Cisco Firewall :: ASA 5505 Connecting 2 Internal Networks?

Nov 7, 2012

We recently changed locations and acquired a new circuit from our provider. They also connected our remote branch office to our main office through MPLS. Now, as I understand it, the branch office basically connects back to the main office through our providers network (MPLS). We have a new router at the branch office which has a gateway of 192.168.1.225. The clients in that office have IP's of 192.168.1.96 - 100, using the gateway of 192.168.1.225.
 
The main office network is 192.168.0.0 (Gateway of 192.168.0.1)
 
At this end (Main office), I also have a new Cisco 2900 provided by the ISP, with port 0/0 for the outside connection (connected to the 0 port on my ASA 5505). The ASA's port 1 obviously running into my network hub. The provider tells me that port 0/1 on the 2900 is or should be used to connect the branch office back to here and has an IP of 192.168.0.225, as that's how the provider provisioned it. So, I plug that into the ASA's Ethernet port 0/2. And I'm assuming they have a route setup either on the 2900 or the router in the branch office so that 192.168.1.225 can reach me here at 192.168.0.0.
 
There is already a static route setup on the ASA: (192.168.1.0 255.255.255.255 192.168.0.225 1). As soon as I plug in the cable, the IP phones at the branch office work, but they can't access the internet or any resources in the main office. My questions are:
 
1. Shouldn't I be able to just go straight from the 0/1 port on the Cisco 2900 to my hub. At first I was plugging right into the ASA, but I don't think I need to do that, why go from the branch office through my ASA to access resources and then back out the ASA for internet. If they're already coming from 192.168.1.225, through the MPLS network, then they should go right to my network and then back out the ASA.
 
2. They have to route through the ASA first, in which case, do I need to setup another VLAN for that branch network in conjunction with a static route? I can ping the router and hosts in the branch office through the ASA only!
                 
Below is the running sanitized config:
 
Result of the command: "show running-config"
: Saved:ASA Version 8.2(2) !hostname ciscoasadomain-name audiology.orgenable password ulzaQiFnKVzDwUmW encryptedpasswd 2KFQnbNIdI.2KYOU encryptednames!interface Vlan1nameif insidesecurity-level 100ip address 192.168.0.1 255.255.255.0 ospf cost 10!interface Vlan2nameif outsidesecurity-level 0ip address 1.2.3.4 255.255.255.240 ospf cost 10!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!boot system disk0:/asa822-k8.binftp mode passiveclock timezone EST -5clock summer-time EDT recurringdns server-group DefaultDNSdomain-name audiology.orgsame-security-traffic permit inter-interfacesame-security-traffic permit intra-interfaceaccess-list

[code]....

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Cisco Firewall :: ASA 5505 Routing Between Internal Networks

Feb 18, 2013

I am new to Cisco ASA and have been configuring my new firewall but one thing have been bothering. I cannot get internal networks and routing between them to work as I would like to. Goal is to set four networks and control access with ACL:s between those.
 
1. Outside
2. DMZ
3. ServerNet1
4. Inside
 
ASA version is 9.1 and i have been reading on two different ways on handling IP routing with this. NAT Exempt and not configuring NAT at all and letting normal IP routing to handle internal networks. No matter how I configure, with or without NAT I cannot get access from inside network to DMZ or from ServerNet1 to DMZ. Strange thing is that I can access services from DMZ to Inside and ServerNet1 if access list allows it. For instance DNS server is on Inside network and DMZ works great using it. [code]

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Cisco Firewall :: ASA 5505 Allowing Traffic Between Two Internal Networks

Aug 30, 2011

I'm usually not working with this product, but this is what I'm trying to do.I have 2 internal networks setup on our Cisco ASA 5505 firewall. (not done by me, I'm a new to this product)I'm trying to access a server on one network from a PC located on the other internal network. (preferable through the web gui)When I try "Packet Tracer" from interface "Trust4" it fails on the NAT phase.(Source ip: 10.0.4.99, Destination ip: 10.0.6.99)
When I check the NAT rule, it says:
Type            Source     Interface    AddressDynamic         any          outside      outside.

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Cisco VPN :: ASA 5505 - Remote Access To Different Internal Networks

Jan 17, 2013

A customer has a ASA 5505 with a remote access vpn. They are moving their internal network to a new scheme and would like users who come in on the vpn to access both the exisiting and new networks. Currently the can only access the exisiting. WHen users connect to the remote access vpn, the asa gives them an address of 192.168.199.x. The current internal network is 200.190.1.x and they would like to reach their new network of 10.120.110.x.
 
Below is the config:
 
:
ASA Version 8.2(5)
!
hostname ciscoasa

[Code].....

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Cisco Firewall :: ASA5510 - Connect 2 Internal Networks

Apr 26, 2011

We recently got a Cisco ASA 5510 Security Appliance and I have some general question.

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Cisco Firewall :: ASA 5510 / Unable To Get Internal Networks Talking To Each Other

Apr 22, 2012

I am tasked with transferring all clients from one subnet to the other. I figure the nicest way to do this is to temporarily have the subnets talk to each other in an endeavour to avoid as much downtime as possible. The two internal subnets are:

192.168.0.0/24
192.168.43.0/24 (the intended migration network)
 
I am beating my head against the desk here as I dont seem to be getting anywhere after the changes I have made. The current configuration is as such:
 
ASA Version 8.2(5)
!
hostname ciscoasa
domain-name *****
enable password ***** encrypted
passwd ***** encrypted
names

[code]......
 
Upgrading the firmware is not really an option?

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Cisco Firewall :: ASA 5505 How To Map SSH From Outside Network Range To Internal

Feb 21, 2013

I have a Cisco ASA 5505 (version above) and I have someone that needs to SSH into a box behind the ASA. I'm having a few issues trying to configure this access-list and NAT. I've tried many combinations and clearly my IOS is not as good as I thought. What commands should I enter to accomplish mapping SSH from an outside network range to an internal host ?

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Cisco Firewall :: Isolate Internal Net On Port 4 Asa 5505?

Nov 20, 2011

I want to have my port 4 on the asa 5505 only allow access to the internet and not the internal network, what do i need to do?

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Cisco Firewall :: ASA 5505 Configuration Cannot Get To Internal Network

Jan 25, 2012

I now need to configure an ASA 5505 for a small server farm.  It's fairly straightforward:isp -> asa5505 -> internal servers,'m using static addresses -- no DHCP involved.VPN works;  I can get into the internal network.pinging from the ASA to an external address works,However, I cannot get from a laptop connected to an internal port out to the internet, either using ping or typing an address in the browser.

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Cisco Firewall :: Can't Access Internal Servers From Behind ASA 5505

Apr 3, 2013

I am having some trouble accessing some backup Email (Outlook Web Access) and Citrix servers located behind an ASA 5505 firewall at a remote datacentre. Simply put, when I go to the specific URL (e.g. [URL]) I do not arrive at the splash page, I just get a message saying that the server took too long to respond in the web browser. I'm wondering whether I have missed something on the configuration or the firewall itself is not letting my requests through. The remote servers are located at a remote Disaster Recovery site and use the subnet 192.168.4.0/24. I am at head office which is connected to the DR site via a VPN using 192.168.1.0/24.

[Code] .....

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Cisco Firewall :: Internal DNS Server Entry ASA-5505

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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Cisco Firewall :: ASA 5510 - Connecting To External IP Of Internal Server

Sep 25, 2012

I was just wondering if it's possible with an ASA 5510 to connect to the external IP address of an internal server from inside the network.  I have already set up dns doctoring for dns lookups, and everything is working fine there.  We have an application inside the network that tries to connect straight to the external Ip of another internal server.  where to look in the ASDM 6.4?

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Cisco Firewall :: ASA 5505 8.4(2) Allow User To Access Internal Www Server?

Aug 2, 2011

I tried the solution posted at [URL] however it did not work on my ASA5505 8.4(2). I thought that it may be because I only have a single public address so the web server is responding to port forwarding through the one public IP already. looking in ASDM it appears to indicate that a configured access list is blocking the server from responding to the internal hosts.
 
object network Private_IP
host 192.168.1.15
object network Public_IP
host 1.1.1.1
object-group network internal_net

[code]....
 
Can I fix an access list (or something) to make this work or am I wishing for too much with only one public IP? This worked by default on my Netgear firewall.

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Cisco Firewall :: Accessing Internal Sites Via External IP 5505

Jun 4, 2012

I have a Cisco 5505, 2 sites that are internal, 1 external IP (dhcp from cable modem).   While on my laptop, ipad, iphone, I cannot access the server via it's external IP address.  I MUST use the internal IP in order to access this site. I have heard of hairpinning, internal dns server(don't really want this).

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Cisco Firewall :: ASA 5505 Internal Address To Forward From External One

May 30, 2013

I have an old ASA 5505, and I'm having some trouble with Nat Hairpinning. I've done this with other firewalls before and I am having no luck now. I have an internal address that I wish to forward from an external address- so if someone goes to 123.456.789.012:3456 then it will forward to 192.168.1.244:92 (All numbers are arbitrary here- only for illustration). I have and Access Rule and NAT and PAT set up so that I can get in if I originate from outside the LAN. What I am trying to do is to have this work from inside the LAN as well- so that if I am at my desk, and I connect a device and type in 123.456.789.012:3456, it will deliver the content at 192.168.1.244:92. The problem I am having is that it just isn't working, and I cannot figure out why- When I started here, there was an address configured to work this way, and it still works- I just cannot find what is different between what I am doing and what the person who configured it did.

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Cisco Firewall :: ASA 5505 Cannot Ping Secondary Internal Network?

Jan 15, 2012

Cisco ASA 5505 Cannot Ping Secondary Internal Network.

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Cisco Firewall :: ASA 5505 Intermittent Denies From Internal Workstations

Mar 24, 2013

I'm completely illiterate with Cisco appliances but I'm taking care of an ASA 5505 that is configured as a firewall and it has been working for the last years. All of the sudden we are experiencing intermittent connection problems from the workstations. You can be browsing the internet and suddently you'll get a server not found error but you refresh it and it works. This is also intermittent, out no apparent reason it will start working normally again.
 
I am seeing a bunch of errors like this in the logs:
 
4          Mar 25 2013          14:34:49          106023          66.235.119.5          69.70.15.61           Deny icmp src outside:66.235.119.5 dst inside:69.70.15.61 (type 8, code 0) by access-group "inbound" [0x0, 0x0]

[Code].....

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Cisco Firewall :: ASA 5505 - Nat Internal Network Before Sending Over Tunnel

Oct 27, 2011

For a customer I have configured a new ASA 5505 firewall with 8.42 software. I had to build 3 ipsec tunnels to different locations and firewalls. All tunnels are working except one. I have to translate the inside network 1 to 1 to a different private range before it is sent over the tunnel. Each host from network 192.168.133.0 /24 has to be translated to a  192.168.112.0 /24 host and then sent over the tunnel. (e.g. 192.168.133.22 translated to 192.168.112.22)

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Cisco Firewall :: 5505 ASDM Location Is Using Same IP As Internal Server

Oct 27, 2011

I have a server that I need to open up some ports on to allow access to the new internal Sharepoint server we're setting up. I've been having some issues getting the ports open like once I put the commands in and save them that server suddenly stops allowing outbound traffic. After looking at a few things I noticed while I was looking at the config file that the ASDM location is showing 2 IP's, both are the same as the server I'm trying to open ports for one being the private IP and the other is the public IP I'm trying to use. Is this the reason I'm having problems when I try to open those ports to my server? Do I need to use both a different private and public IP for this server so I can get my ports to work? The programmers selected these IP's so if I need to change them I'll let them know in case they need to make changes for the Sharepoint setup. This is on an ASA 5505.

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Cisco Firewall :: ASA 5505 With Dual ISP And 2 Networks

May 7, 2013

I would like to configure a Cisco ASA 5505 with Dual ISP (ISP 1 and  ISP2) and two networks (network 1 and network 2). My customer need that  clients in the network 1 connect to Internet with ISP1 and clients in  the network 2 connect with ISP2. If a failure occurs in ISP1 (just an  example) the network 1 clients connect with ISP2.

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Cisco Firewall :: Keep 2 Networks Separate On ASA 5505

May 7, 2012

1. I currently have a Comcast Business Class Gateway, Cisco 2100 Series WLAN Controller and a Cisco ASA 5505 all connected together to supply LAN and WLAN internet connections on my network.
 
2.  I also have a Card Access Security System on it owns network.  It currently does not have internet access.
 
I would like to put my security system on the internet so that I can support it remotely.  To do this, it has to be on a firewalled internet connection.Can  I put the two networks on my ASA 5505 and keep them seperate?  I don't want to provide a path into the Security System through my current LAN & WLAN.  But I do need a frewalled internet connection on my Security System.  I am trying to avoid purchasing a seperate firewall.

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Cisco Firewall :: 5505 PAT Between 2 Networks On Same Interface

Nov 6, 2011

I'm using asa 5505 with 8.4(2) and have the following problem.I have 2 Networks. each Network has it's own externel Internet-Ip and also Mail-Server.
[code]

Now I want a communication between the two Mailservers with their external Ip-Address.I did a static NAT from ipnt any to int any or also from int routed to int routed, but nothing worked.Packet tracer showed at NAT-Lookup where the externel adress of the second Mailserver is passed: Info Static translate Network1 to Network1
 
But it should show a translation from network1 to network1-external.Due to Security reasons, I cannot paste the whole config.Under 8.0 I did the same configuration with Policy-Nat and it worked.

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Cisco Firewall :: Multiple WAN IPs Routed To Separate Internal VLANs On ASA 5505

May 25, 2011

I have an ASA 5505 with the security plus software and I'm trying to find out how to assign 2 public IPs to the outside interface and have each IP routed to a separate internal VLAN. For example, IP 1 = X.X.X.1 routed to 192.168.1.0 and IP 2 X.X.X.2 routed to 192.168.2.0. I was told this was possible and I've been trying to find configuration examples, but I can't seem to get anywhere and now I'm getting desperate because I'm scheduled to install it this weekend.

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Cisco Firewall :: 5505 Configure Internal Router And DNS Server - No Internet

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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Cisco Firewall :: ASA 5505 / Allow External Traffic To Access Internal Computers

Mar 22, 2012

We have an ASA 5505 running version 8.4. We are having problems allowing external traffic to access computers behind the firewall. Our current config is:
 
ASA Version 8.4(3)!hostname ciscoasadomain-name default.domain.invalidnames!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!interface Vlan1nameif insidesecurity-level 100ip address 10.2.1.1 255.255.255.0!interface Vlan2nameif outsidesecurity-level 0ip address 152.18.75.132 255.255.255.240!boot system disk0:/asa843-k8.binftp mode passivedns server-group DefaultDNSdomain-name default.domain.invalidobject network a-152.18.75.133host 152.18.75.133object network a-10.2.1.2host 10.2.1.2object-group network ext-serversnetwork-object host 142.21.53.249network-object host 142.21.53.251network-object host 142.21.53.195object-group network ecomm_serversnetwork-object

[code]....

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Cisco Firewall :: ASA 5505 - Connect Single Internal Network To Internet?

Aug 23, 2012

I have configured an ASA 5505 to connect a single internal network to internet, it is not working. I have attached the config

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Cisco Firewall :: ASA 5505 / Vendor Is Not Able To Access Devices On Internal Network

Sep 10, 2012

I have a 5505 between a vendor router & my company network, vendor is not able to access devices on internal network. I am also not able to access the firewall via asdm

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Cisco Firewall :: ASA 5505 - Discarded Incoming Packets On Internal-Data0/1

Apr 4, 2013

How to best troubleshoot some errors I'm seeing on the internal interfaces of my ASA 5505. This is similar to the question at [URL], but the details are different enough that I felt it justified a new discussion.
 
I have an ASA 5505, running version 8.2(2), 256MB RAM. From time to time (on the order of once a week) our monitoring alerts us that both Internal-Data0/0 and Internal-Data0/1 are experiencing an unusual amount of inbound packets which were discarded with errors, up to 2.3 per second as of this post. Here is what I hope relevant output from my device:
 
asa# show interface ip brief
Interface                  IP-Address      OK? Method Status                Protocol
Internal-Data0/0           unassigned      YES unset  up                    up
Internal-Data0/1           unassigned      YES unset  up                    up
Vlan1                      10.x.x.x     YES CONFIG up                    up
Vlan2                      32.32.32.32    YES CONFIG up                    up

[code]....

1. My understanding is that Internal-Data0/0 is an internal bus that connects to modules like the 4GE. I don't have any modules installed at all, as you can tell. Therefore, what is this bus doing?
 
2. For that matter, what is Internal-Data0/1 doing? What does it connect to?
 
3. I'm guessing that due to the input errors and overruns reported for both of these interfaces, it's a buffering issue. Since these are input errors, does this mean that traffic destined to this bus for forwarding is being dropped because the bus itself is running out of buffer memory? How would I see (and subsequently monitor) the buffer memory for these interfaces? Once I am able to see it, what sort of tools can I use to determine what is causing this?

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Cisco Firewall :: ASA 5505 - Allowing Multiple Networks On DMZ?

May 22, 2011

I have 3 networks coming on DMZ (VPN) interface. Only one network is able to ping the DMZ interface. See below networks coming i on the DMZ.
 
10.132.24.0/2410.132.25.0/2410.132.26.0/24 Only the 10.132.26.0/24 netork works as it is in the same range as the DMZ interface.
 
allowing the other two networks to communicate. I've attched the diagram and configs for your perusal.

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Cisco Firewall :: ASA 5505 - Setting Up 2 LAN Networks And 2 WAN Connections?

May 16, 2013

I have an ASA 5505 with Security Bundle license.
 
I am able to create 2 LAN networks (192.168.9.0 and 172.16.9.0) Vlan1 and Vlan12 respectively. I also setup 2 outside interfaces (outside1 and outside2).
 
Network 1 (192.168.9.0 - VLAN1) has no issues going out via Outside1, however I can't get Network 2 (172.16.9.0 - VLAN 12) to go thru outside2.
 
I put in a static route (route outside 172.16.9.0 255.255.255.0 x.x.x.x), the x.x.x.x is the default gateway of my ISP.                  

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Cisco Firewall :: ASA 5505 - HTTPS Traffic Through DMZ Interface To Internal Exchange Server?

Apr 23, 2012

I have an ASA 5505 with the base license,When I setup the DMZ interface I had to add the deny access to the inside VLAN.  The DMZ works fine with WiFi on it, but user's iPhones can't get email unless they turn WiFi off.Is there a simple way to allow HTTPS traffic through the DMZ interface to our internal Exchange server which is NAT'd on the 5505's external IP?

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Cisco Firewall :: ASA 5505 / Block Internal LAN And Internet Traffic Except LogMeIn Site?

Sep 12, 2011

I have configure Cisco 5505 as layer 2 firewall mode. I have vendor machine connected  to Cisco ASA 5505 on port 2 as VLAN2 inside then VLAN1 outside connected to my internal network on layer 2 cisco 2960 switch. This machine needs access only to LOGMEIN then block all internal/internet traffic. 
 
vendor machine on vlan 2 inside >> Cisco ASA 5505 vlan1 outside  >> layer2 switch >> internal LAN >> Cisco 5520 main FW >>> INTERNET

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Cisco Firewall :: 5505 - ASA Install Inside Networks Can't Browse Each Other

May 19, 2011

I just installed a new ASA 5505 for an office with three internal subnets.  The three networks can each get online fine and ping eachother, but cannot browse to shares on the two internal networks other than their own.  How do I configure the ASA to allow all traffic between these three inside networks?
 
192.168.152.0
192.168.152.0
192.168.154.0
 
[code]....

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