Cisco Firewall :: How To Configure ASA 5505 As DNS Server
Nov 15, 2011
I want to configure my Cisco asa 5505 as a dns server, so that when i configure any of my network systems ip address and use my firewall as a default gateway and dns ip, the system should be able to browse internet.
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Dec 23, 2011
Currently I have an ASA setup as a Firewall with 1 outside interface and 2 inside interfaces. Initially, the Guest interface was setup to receive DHCP from the ASA and everything was working. I'm adding router and a server for the guest interface and what I'm trying to accomplish now is the following: ASA 5505 > Airport Extreme with a public static IP (69.xx.xx.6), handling DHCP and NAT > Mac Server as DNS Server.Right now, when I connect to my Airport Extreme with any computer, I don't have internet. I don't understand what's wrong. My DNS Server has a reserved IP address: 192.168.226.2 and it's pointing to itself and forwarding the ISP DNS servers, the Airport Extreme is handling the DNS Server IP and the ISP DNS Server IP but I can't connect to the internet from the server. [code]
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May 9, 2012
We've just started with the ASA 5505. We do run a DHCP server on the inside interface, so it is in the same VLAN 1 as all of the clients. However, we cannot get it to work.We can't use DHCP Relay, as the ASA 5505 only allows to relay to DHCP servers in a different subnet.Or do we have to move the DHCP server to a different subnet. If so, how would we configure that scenario?
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Apr 28, 2011
So I have three ASA 5505 firewall. my firewalls we are in the test environment. I read on the net that when you have a situation like in my company where are headquarter and two offices, i should put in each branch office and headquarter one asa firewall and a firewalls should be configured as easyvpn.
VPN server is in headquarter and easyvpn's are in branch offices. i tried everything, but we could not configure them. maybe it's not a problem that in my test environment at my the external interfaces which have static addresses on these three firewalls, respectively serever 192.168.2.1, 192.168.2.2 and 192.168.2.3 client client. I seted firewalls by following the instructions, but does not work
[URL]...
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I solved the problem with the server as a remote access VPN. client workstations that are on the 192.168.2.0/24 network can access a local LAN via VPN. But when you put the ASA 5505 firewall. clients on the LAN side of the firewall can not access the VPN. I use software products Cisco VPN Client 5.0.06, but when I create a connection and try to connect to get an error secure vpn connection terminated locally by the client. reason 412: the remote peer is no longer responding.
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Aug 23, 2011
We have Cisco ASA 5505 with ASDM 5.2 We have one Proxy server in our Local Lab and pointed to Hosted service(Simple Signal)issue is, When our proxy server send register to hosted server, ASA change private IP and post with outside IP and src port as 1063 every time.
Here is debug log on real time monitoring.
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Aug 24 2011Â Â Â 05:21:19Â Â Â 302015Â Â Â 203.xxx.xxx.226Â Â Â 192.168.1.51Â Â Â Â Built outbound UDP connection 3774 for outside:203.xxx.xxx.226/5060 (203.xxx.xxx.226/5060) to inside:192.168.1.51/27014 (99.119.161.107/1142)
Aug 24 2011Â Â Â 05:21:19Â Â Â 607001Â Â Â 203.xxx.xxx.226Â Â Â Â Â Â Â Â Pre- allocate SIP Via UDP secondary channel for inside:192.168.1.51/27014 to outside:203.xxx.xxx.226 from REGISTER message
Aug 24 2011Â Â Â 05:21:19Â Â Â 710005Â Â Â 203.xxx.xxx.226Â Â Â 99.xxx.xxx.107Â Â Â Â UDP request discarded from 203.xxx.xxx.226/5060 to outside:99.xxx.xxx.107/1063
Here 99.xxx.xxx.107 is Our ASA Outside IP address 203.xxx.xxx.226 is Hosted server IP address. My ASA config is attached.
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Mar 27, 2013
I am attempting to set up failover dual ISP on a 5505 running 8.4(4) with the Sec Plus license. Everything i have been able to reference so far, points to old commands not available or relevant in 8.4
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For instance:
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global (backup) 1 interface
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
route outside 0.0.0.0 0.0.0.0 20.20.20.1 1
route backup 0.0.0.0 0.0.0.0 30.30.30.1 10
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What is the new syntax that should be used to mimic these commands? I have the sla and trach reachability configuration already set up.
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Mar 19, 2013
I am trying to configure an IPSEC vpn on an ASA5505 I setup an SSL vpn and it works fine, I can browse to the https: address log in and connnect to servers However when I try to setup the ipsec client access vpn it will not connect and I am getting the errors below I used the wizard for the initial configuration Looks like the inital IKE is being blocked or dropped?
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%ASA-7-710005: UDP request discarded from my external IP/35781 to external:ASA-external/500
%ASA-7-710005: UDP request discarded from my external IP/35781 to external:ASA-external/137
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Sep 14, 2011
I have a firewall Cisco ASA 5505, and currently it is a command line firewall. I want to configure ASDM so that i can use it as a GUI Web Base interface.I really don't know what to do. How can I configure ASDM on my firewall.
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Mar 20, 2012
Got new ASA5550, code 8.2.2 in flash, can't configure "nameif" or "ip address" on the interfaces: [code] These are all the options that I get! Another weird thing I noticed is "<system>" string in "show ver" top line: [code]
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Mar 18, 2012
I am absolutely new in the enterprise firewall world but I would like to start learning how to configure ASA 5505 and 5510. I did some research myself and I found that the material or the topic itself is a huge adventure (lots to read and understand). My company uses IOS versions until 8.2 due to the differences in the NAT-ting rules with 8.3 and 8.4.
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Mar 25, 2013
I have a test ASA 5505 at home. The DHCP IP address in my real home firewall is 192.168.1.x and as you are aware the default ip address in ASA is the same. how to configure the ASA.
In the link below there is an instruction, it seems it is working for everybody except me. I followed the instruction up and the only change was assigning the IP address, which I chose something other than 192.168.1.x But after the step of creating NAT, I do not have access to the internet. [URL] Also I followed the link below, but the revision of the ASDM in the instruction does not match with mine, so I was not lucky to figure the device.[URL]
1- How can I configure the ASA 5505 with an IP address different than 192.168.1.x (at home = no incoming static IP address = DHCP on subnet 192.168.1.x for the incoming internet) I have installed ASDM 6.3 on my laptop (From work) but when I connect to the ASA it wants to install ASDM 5.7.I tried to connect to the device through ASDM 6.3 and input the IP address 192.168.1.1It takes for ever and it does not connect to the device
2- How can I connect to the device by ASDM 6.3 or any ASDM with higher version than the original of the device?
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Dec 23, 2011
I want to configure multiple DHCP pool on ASA. that I create like
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int e0/2
no shut
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interface Ethernet0/2.10vlan 10nameif inside10security-level 100ip address 192.168.10.1 255.255.255.0
interface Ethernet0/2.20vlan 20Â Â Â Â Â Â nameif inside20 security-level 100ip address 192.168.20.1 255.255.255.0
dhcpd address 192.168.10.10-192.168.10.254 inside10dhcpd dns x.x.x.x y.y.y.y interface inside10dhcpd enable inside10
dhcpd address 192.168.20.10-192.168.20.254 inside20dhcpd dns h.h.h.h z.z.z.z interface inside20dhcpd enable inside20
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I have following query...
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1. int e0/2 work as trunk port, is it? any special confiduration require other than dot1Q?
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2. How can I configure inside interface? is it like,
   access-group inside_access_in_1 in interface inside10
   access-group inside_access_in_1 in interface inside10
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3. How can I configure static NAT ?
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4. How can i configured inside route?
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5. How can I configured default NATing?
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6. On which interface I access ASA? currently using inside interface.
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May 20, 2012
I have ASA 5505 with 8.4(2)8 software for one of my branch offices and I can't configure port forwarding.It seems to be very simple, but it's not working. I use my ASA as a gateway to the internet for users in office and for site-to-site IPSec VPN to HQ. I have pppoe-enabled outside interface, but ISP gives me static routable ip address. I have server behind my firewall and I should "publish" to the WAN some of its' tcp and udp ports, but I see that no packets forwarded through ASA. I tried to configure PAT as stated in official "Cisco Security Appliance Configuration Guide" through CLI and ASDM.[code]
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Nov 18, 2012
I have a closed network that is not connnected to the internet, just other sites that we want to communicate with. We have a cisco router connected to the outside interface on an ASA5505 and a cisco router connected to the inside interface on the same ASA5505. I have an inside interface that connects our management LAN, five separate DMZ interfaces with a separate LAN (VLAN) on each DMZ interface and the outside interface that connects to the other sites. Data is not allowed to mingle between the five DMZ's.Â
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Alll connections to the other separate nodes are handled with the router on the external interface. IPSEC GRE tunnels have been established between all sites and BGP routing has been verified. Pings are good between inside, dmz and external interfaces and between the DMZ's and the other sites, to include hosts on our local networks and hosts at the remote sites. Inter and intra traffic is enabled.
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When a remote site attempts an https connection, the initial ACK handshake makes it through the ASA5505, but the return SYN/ACK is being knocked down and I don't understand why (it is not because of ACL's, they are any any at this point).
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Why the return SYN/ACK to the remote site isn't getting through the ASA5505 outbound. Will probably have the same issue with FTP, but right now, just trying to solve one problem at a time.
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ASA5505 is in routed mode, not looking to NAT since the IP addresses in the DMZ need to be reached by their real IP address.
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Nov 1, 2012
I am trying to configure an ASA 5505 with a username and password. I set all the pass words: [code]
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When I reload the device it prompts me for the username, then the password and it fails and just asks for the username again. I have even tried to delete the username / password combo but it still prompts me for it. When I do password recovery the confreg is 0x00000001.
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Sep 16, 2012
[URL] I am not savy configuring ASAs at all and I can't get it to work. We are switching to a SIP trunk phone system and I am in charge of setting up the ASA to not only make it work but also make sure that there's packet priority or QoS.I've never configured something like this and I was giving another set of instructions to make sure that this is working:
[URL]
Configuration:
My configuration is very basic:
3 interfaces - Outside/Inside/Guest
ASA Version: 7.2(3)
ASDM Version 5.2(3)
Firewall Mode: Routed
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Solution: When I tried following the instructions on brian-kayser's blog I get an error when I'm sending the following command:
shape average
^Â Invalid marker
service-policy PRIORITY-POLICY
^ Incomplete commandÂ
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I think it's because my version of ASA doesn't have this functionality but I don't know.
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Jun 10, 2011
I am setting up a Cisco ASA 5505 first time for My organisation, I usually setup Cisco Router, I have 10 Static IP, & Have 6 Server (S-1, S-2, S-3, S-4, S-5, S-6), Traffic Should be pass through the ASA and is distributed to the destination server that is specified in the packet. LAN servers can be separated into discrete networks for security. For example, a private LAN for internal traffic accessed only via remote dial-in VPN sessions and Want to Configure DMZ for Server (S-4, S-5, S-6) that allows public web traffic.
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I have Attached My Network Diagram I have some question,
1:- Can we Configure Multiple Static IP On ASA 5505 ?
2:- If Diagram is wrong what change need to be done ?
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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 30, 2011
ASA 5505 and DMZ, I have a Base License.
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What do I need to do for access inside network to DMZ?
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I successfully configure, internet Access for DZM and inside network, web server can be accessed from internet, but I have problem to configure communication from inside network to DMZ.
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Apr 30, 2013
I'm trying to support a friend. They just switched to TWC Business Class from Megapath. They have a Cisco 5505 ASA and are trying to configure it to work with the new TimeWarner cable modem. But we can't get PCs behind the firewall out to the Internet.
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We think it should be a pretty simple config. They have the ASA connected directly to the modem. The modem is running DHCP, and we''ve configured the ASA to get its address via DHCP. We have a Windows server behind the firewall; it can't get out the Internet either. It's set up to be a DHCP server and is giving IP addresses to the PCs on the network.
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Laptops connected via wifi to a wireless router attached to the modem are able to connect to the internet, thus we know the modem is up and running fine.
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Here's our running config:
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ASA Version 8.4(1)!hostname ciscoasadomain-name opanslab.comenable password yYME2neTGgA0S1./ encryptedpasswd yYME2neTGgA0S1./ encryptednames!interface Vlan1nameif insidesecurity-level 100ip address
[Code].....
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Aug 30, 2011
I'm trying to learn Cisco ASA IOS commands, I have bought myself a 5505 ASA for my home network and plan to implement it. How best to configure it.
I have attached a diagram of how I want my network to look. The internet connection is via the Virgin Media cable modem.
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May 5, 2013
We have one Cisco ASA5515 firewall, I configured ftp mode to passive, inspect ftp in service, use anoother public to do NAT with ftp server, and also configued ACL in outside interface, but I failed to access the ftp server from internet use that public ip address, no problem to acces the ftp server use its inside address in LAN.
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Oct 13, 2011
I am using a fiber optic connection. I want to connect it directly to ASA5510. A WLC2504 will be connected to ASA and one Aironet AP will be deployed at first. (At this moment I am not using any Windows server but in near future I will need to deploy Windows Server 2003 in my corporate network) My questions are:
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Can I configure ASA as DHCP server for my LAN?
Can I configure WLC as DHCP server for my LAN?
If we can configure both then what is the best practice from above two options? (I am new to Cisco stuff and first time user)
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Feb 6, 2013
I have a Cisco ASA configured for Any Connect clients. I also want to pass 443 traffic back to an internal web server, but not sure if I can do this since the Any Connect clients are already connecting over 443 to the ASA, right?
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Jul 9, 2012
We have a Cisco ASA 5505. As of yesterday we could no longer access our web server (the web server is hosted off-site). Pinging the DNS address and direct IP (from the firewall and a PC) both return no response. Pinging the IP from the T1 router responds properly, meaning the router can access the web server, but the firewall cannot. Accessing the web server has never been a problem, and no configuration changes have been made to the network/firewall. Other locations can access the web server just fine.
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Feb 24, 2013
I have a Cisco ASA5505 and windows DHCP server, how do I add this external server to ASA so my PC clients can get DHCP from this server?
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Feb 11, 2013
I'm configuring a Cisco ASA 5505 ASA Version 8.3.1 I want to publish my web server is in the DMZ (10.30.30.1) and server address is 10.30.30.30 but it still fails.I have only one public IP, and hope that when they call the Public IP, my web server appears, another problem I have is that when I assign the public IP to my interface OUTSIDE my LAN loses internet connection.I have to do to publish my web server and the LAN computers have internet access?
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Jul 8, 2012
Instead of using a IP address I would like to use a host address that points to a NTP pool.An example would be:ntp server 0.north-america.pool.ntp.org Can this be done on the ASA series?
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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 1, 2012
I get the following message when appling "DHCPD ENABLE INSIDE"Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â
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DHCP: Interface 'INSIDE' is currently configured as CLIENT and cannot be changed to a SERVER by a SERVER feature
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 This is an ASA 5505 Running 8.2.
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May 25, 2011
I would like to allow users from network 10.132.23.0/24, 10.132.33.0/24, 10.132.24.0/24 access to our SQL server(192.168.1.7) located on the inside interface(192.168.1.0/24 network) Those networks (10.132.0.0/16) come from the DMZ interface.
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Feb 7, 2013
: Saved
: Written by enable_15 at 03:51:29.049 UTC Mon Feb 4 2013
ASA Version 8.4(4)1
host name cisco asa
enable password xxxxx encrypted
password xxxxx encrypted
names
interface Ethernet0/0
switch port access v lan 100
interface Ethernet0/1
interface Ethernet0/2
[code]...
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Mar 24, 2011
I have a PIX-515E that I'm trying to configure for what I thought would be a simple task. I've been playing with VMWare ESXi on a Dell PowerEdge 1850 in a lab environment. The server's IPMI is bound to one of its two physical interfaces, which I've connected to Ethernet 1 on the firewall. The interface has the following configuration:
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PIX Version 7.2(4)!interface Ethernet1 nameif FrontEnd security-level 40 no ip address!interface Ethernet1.2 vlan 2 nameif IPMI security-level 90 ip address 172.16.0.161 255.255.255.224
The server's baseboard manager has been configured to tag its traffic on VLAN 2, priority left at 0 (default), and its IP address appears in the firewall's ARP cache; however, here's what I get for a ping response: Sending 5, 100-byte ICMP Echos to 172.16.0.164, timeout is 2 seconds:?????Success rate is 0 percent (0/5)
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