Cisco Firewall :: WCCP Redirection On ASA 5540?
Apr 3, 2013
I have the following topology, WCCP is configurated on ASA, inside interface, lan users and websense machine are located on the same VLAN of my catalyst 3750G?I want to filter traffic on port 80 (www) to the users on the LAN side debug on the ASA show me that comunication between that device and Websense is OK, there is Here_I_Am and I_See_You packets
WCCP-PKT:D00: Sending I_See_You packet to WEBSENSE_PROXY w/ rcv_id 0000015B
WCCP-PKT:D00: Received valid Here_I_Am packet from WEBSENSE_PROXY w/rcv_id 0000015B
WCCP-PKT:D00: Sending I_See_You packet to WEBSENSE_PROXY w/ rcv_id 0000015C
WCCP-PKT:D00: Received valid Here_I_Am packet from WEBSENSE_PROXY w/rcv_id 0000015C
WCCP-PKT:D00: Sending I_See_You packet to WEBSENSE_PROXY w/ rcv_id 0000015D
From show WCCP i saw that WCCP engine and ASA were detected
FW# sh wccp
Global WCCP information:
Router information:
Router Identifier: 200.X.X.X
Protocol Version: 2.0
[code]....
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Jul 17, 2011
I currently have WCCP redirection setup on my ASA 5520 to redirect to an ironport on ip address 10.11.1.10. The ASA inside ip is 10.11.1.1 and the ironport is setup for transparent redirection to that IP. This all works well and the Service Identifier i'm using for WCCP is 95.I am now creating another WCCP group because on my ironport I have 4 interfaces so I wanted to use them for our admin network. So I created an ACL on the ASA for our admin traffic and I want to redirect that using Service Identifier 94 to the ip on the ironport of 10.11.1.22. But I can't get traffic to redirect.
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Dec 9, 2012
I have a ASA5585 running 8.4 that is redirecting Internet http to a websense server via GRE.The integration is working fine, except when a user PC sends a large packet (~1500 bytes).With WCCP/GRE headers, the user packet is too large to be transmitted to websense, so the ASA fragments the packet in two and transmits both to websense.
A sniffer trace confirms that both fragments reach the websense server, but the TCP packet is never acknowledged.User-side TCP retransmits the large packet three times over 15 seconds, and eventually retransmits fine with smaller packets. The 15 second delay is of course not acceptable.Users and Websense server are both on the Inside interface.
We are considering imposing browser proxy to websense (which works fine), but would prefer not, considering the increasing diversity of devices.
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Apr 11, 2012
I have a 5520 ASA using wccp redirection to our IronPorts on the inside and everything works great for inside users. What I'm trying to do is get VPN users off split tunneling and to filter their traffic through the IronPorts as well but I can't figure out how. When they connect they seem to bypass the Ironport completely.
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Nov 9, 2011
if a Cisco router or switch can handle wccp redirection enabled for both waas and some other web content filtering appliance using a different service group?
seems like the priority value would come into play determining which service group gets handled first?
we currently do WCCP for WaaS on our 3945s.
I am going to advocate to my customer that we separate this out for CPU load issues, config complexity issues, IOS issues, etc... but the question is going to come up - "can we do WCCP for different applications on our Catalyst 3750 core switch, or our 3945 WAN routers?"
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Jul 18, 2012
I have a Cisco 7206VXR running 12.4(24)T3 IOS. It is configured with WCCPv2 using L2 mask redirection. I am using service groups and associated extended ACLs to select which subnets I want to redirect port 80 traffic from.
It is working fine for the subnet 192.168.1.0/24....
int gi0/2
ip wccp 10 redirect in
ip address 192.168.1.99 255.255.255.0
... however, there is OSPF running between the router and a Mikrotik device directly connected to this interface. The gateway addresses for all the client subnets are on the Mikrotik. Traffic from other subnets, e.g. 192.168.2.0/24, 192.168.3.0/24 come in on this interface and I want to redirect those too. But it appears that the redirection doesn't work for those subnets (I don't see any hits on the relevant ACL for any subnet except 192.168.1.0/24).
It seems like the router only wants to redirect traffic for subnets that it has an IP address in itself. Admittedly, all of the example configs i've found on cisco.com are for redirecting traffic from directly connected subnets but I can't find anything that denies thie possibility of redirecting any traffic that comes in on a given interface.
The question is, is this how WCCPv2 redirection works? i.e., the router must have an IP address in the subnet to be redirected?
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Jul 14, 2011
I am using cisco 5520 for my RAS & site - site VPN's. backbone 6509 --> CISCO 5520--> ISP router with 3 ethenet interfaces.From cisco 5520 there r 2 connections to router, one for sit-site vpn outside interface and the other for RAS outside. I want to configure url redirection on 5520 so that when someone from outside access public IP it should forward it to the server in LAN. I want to use the interface hosting RAS for this.
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Nov 30, 2011
I'm trying to use port redirection to allow outside access to a internal web server. As far as I can see, everything is configured properly. The Open Port Checker tool from yougotsingle.com says that the port (80) is open. However when I goto access it the connection times out. The external address is static from my ISP, and I will call it xxx.xxx.xxx.xxx. The server is at 10.1.1.20, and is functioning properly over the LAN.
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Oct 10, 2011
I would like to do something verys imple with IPTABLES but i canno't find any "simple" way to achieve...iptables -t nat -A PREROUTING -i eth0 -s 10.0.0.0/24 -p tcp --dport 80 -j DNAT --to squid-box:3128.The idea is to redirect any connection to any host which try to connect to port tcp 80 being redirected to a server called squid-box on port 3128.I have seen that for proxy squid implementation with ASA i had to use wccp but for my personnal understanding.
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Apr 3, 2012
I'm new at the ASA5500 domain. I have a question: How can I redirect traffic coming on a port to a machine inside the LAN listening to another port ? I would like to use ASDM.
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May 16, 2013
We have a singe IP Address in the Internet and want to forward SMTP traffic that hits our ASA Outside Interace to the internal Mailserver.And we like to forward Http Traffic to our Webserver.
Example.
212.23.23.23 Port 25 -> 192.168.1.100 Port 25
212.23.23.23 Port 80 -> 192 168.1.200 Port 80
How do i acomplish that. Which NAT rules do in need?
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May 26, 2012
We have 2 TS (Terminal Servers) and have configured the 1st RDP using my public address (say 8.8.8.8) on port 3389. it is working very well of course. However I need setup my 2nd TS but will use port 7777 on the same public address which is not working.I am using ASDM 6.3 and firmware 8.3.1.Is this a limitation for this IOS?
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Feb 27, 2013
Web auth redirect URL gets dropped if stateful firewall is between webauth host and switch management interface. Aaron at Cisco live london kinda hinted about maybe Cisco working on this ? We can't disable stateful inspection. Is there any other solutions or workarounds ?
"Although this approach introduces additional hops in the return path from the switch to the host, it produces negligible load on the default router and intervening infrastructure since only the WebAuth traffic from the switch to the host follows this path. In campus designs that do not use SVIs on the data VLAN,6 a default route is typically already configured. In this case, no additional configuration is required to support WebAuth.
However, problems may arise in the case in which traffic to the default router is bridged through a stateful firewall. The original SYN packet in the TCP handshake is consumed by the access switch, so the first packet that the firewall sees is the SYN-ACK packet from the access switch. Stateful firewalls typically drop SYN-ACK packets if they have not seen the original SYN packet.In this case, you will need to turn off stateful inspection for ports 80 and 443 on the firewall."
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Oct 31, 2012
I am currently trying to enable WCCP between a Cisco ASA 5512 firewall and Barraccuda Webfilter 410 Vx applicance. The ASA firewall is running IOS version 8.6(1)2 and the Barracuda is funning firemware 6.0.0.013. Both the ASA and Barracuda are in the same network and can ping eachother. The ASA has several interfaces, outside, inside, data and dmz. The PCs and barracuda appliance are behind the data interface. ASA data IP 172.16.18.1 Barracuda IP 172.16.18.40 All PCs in the 172.16.18.0/24 subnet use the ASA as the default gateway and should have web requests redirected to the Barracuda.
Below are the respecive bits of my ASA config
interface GigabitEthernet0/0
description Management
speed 1000
[Code].....
I suspect my issue is that the ASA is generating a Router Identifier of 172.21.20.1 which is my inside network and the barracuda cannot communicate with it. how I can get this working ?
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Mar 10, 2011
What the support for WCCP on a FWSM running 4.0(7) is like, if there is any at all ?
I've read that the earliest PIX release that supports WCCP was 7.2(1) but I'm not sure how FWSM 4.0(7) aligns with the PIX versions.The only doc's i can find refrencing WCCP on a 6500 with FWSM is in the 6500 12.2 IOS guide.
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Feb 22, 2012
I have a IOS firewall on a 2921 router, zone-based config. The remote and main sites have Cisco WAAS , running 4.4.1 software. I am using WCCP redirection on the WAAS/router combination. If I leave it off the firewall passes SSH correctly to the devices on the other side of the firewall. If I enable WCCP the SSH connections fail. The SSH to the router itself is fine, I am not using the self zone for router protection. I had seen a few posts on WAAS but the only one mentioning a config statement in the firewall was on 4.0 WAAS and the command is no longer on the IOS firewall. Is this supposed to work transparently or am I missing a config?
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Mar 15, 2012
How are asa5540 in high availability mode upgraded for their versions.
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Dec 28, 2012
I am encountering some problems setting up my new polycom hdx 8000 behind ASA 5540?I have opened reuired ports through the firewall ( incoming and outgoing). I have enabled inspection h323 on ASA and enabled the option NAT is 323 compatible on Polycom.
3230-3243 tcp
h323 tcp
h323 udp
3230-3285 udp
Here is the problem.I get connected to the call but I cannot the remote site cannot see and hear me.But I can see and hear them.
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Aug 15, 2012
I am having difficulty following the logic of the port-translation. Here is the configuration on a 5505 with 8.3,So I would have thought the outside access-list should reference the 'mapped' port but even with 3398 open I cannot remote desktop to the host. If I open 3389 then I can connect successfully.
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Jul 16, 2012
i need to upgrade ASA 5540 from 7.1 to 8.4 for secure connect feature of Cisco Jabber Configuration. Support forum guides that, i need to follow upgrade path from 7.1 --> 7.2 --> 8.0 --> 8.2 -->8.4 and also do a memory upgrade from 1GB to 2GB.
[URL]
I need to use this feature for only three or maximum four users in company then would i really need to do memory upgrade? or can i go with 1GB memory?also how i can get the prices of part number "ASA5540-MEM-2GB=" at cisco.com?
ASA-ISB-HQ# sh version
Cisco Adaptive Security Appliance Software Version 7.1(2)
Device Manager Version 5.1(2)
[Code].....
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Nov 19, 2011
ASA5540# sh run nat-control
no nat-control
this means higher security can talk to lower security without NAT rules
Question 1) - if I want higher security zone to to talk to lower security with NAT rules. I would use statements like below. Am I correct?
nat (dmz) 1 0.0.0.0 0.0.0.0
nat (inside) 1 0.0.0.0 0.0.0.0
global (dmz) 1 interface
global (inside) 1 interface
Is this correct? So in this case I am kindly of like overriding the no nat-control statement ...right?
Question 2) - Now I have no nat-control enabled. Would the below statements (nat 0) be of any use for NAT exemption??
nat (dmz) 0 access-list dmz-nonat
nat (inside) 0 access-list dbase-nonat
And do I have to have a global statement for NAT 0 ...like below?
global (dmz) 0 access-list dmz-nonat
global (apps) 0 access-list dbase-
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Jun 10, 2012
I Have Cisco 5540 with AIP-SSM-40, recently i config AIP-SSM-40 to capture all traffic from all interface any to any with promiscous mode and if card fail traffic still flow throuh asa, but after that i can't login to cisco ASDM, the error is "Un Able To Launch Device Manager From xx.xx.xx.xx"
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May 11, 2008
I have a remote site customer with a Cisco ASA 5540 running SSLVPN (Anyconnect)(8.03). It currently only serves about 450 SSLVPN clients. Since last friday, they've seen the CPU utilization go up to high 90% while only serving 400+ remote users. I saw some high cpu utilization bugs, but none looked to be relevant. How I can find the root cause of the CPU high utilization?
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Apr 26, 2011
Just upped our external ASA-5540 pair to 8.4(1), and now one of our nat's is busted.
Here's the lowdown:
Our public IP for our IronPorts ends in .167. That IP is natted to a VIP on our ACE, which load balances to the IronPorts.
The outside interface of the ASA uses .162, which has been the pat for all outbound traffic for a few years... except for the subnet that houses the IronPorts. Due to reverse lookup, that subnet uses the .167 IP address for all outbound traffic.
After the code upgrade, the nat won't work. No email sent or received. Nothing but Deny's on the ASA with flags reading either "SYN" or "RST". IE: Apr 27 12:56:11 10.22.151.41 local5.crit %ASA-2-106001: Inbound TCP connection denied from 69.25.174.17/36917 to 207.236.211.167/25 flags SYN on interface outside
If I return the subnet pat back to the outside interface, then inbound traffic works fine, though reverse lookup fails and anyone running a reasonable spam filter won't send to us.
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Apr 29, 2012
I have two Cisco ASA 5540, these ASA running ver 7.2. and used mainly as VPN gateways.My question is simple, Apart from the extra AnyConnect client functionality and the higher encryption, is there any specific security benefits (related to the VPN use) for upgrading to ver. 8.x ?
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Jan 26, 2013
I have to use GNS3 for simulate ASA5540.but it does not work. I've installed latest GNS3(0.8.3.1 all in one) in Win7 32bit environment, and used IOS file is asa842-k8.bin.but i can't unpack it properly. it said "Couldn't find any ZIP header in asa842-k8.bin".
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Dec 19, 2011
I have two ASA 5540 working in Active/Standby mode. After I've upgraded them to 8.2.3 ver. I have the following issue: once a day presently active device arbitary reloadI have no err in show version and in syslogs:11:15:50 ASA : %ASA-6-302020: Built inbound ICMP connection for faddr 10.10.0.36/512 gaddr 10.0.0.16/0 laddr 1011:15:58 ASA : %ASA-1-104001: (Primary) Switching to ACTIVE - HELLO not heard from mate.
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Jan 3, 2012
I am having the EXACT same problem as this user:URL
Error: GnuTLS error -53: Error in the push function.
Response: 425 Can't open data connection.
Error: Failed to retrieve directory listing
Response: 421 Connection timed out.
However I am using implicit instead of explicit. Here are the outputs of items that have been requested in the other thread.
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Mar 13, 2011
We are try to connect ssh via outside system (from Internet) its was not getting connected.
When we try to connect from outside pool of ip than its working.
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May 20, 2012
I have 2 ASA 5540's that I want to run in HA A/F. The active ASA has an IPS module running. I no longer need this and would rather remove it than purchase another module for the spare. What is the process to do this safely? After removal will the HA wizard recognize that the module was removed or do I have to update the software?
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Sep 23, 2012
we have noted the automatically removing of the only "nat (inside,any)" line, during the upgrade of ASA 5540 from 8.4(3) to 8.4(4) 1: why ?
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Mar 19, 2012
there was remote FTP - users behind ASA5540 can connect to it.
Now, with this ftp there is SSL/TLS encryption added and users behind this ASA can't connect to this FTPS.
It this possible for users behind ASA to connect to FTPSs?
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Jul 20, 2011
I was looking in the CISCO webpage how to load an IOS from a tftp server but i got some questions:
I got the information from this webpage: [URL]
rommon #1> ADDRESS=10.132.44.177 <---- Which IP address? the one that I got on my firewall?
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