Cisco Firewall :: Debian Transparent Proxy With ASA 5520?
Apr 21, 2012
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?
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May 28, 2012
I would like to connect devices to my network so that their traffic passes through a proxy running on my computer. I figured the best way to do this is by setting the proxy on my router to the one I am running, but then I would need to have another connection to the computer running the proxy or else there would be an infinite loop ?? something like that. so:
Internet -> router (1) -> my proxy on comp A -> router (2) -> computer B
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Sep 4, 2012
I am working on a task of redirecting any unmatched http traffic to Symantec public transparent proxy through Cisco ASA. For the definition of uncatched http traffic, we have inbound squid servers for deploying IE proxy pac and redirect the http traffic to Symantec public transpraent proxy, however we can't deploy IE proxy pac to mobile device and non-support web browers.Since we have some application using IE proxy setting for direct http communication with external domains, the current symantec policy addes those domains in the exception list so that they are not redirect to Symantec public transparent proxy server.
-For the platform - Cisco ASA 5510 ASA 8.4(4)1
-For the solution, I have the following two nat rules
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May 5, 2013
I have an asa 5520. How would I configure my dedicated management interface to be able to route off subnet while the firewall is in transparent mode?
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Sep 19, 2012
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>
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Sep 20, 2012
I am new to cisco ASA. I need to configure ASA 5520 in transparent bridge mode. [code] I need to place the new asa firewall in transparent mode. How to configure the firewall in transparent bridgmode.
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Dec 3, 2012
I have a problem with my asa phone proxy. i have two ASA 5520 in HA. I have 10 phone register with ASA active primary. if i execute the command show phone-proxy secure-session. i can see the phone session on the ASA.
if i perform the same command on the passive ASA i can't see the session replicated from the active member.
If i switch the cluster the phone enter in a registrating loop and can't connect to the ASA now active.
If i switch back immediately (the session are still present on the first asa) the phone register again and all works
the ASA have version 8.4(5)
the phone are a 7921g
is normal that the skinny don't start again and re-register the phone on the ASA that became active after failover?
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Apr 18, 2011
I have ASA5520 with CSC bundle. How can i block Proxy Softwares like Ultrasurf.....?
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Nov 20, 2010
I´m trying to config a wccp web-proxy in a ISR 2811 at branch network. I have an Iron Port at Head-Quarter.
The idea is that the users at branch network, transparently forward http traffic to Iron Port at Central-Office and from them go to Internet.
The communication between sites is over DMVPN. I have two GRE tunnels running OSPF.
The Iron Port is configured as wccp v2 transparent redirection with forwarding method L2 or GRE an retunr method as L2 or GRE.
I receive packets on the branch router "Here I Am" but it get a message on debug:
Nov 21 19:26:07.067 GMT-2: WCCP-EVNT:D10: Here_I_Am packet from 172.16.10.10 w/bad fwd method L2, received indirectly via Tunnel1Nov 21 19:26:07.067 GMT-2: WCCP-EVNT:D10: Here_I_Am packet from 172.16.10.10 with incompatible capabilites
Nov 21 19:46:07.035 GMT-2: WCCP-PKT:D10: Sending I_See_You packet to 172.16.10.10 w/ rcv_id 0000004F
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Mar 24, 2011
Having some problems blocking users installing/using secure browsers proxy. Currently runing ASA 5520 ver. 8.3 & IPS SSM-20 7.0 (2) E4 & Websense web filtering. Able to block most proxy sites with Websense that use port 80 but recently found that some users using some products like Njutrino that use their own secure browser that use it's own proxy over SSL connection.
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Jul 2, 2012
We have ASA 5520 as SSL VPN concentrator so users can access internal web from outside. Our internal web also has several internet URL. What we want is when user click internet URL in our internal web, ASA forward those request to internal proxy server. I already config proxy using port 8080 and username "companyuser" and password, but always have authentication failed on ssl vpn browser. We uses forefront TMG as proxy. Username and password have right to access Internet.
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Dec 13, 2012
I have a VPN setup thru a Cisco 5520, Windows clients connect just find and the end users configure there browser to use our internal proxy servers. Users with the MAC OS X Anyconnect client can connect, they configure their Mac to use our proxy server, but the broswers will not work, clients can reach networks and resources behind the VPN gateway and have access to the Proxy(Tried a telnet to that hostname/port). I am running ASA 8.3(2), Anyconnect(OS X) 3.1.01065.
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Mar 17, 2011
I currently have 90 remote locations that have PIX501's. They are all running 6.3 on them. All of these locations are creating an IPSEC VPN to my ASA 5520 (8.4) at the data center. Web access at the remote locations is currently being handled with ACL thru split tunnels. This is getting increasingly not fun as I have to reach out and touch them one at a time whenever I have to allow more access to the net. Code...
I would like to keep my split tunnel (if possible) for ports 443 and 21. I allow access to "any" on those ports and have no plans to change it.
Can I send port 80 down the VPN tunnel to the Proxy/Web Filter and then return the results to the Remote Client.
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Apr 26, 2011
I do have the below setup,,
1. I have 6509 switch
2. I have 2 WLC configured in Active/Active mode connected in Trunk mode (L2 Port-Channel) connected with 6509 switch
3. On switch side i have configured the port as Trunk
4. L3 SVI for wireless users are created in 6509 switch (attached the diagram).
I would like to introduce a Cisco ASA 5520 firewall with AIp-SSM module so that all wirelees traffic can be inspected.
The issue is: Without changing any configuration in the network (switch & WLC) is it possible to introduce the firewall?
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Dec 3, 2012
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?
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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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Mar 14, 2011
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?
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May 14, 2012
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?
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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.
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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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Sep 10, 2012
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?
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Mar 31, 2013
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.
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Nov 25, 2012
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]....
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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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Apr 10, 2013
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]
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Dec 9, 2012
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.
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Jun 1, 2013
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]
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Oct 12, 2012
I am having issues configuring a vLAN network card on a Debian stable (Squeeze) client.The client is running in a ESXi version 4.1 environment.There are two vLANs: vLAN 8 and vLAN 14. The client is in vLAN 14. The domain controllers (as well as DNS and ISA servers) are in vLAN 8. Windows clients behave fine and they can connect to other vLANs just fine. However, I just can't get the Debian client to connect to any other vLAN than its own.I tried several methods, and non worked successfully thus far.One of the problems is that the client should only use one IP address. Using the vLAN package, its assumed that you have a different IP for each vLAN (I think), so that doesn't work out.There is one other Linux machine in the network. An Ubuntu client being in vLAN 8. That client works as it should and can ping to both local, and other vLANs.Until this problem is fixed, it is impossible to connect to the internet (because the ISA, DNS and DCs are in vLAN 8) so each time I want to install a package, I have to download either the .deb packages manually, or download source tarballs and then create an iso of those files, mount the iso and install the packages. You can imagine how much effort that costs.
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Dec 19, 2012
I need to know if the 5512X IPS will work if the ASA is in transparent mode and/or any limitations.
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Feb 20, 2013
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?
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Sep 15, 2012
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?
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Jul 15, 2011
I set up my new Linksys E3200 via hardwired Win XP box on small home network that uses a dsl line. I attached a Seagate Expansion 2TB usb hd to the router. All is well. After rebooting into Debian Linux via dual boot setup, I have a working internet connection but am unable to find the attached usb hard drive. What can I do to make it visible to this and other, linux systems?
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Feb 4, 2012
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.
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