Cisco Firewall :: 5505 High Availability Over Dual WAN Connections
Mar 20, 2011
One of my remote sites acquires Internet connectivity via a cable modem service. This goes down intermittently, of course. I would like to purchase DSL service from the local telco and configure the edge ASA (currently a 5505) to use the cable modem path normally ... and fall back to the DSL path if necessary.
These seems hard to do. The edge box would need to evaluate the viability of a WAN path using some set of tests ... perhaps pings to a handful of major Internet sites. If all those pings start failing, it would stall for a minute, to give the WAN service provider time to recover ... then cut over to the second path. Cutting to the second path might mean pushing new DNS server addresses to clients (or perhaps the edge box would hand out both sets of DNS servers all the time and rely on the clients to try them all.) Once the cable modem provider restored service, the edge box would stall for a while (ten minutes? an hour?) and then cut back.
I'm willing to replace the edge box with something fancier (a bigger ASA or something sold as a router or whatever), although I'd like to stay under 10K (list) for such a replacement.
A customer is currently running a 5520 ASA pair in active/standby HA mode. The devices also have an IPS module, one of them using a temporary (60-day) license. So, right now, licensing is identical on both ASAs and HA is operational.
The question is what exactly will happen after 60 days, once the temporary license expires? Does HA shutdown completely once it's determined that the licensing isn't a 100% match any longer, or does it just cripple one feature (such as the IPS module)?
The customer is balking at purchasing SMARTnet for the 2nd ASA, so I need to explain exactly what is going to happen (if anything) once the license on the 2nd ASA drops off...
I am new to Cisco firewalls. We are moving from a different vendor to Cisco ASA 5520s.I have two ASA 5520s running ASA 8.2(5). I am managing them with ASDM 6.4(5).I am trying to setup Active/Standby using the High Availability Wizard. I have interfaces on each device setup with just an IP address and subnet mask. Primary is 10.1.70.1/24 and secondary is 10.1.70.2/24. The interfaces are connected to a switch and these interfaces are the only nodes on this switch. When I run the Wizard on the primary, configure for Active/Standby, enter the peer IP of 10.1.70.2 and I get an error message saying that the peer test failed, followed by an error saying ASDM is temporarily unable to connect to the firewall.
I have set up a zone-based policy firewall with HA on two 2911 routers as per the Cisco security configuration guide, for an active/passive LAN-LAN cluster. All works as expected, but there is one problem I find: when the control link between the two devices fails, they go into an active/active state as each member assumes it's the last surviving member. The ARP entries for the Virtual IPs on the neighboring devices point to the device that last claimed the active role (usually the standby device). This works in a way, just sessions don't get synched anymore (control link is the same as data link). Now when the link comes back up, the preemtion works and the active, former standby device goes back to standby. But the ARP entries on the neighboring devices still point to the standby device and nothing goes (also sessions established during the active/active state are lost due to resync with the now active member).
This is a single point of failure and what I need is a way to mitigate that. Under:
redundancy application redundancy group 1 control <interface> protocol 1
only one control interface is allowed. Other manufacturers with similar functionality provide for the possibilty of a backup control link, for example the internal LAN interface or a dedicated backup link.
How would I go about that? Maybe use a port-channel for the control/data link (but I'm out of interfaces)?
One of my customer wants to upgrade their Cisco ACS version from 4.0 to 5.3. The client has existing ACS version 4.0 windows on VM with two instance and need to upgrade to 5.3 Linux.As per my understanding following version are supporter to upgrade ACS to version 5.3 ACS 184.108.40.206ACS 4.1.4ACS 220.127.116.11ACS 4.2.1 but unfortunatlly there is running 4.0.I suggested to my client the upgradation for ACS and proposed this Upgrade lisence L-CSACS-53VMUP-K9 and CON-SAS-CSACS3V? how I can do the smooth deployment / Migration from 4.0 to 5.3 with (A/P)high availability.
Current environment is Cisco 2125 WLC managing ~12 3502E AP's for a single location. Client is looking to provide HA for the single 2125 WLC. With the 2125 now EO-Sale is it possible to go with one additional 2504 WLC and leverage the existing 2125 or would it require going with just (2) 2504's?
I am upgrading the Wireless Infrastructure with two 5508 WLC.I am setting up High Availability, but I think is not quite working.
Primary Controller = WLC1 Secondary Controller = WLC2 LAP = LAP1 LAP1 has WLC2 as the primary controller for HA LAP1 has WLC1 as the secondary controller for HA
While connected to LAP1, I shutdown WLC2. After ~ 20 seconds, LAP1 move to WLC1.I lost connection from LAP1 Don't LAP1 should move with all its clients to WLC1?Am I missing something in my configuration?
I have to install and configure two 2901 routers at different location with high availability. These 2 routers would be connected through WAN, now I would like to configure high availability bwtween two routers.
I have attached a small diagram of the placement of 2 routers.
how do I configure high availability between these 2 links or routers.
I just want to know if i need to support High Availability in Cisco Secure ACS 5.1 appliance, will the base license suffice or do i need to buy Security Group Access System License/ Large deployment License. Again, do we require license for each appliance or just one is enough?
I Suppose the licensing rules are same for the Vmware version also.
Yesterday I discovered the primary and secondary CAS were both in active state and reporting their fellow peer as dead (I did this using ./fostate.sh), causing authentication errors on the network. I had to stop the perfigo process on the primary one to restore service.
After closer investigation I have discovered that when I put my laptop on the same subnet as their eth2 interfaces (eth0, eth1 and serial are not used for heartbeat only eth2), I can ping the eth2 ip address for the primary device, but can't ping that of the secondary device. See configs and outputs below. I am also wondering why the secondary CAS shows its eth0 and eth1 interfaces as fake0 and fake1.
I will install next week at a customers side a new Pair of 5508 Controller. They have at the moment one old 4404 with about 70 APs.So the bought the new 5508 with HA Pair.For the HA i will need 7.3 i read in the High Availability (AP SSO) Deployment Guide.There are now two 7.3 Versions, or i can choose the new 7.4 Version.
I am having issues trying to track down what is causing a high number of connection on our FWSM in our core 6509 switch. I recently upgraded my FWSM to 3.1(20) and I'm looking for a tool to be able to find the culprit. When I receive these messages I try to get onto the firewall in time to be able to get information regarding this issue but by the time I do the device recovers. Is there a way to tweat the threshold of the SNMP trap for high connections? Is there any way I can retreive this information via SNMP? Is there are command that will allow me to extract the local IP making the most connections?
What consequences could i have if i install a WiSM-2 module into a pair of 6500 configured in VSS and another WiSM-2 module into other pair of 6500 configured in VSS for serving a 300 APs??...in this case, do i need to configure mobility groups for guarantee a high availability and also redundancy of controllers?Under the best practices, is much better having the two WiSM-2 modules into a single pair of 6500 configured in VSS??
I am having an issue when implementing an additional internet connection on our ASA 5510. The new connection is "TWCOutside". I was my understanding that static NAT would force our externally hosted servers (Email, PPTP VPN, and FTP) to continue to utilize the "ATTOutside" connection. Our remote site-to-site VPN traffic has two static routes configured to force it to continue to use the ATTOutside connection.When I switch the metric on the 0.0.0.0 0.0.0.0 18.104.22.168 route to 1, and change out default dynamic xlate to use "TWCOutside", it "mostly" works as expected. Email, the PPTP VPN server, and our remote site-to-site VPN server continue to use the ATTOutside connection as designed. Our end users begin using the new connection for thier internet browsing.
However, our FTP server, in the DMZ, completley loses outside access. It cannot ping to 22.214.171.124, or resolve DNS queries. The is a static NAT statement for this server, as it is using one of our dedicated public IP addresses. I need it to continue to do so for the next few weeks.Effectivley, we just want to give our end users internet browsing on the new TWC link, but leave everything else on the old ATT link for the time being. The only problem I am having is the DMZ connection. I am currently "rolled back", so no one is using the new connection until I figure this out. I can easily switch the metric and dynamic PAT back to using the TWC connection, but I need to have some things to try with the DMZ before doing so. [code]
My client is transitioning to a new ISP and want to migrate there web servers in stages. therefore they would like to keep some servers running on the old ISP and some servers use the new ISP.
I have set this up in a lab and keep running into routning issues (I am using 5510 for the lab as I do not have a 5505 available). I know that ASA's don't support PBR. Is there any way or trick to get this to work on the ASA?
I have a feeling this is not possible and we would need to get another ASA or a Router to get this to work.
I need to configure my asa as follows: Two active ISP´s, one(ISP1) for outbound traffic (normal internet traffic) and the other one for inbound traffic(ISP2), http to a web server in the inside network. I have two default routes, one pointing to ISP 1 with metric 1 and the other to ISP2 with metric 2. I perform dynamic nat to ISP1 interface with hosts in the inside network and static nat to ISP2 interface with web server.
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.
Currentry all traffic is passing thru Outside2 and it's correct, also s2s and ra VPN is also running on Outside2 ?My current case is to use Outside1 for webvpn services only. I can't use Outside2 becouse on 443 port other services are running, also I cant change webvpn port to other.
How can I match packets incoming to interface Internet1 from Interner side nad route them back thru Internet1 interface.
IPSLA is not a good solution becouse I need to have both WAN links used Now in routing table I have only onre record
S* 0.0.0.0 0.0.0.0 [20/0] via x.x.x.x, INTERNET2
for link with lower metric, but after some problems with provider for link Internet2 routing has changed for Internet1 and didn't change it back after resolving problem? how to create it for all traffic incoming for Internet1 interface from outside?
I have ASA that just started to reboot through out the day yesterday. It seems to happen every few hours but not in a pattern.Right before it reboots there is a flood of sys log id 305006 messages "portmap translation creation failed for tcp src inside:xxx dst outside:xxx the xlats go from around 2-3k to about 30+k then crash.Memory ussage is already pretty high normally on this device (about %75 used) CPU is around %15-20 I notice that the portmap translation errors are always from 3 inside host.
We have a user who needs to access a vpn from his MAC through an ASA 5505. The user is getting an IP via DHCP and the outside interface of the ASA gets it's address via DHCP as well. The user states that when he is home or anywhere else but behind the ASA it connects fine, but once the ASA is added it times out. He is able to get to the internet from the machine without any issues. Looking over the config on the firewall it isn't set to deny any traffic and there is a global set on the interface and it is nat the inside interface. There is no global policy in place so I was considering implementing the following:
We have two 4400 WLC's. We have around 20 access points in our network.If we assign controller1 as primary for half of the access points and controller 2 as primary for the other half, does this mean the association of the ap's indicate load balancing by the controllers. Does this mean wlc does load balancing as different ap's associate on different controllers. or does it only server as active-standby wlc.
I have a 5505 configured with a active/standby dual wan setup using the sla tracked connection settings. Is there a way to configure the ASA to stay on the backup connection after activating? We had a situation where the main T1 was bouncing, so the backup connection was being activated and deactivated very often. The problem is that there is an app being used that does not allow users to reconnect to dropped connections immediately, so every time the asa switches wan connections it causes a significant disruption.I should note that I already set monitor options frequency to 240 seconds. I could set it higher, but then we have a longer delay when the main connection dies.
I have a small office with about 20 people. I currently have a T1 line which feeds a Cisco ASA 5505. I would like to replace the T1 line with two (2) ADSL lines. I need a dual WAN switch/load balancer. I researched a bit and found that Cisco RV042 will probably work for me even though I don't need another VPN and would have to disable it.
My question: Is there anothe device from Cisco or others which will give me the dual WAN and load balancing but not the VPN piece. My assumption is that it would be a less expensive device if such an animal exists.
I am trying to get up to speed on this topic as quickly as possible.
Here is my issue:
1) We are able to access the webiste
2) We are able to upload data packets
3) We allow the website to time out while we are uploading data packets
4) When we attempt to re-access the website the ip is blocked a) this includes pinging and trace
5) After an undertermined period of time the ip is unblocked and we are allowed to access it again.
The ASA 5505 router is the last forward facing stop before entering the VPN tunnel. We have tested by circumventing the ASA and we are unable to duplicate the disconnect. We have reviewed the config file and have not been able to identify what rule/settings could be affecting this.
when tracing port usage, the actions use 2 tcp ports and 1 udp port, the 2 tcp ports open and close by each transaction, when the ip block occures the 2 tcp ports are "dead" the udp port remains open (appearhently sending the remainder of the data packets)