from this config? Do I need to include a global policy for PPTP and SMTP? [code]
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Apr 27, 2011
I'm integrating a Cisco ASA5505 with a Websense proxy. I have a configuration setup where we have four routers which are used for Internet access. There are two VLAN's - Guest and Private. What I would like to achieve is making the use of available bandwidth by load distribution via GLBP, and filtering users web traffic. Two routers will be used for a GLBP group in one VLAN, and the other two routers will be used for GLBP in another VLAN.The users are connected to a Cisco 2960 switch and are in their respective VLAN's. I'm planning a 802.1q trunk to a Cisco ASA from the 2960 switch, carrying both VLAN's.What I would like to know is if there is a CSC module (or similar) which has Websense installed on it, and if it is possible to setup the ASA5505 in transparent mode to filter the traffic in this way? Hopefully this would allow multiple users to take advantage of the additional bandwidth, and not be restricted by using a traditional proxy setup which where all web traffic would be originating from a single MAC address.
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Apr 30, 2012
I have an issue with my firewall,each time i configured a trunk port in the firewall and connect a sw 2960S with a trunk port also, all the interfaces in the Firewall go down ( virutal intertaces, inside, outside , dmz) , also another switch 3750 that is connected to another port in the firewall( access port only) it start to a new negotiation of spanning tree.What could be causing this problem? the firewall didnt sedn bdpdu i think the IOS of the firewall its a 8.2
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Jun 12, 2012
we are planning on connecting a new aquired company to ours soon?We will connect the remote site to the HQ via a D3. I've been told we will need to have a firewall between them and us for a time. I was thinking of terminating the D3 connection at the remote site of 80 users. Can I use the asr as a firewall as well, to protect the HQ from the Remote site - or should I use a seperate appliance?I was thinking of a asa5505 but, am concerned with bandwidth limitations of the box?
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Sep 11, 2007
I want to configure an ASA 5505 in transparent mode (7.x). Somehow, I got it to work.. but i need some kind of step by step description. I just want to connect it with outside on a route .. inside in my LAN. Its working now with one ASA. But in the Web Interface the Interfaces inside and outside are down.. but its working.
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Nov 11, 2011
When I upgrade the ios on switches, I just create int vlan1 assign it an ip and subnet, then tftp to my pc that is plugged into the switchport using the download-sw command.
I am not sure how to do this on the asa. Do I just plug my pc into port 0 which the documentation says is mapped to vlan 1 with and ip of 192.168.1.1? I tried this by making my pc's ip 192.168.1.2 but am unable to ping the asa. Do I have to change the security level or anything?
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Mar 18, 2011
I’ve been using a Cisco ASA 5505 Security Plus bundle for two years now without any problems. My previous Internet Service Provider was routing the external IP I was leasing directly through to my internal network without NAT which my ASA 5505 was working well with. Thus, I had configured my 5505 to provide NAT to my inside network which includes two subnets one for my workstations and internal "private" resources and a DMZ to provide access to my webserver, email server and two domain name servers; but restrict access to my internal; resources. i recently changed my ISP to Verizon FiOS (which is providing me with 25 Mb bandwidth at a fraction of the cost of my old T1) which is set up to provide 5 Static externally facing IP numbers for my email, webserver and name servers;. The problem is the Verizon router doesn’t support my use of the ASA Appliance (at least not the way it is currently configured. Verizon recommend I purchase a business class router and use it in place of the one they provided with my installation. With this in mind, I bought a Cisco RVS4000. I have configured it to use the primary external IP number and have internet access; however, the new router is providing NAT addressing which the ASA is in conflict with (they are both using the same NAT IP range). I'm assuming the ASA 5505 is expecting to have access to the external IP addressed (since that is what it was getting before) and NOT NAT address. How to configure the new router to either provide access to the five static external “real world” IP to my Cisco ASA Firewall. However, I just need to get my ASA 5505 back in the loop and would prefer to do this rather than go back to the Verizon router combined with a low end firewall. So, my questions are: Does the ASA 5505 expect real world External IP numbers? Or can it work with NAT addresses being fed to it from the router? And, if so, how do I configure the access rules and other items which are currently mapping to external numbers?
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Jan 6, 2013
when i am booting ASA firewall i am getting the following error.
<0>Kernel panic - not syncing: Attempted to kill init! and it stops and will not work. check below the whole log file
how can i solve this issue?
Log file:
Evaluating BIOS Options ...Launch BIOS Extension to setup ROMMON
Cisco Systems ROMMON Version (1.0(12)11) #4: Thu May 1 14:50:05 PDT 2008
Platform ASA5505
Use BREAK or ESC to interrupt boot.Use SPACE to begin boot immediately.
Launching BootLoader...Boot configuration file contains 1 entry.
[Code]...
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Dec 19, 2012
Over the course of the past three days, our ASA 5505 firewall has shut down twice. I looked through the Field Notices and it looks like this was a problem identified several years ago that was resolved for units built after June 1, 2007. The serial number on our unit is not in the "effected" range.
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Sep 26, 2011
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)
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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.
object network obj_any-18
subnet 0.0.0.0 0.0.0.0
object network obj_any-18
nat (inside,dmz1.005) dynamic interface
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.
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Mar 29, 2013
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).
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May 14, 2011
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.
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Jun 20, 2011
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?
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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 20, 2011
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
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