Cisco Firewall :: 6509 - Is It Better To Setup Firewall As Transparent Or Routed
May 9, 2011
I am familiar with the PIX and ASA's. We have two Cisco 6509's with a FWSM installed in both. Our network is shown in the diagram. We use Blue Coat Packetshapers and Barracuda Proxy appliances. I plan on setting up HSRP on both 6509's for traffic coming from our ISP Cisco 2811's as well as use HSRP for our DMZ and internal network. I would like to setup the firewalls for statefull failover. We will be using PAT for our internal users and one-to-one static NAT for our DMZ.
Is it better to setup the firewall's as transparent or routed?
Since the firewall is built into the switch, how do I insert the Barracuda proxies? I can configure them as transparent or routed proxies.
have a Cisco ASA that I am trying to configure in a unique way, I want it to perform a variety of tasks;
VPN SSL VPN Tunnels Firewall Inside to Outside via versa
But the difficult task, is creating a DMZ with devices that are assigned fully routed IP addresses from our ISP directly, these are H323 and SIP devices that cannot use NAT, and must have a fully routed IP address assigned to them.
Obviously the problem I have with the Firewall in its default routed mode, is that it wont allow me to overlap IP addresses on the outside interface with the DMZ interface.
Could the Firewall be configured for Transparent mode between Outside and DMZ, but Routed mode between Outside and Inside?
Is it possible to have context in transperant mode and routed mode. Means if i need three context then 2 of them is in routed mode and one of them is in transperant mode. If yes then how, i can 't find this info in cisco website.?I am havin 5585-x and asa version 8.4?
We are currently looking at design models for a Multi-Tenancy solution.The firewall layer will be 2 X ASA's running 9.X to take advantage of VPN's in multiple context mode and mixed L3 and L2 contexts.
We will be delivering services through multiple L3 contexts (between 2 and 5 L3 contexts for services) and 1 transparent context for customers infrastructure who will then have virtual firewalls for NAT's and VPN's etc withing their own environment.
I am not very experienced with IPS so my query is; if we were to get an IPS license for both ASA's how would the IPS fit in, can we use it to inspect traffic for all the L3 contexts and the transparent context?
i need to configure a ASA 5505 in transparent mode.learned from Internet, my configuration is :
int e0/0 --- vlan 1---->nameif outside int e0/4 --- vlan 2------> nameif inside gloable ip is 172.17.104.10 255.255.255.0 http server enable http 172.17.104.0 255.255.255.0 inside
when i connect the outside interface to one PC with ip addr 172.17.104.194 my PC connect to inside interface with ip 172.17.104.249 cannot ping each other even when i set rules as permit any any on both direction
I would like to configure an ASA5512-X in firewall transparent mode, but I am having trouble getting ASDM to lauch when I do.
I have created a BVI interface with an IP address, and I hve enabled the mangement interface, but ASDM does not lauch when I enter the IP adress of the BVI I created.
Apprently you need to use the bridge-group command to assign an interfce to a bridge group. When I enter this command at the (config-if) prompt for Management 0/0, this command is not recognized.
What are the general steps for configuring the management interface to be able to launch ASDM in transparent mode?
I am configuring an ASA5540 firewall for a client, only difference to usual being that it is to run in Transparent mode. I have looked through for an EAL4 transparent firewall config guide but found nothing and therefore assumed that the usual one would be used.The clients security bod has now come back and insisted MAC filtering should be used but I can find no reference of this anywhere. Does MAC filtering is required to make a transparent box EAL4 compliant and if so where I can find documentation supporting this?
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?
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.
i have a ASA5510 in the office, that already configured 3 context, namely, admin, user, server.in the server context, the last running config was not saved, and there was a power trip last friday night. 1 of the sub interface was affected, and i need to recreate that interface.I am getting the below error, it only allow me to do changes those pre-defined interface.how to I create extra sub interface?
I have one firewall need to be configured in transparent mode. I have inside and outside router. What is the configuration of transparent firewall ASA8.2. I didn't find the configuration on Cisco site.
I am trying to set the PIX firewall to transparent mode.After I set it to transparent firewall, I allowed all icmp, tcp, udp traffics.Currently, any devices in the inside network can get the ip automatically from DHCP server in the outside network but cannot ping to any servers in the outside network either access the internet.Do I need additional confiration on the firewall?
Here's the configuration:
PIX Version 7.0(1) firewall transparent names ! interface Ethernet0 [Code]....
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.
We've in our company a Cisco Asa 5510 v8.4(3), Asdm 6.4(7) and a SSM-CSC-10-K9. The firewall is in transparent mode. I get an exchange 2003 SP2 server behind. When users trying to send mailing lists with many recipients (above 300), the Exchange server didn't send these mails. I'm pretty sure that this problem come from the ASA Firewall, because when I plug my server directly on my Internet Connection, the mailing list is sent. I've search on the web, and disable "ESMTP Inspection", but it didn't work. [code]
I would like to setup multiple DMZs for our hosting servers. Currently there is a single DMZ in which our reverse proxy servers are connected using a public IP address. The idea is to have the reverse proxy forward the request from the Internet to the hosting servers in another DMZ. The purpose of the hosting DMZ is to protect it from the outside as well as from the inside. There will also be a development DMZ where we can test content prior to going live with the website.
Network: We currently have two Cisco 6509's (Core) with a FWSM in each running active/stanby configuration. There is a 10Gb Fiber connection between each Cisco switch to two Cisco 4948s (Top of Rack Switches). I can either setup OSPF or Trunking between the core and top of rack switches. The Cisco 4948s will support VLAN 7 (hosting DMZ 10.0.7.0/24) and VLAN 8 (development DMZ 10.0.8.0/24). Each webserver is connected to both Cisco 4948 for redundancy.
Question: If I have a single interface connecting both VLANs 7 and 8, either through Layer 2 or 3, then how can pass both DMZ traffic to the appropriate servers? The reason why the servers are in the same rack connected to the same two switches is that we are using Blade Servers and VMWare.
I have a question regarding transparent firewalls using BVIs.Based from the diagram above, ASA1 is in Transparent mode.Port Gi0 is assigned BVI-1 and port Gi1 is assigned BVI-2. Is it possible for network 1 to communicate with network 2 ?The traffic will be passing through Firewall towards the router, The router will do the routing and then forward it back to the firewall then towards network 2?I am thinking of making port Gi2 of the firewall a trunk and use subinterfaces in order to forward BVI headers to the router.
ASA 505 is connected to layer 3 switch.ASA is in transparent mode.Layer 3 switch has SVI Vlan 20 and also it has dhcp server for vlan 20.PC connected to transparent switch is not able to get the IP address from layer switch.I have config the ACL on outside interface of ASA to allow the DHCP reply coming from Switch.When i assign static IP to PC connected to port eth0/1 of ASA it works fine. [code]
All three of these options associate the same set of vlans to the FWSM but using different groupings. As far as I can tell, these groupings have no functional significance either on the switch side or the FWSM side. These are simply three different ways of specifying exactly the same thing? Am I correct?
I am not receiving icmp replays from the fswm interfaces if i try to ping 172.20.80.1 from 10.50.50.2.I do not see any debuging info in the logsI successfully ping 10.50.50.2 from the inside networks int the cat6500, but int the network 172.20.80.0, can not ping 10.50.50.2.
Is it possible for an 5505 ASA to be in transparent mode such as ethernet0/0 outside, ethernet 0/1 inside, and use ethernet 0/2 for syslog only on a seperate network other than the one that 0/0 and 0/1 is using. The tranparent part being on a 192.168.168.X/24 and the syslog server being on say a 10.2.1.X/24 network?
I just have 1 question. I am going to be getting U Verse installed at my house and have been having a hard time finding this in the documentation. The modem I am going to be getting is the 3800HGV-B. Over on the ATT forum users are stating that the modem needs every MAC of every potential IP. I thought about using it's DMZ Plus mode but I am getting a block of 8 IP's and it doesn't seem to play nice unless it see's 5 different MAC's. Right now I have my 5505 in routed mode so I don't believe it passes the MAC of the client's through. Will the ASA pass the MAC of the client's through to the modem with the appropriate ACL's applied?
Recently i have configured ASA5550 with 2 Contexts in Transparent mode. Traffic can pass through a single Firewall context but through both contexts it couldn't.
Recently, I unable to configure the failover on bridge group in transparent mode . I have five interfaces .out of this only 3 is showing in the show run config . Whether I can config failover on on of the data interfaces.
I have the ASA 5520 with the version ASA Version 7.2(4) <context>
I've setup my Cisco ASA 5505 in transparent mode. I have a Cisco 1841 connecting to the ISP (DHCP client) and F0/0 for inside. The 1841 is the DHCP server. I have my ASA 5505 behind the 1841 in transparent mode (Vlan 1 for Outside and Vlan 1 for inside). The router config is good as when you connect a computer straight to the inside interface I get DHCP and can go to internet, no problems what so ever. But When you're trying to go through ASA isn't not working. if I add a ip any any statement to the access list it will work but having an "ip any any" in a access list is like having no firewall at all.
ciscoasa(config)# sh run : Saved : ASA Version 8.2(4) ! firewall transparent hostname ciscoasa enable password zmQ6OnxvsOOEDNAy encrypted
recently i have install asa 5520 (8.2) in my networks.Earlier I was using my transparent proxy with 2821 by the following configuration access-list 120 deny ip host 192.168.112.12 anyaccess-list 120 permit tcp any any eq wwwaccess-list 120 deny ip any any route-map PROXY-REDIRECT permit 10match ip address 120set ip next-hop 192.168.112.12 ip policy route-map PROXY-REDIRECT and was working fine. How i can use my transparent proxy with ASA?
I have a problem whit the configuration of a Firewall ASA 5585 whit the BVI Interface and transparent Firewall, I have 2 VLAN that i want to interconnect.
The problem is whit the configuration of VLAN. The traffic does not cross the FW.
I have a cisco ASA5505 configured in transparent mode. This evening we attempted to plug a couple of new servers in but they simply didnt work, despite our test server working absolutely fine. The server IP's are all in a network object group (the same as the test server) and they're all using the same ACLs etc. I'm relatively new to configuring cisco equipment.
the only thing I can think of is a static route I had to add to get the managemet IP to work might be causing problems.route outside 0.0.0.0 0.0.0.0 XX.XXX.132.1 1(IP addresses obfuscated- servers are all in the same range so assume XX.XXX is the same across all IP's).
I understand that in transparent mode an ASA5510 would only be able to have two interfaces, inside and outside. My question is could one of those logical interfaces be an LACP'd interface, made up of two physical interfaces. Topology below. I understand that the router and ASA5510 are SPOF here, so it is a bit of a moot point, but we're connecting already existing infrastructures together!
I have a ASA 5510 that is connected to my ISP and the inside interface that is connected to my router. I have a /30 and need to determine if the configuration of x.x.x.121/30 which is my ISP and also the BVI address on the ASA. The inside router address is x.x.x.122/30 same subnet as my ISP will allow me to pass traffic. Management interface works using a different ip address but not able to get the traffic to pass traffic out to the internet thru the ASA
ISP-------->ASA-------->Router
Bottom Line is that I only have one usable address that is being used by the router and the ISP and ASA are using the other. Will this work?
