Cisco Firewall :: Broadcast Forwarding On ASA5510
May 8, 2012
Situation: On a Customer Site we have a Cisco ASA5510 in routed mode, and we have 2 networks which are both routed fine. The Customer has one device+ on lets say Network1 and a device2 on Network2.
Problem: Device1 now needs to communicate with Device2. To initiate the communication Device1 sends out a broadcast to find other devices. How can we tell the asa to just take that broadcast from that specific device1 and "route" it through Netzwork2. Is there any chance to get this working?
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Dec 17, 2012
I'm looking for an example config of how to run dual ISPs while doing port fowarding for one of the publicly facing IPs. This is on 8.4 so
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Sep 6, 2009
I have problems to connect a MAC-Server from the wireless-network (WLC-4402-50-K9, Version 5.1.163). The wired clients doesn't have problems to connect to the MAC-Server. The connection works over broadcasts. The wireless-network don't forward this broadcasts. The broadcast-forwarding feature is activated. It is no problem to the MAC-server from the wireless-clients. The hole network is in the same IP-network (one broadcast-domain).
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Jul 31, 2012
I have 2821 router configured with two subinterfaces. This router is connected on cisco 2960 switch. The trunk on 2960 is configured without any prunning of vlans. I noticed that udp broadcast traffic is being forwarded through my router on native vlan 1 (this interaface do not have ip address configured). Below is configuration:
Router:
interface GigabitEthernet0/0
no ip address
duplex auto
[Code]....
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Jun 6, 2012
my question regards to a pair of WLC 4402 with 7.0.98.0 software.Actual, our security policy does not really allow any peer-to-peer communication in a wireless LAN. Therefore we set the 'P2P Blocking Action' to drop, and the 'Broadcast Forwarding' feature to disabled (default).But now there is a special requirement for two mobile endpoints to communicate with each other, because one device controls the other.To test the communication, we first disabled P2P Blocking (without success) and further enabled Broadcast Forwarding to bring the communication up. Now it works, but the configuration disagrees with our policy.
1. Is there an alternative configuration as described possible, so that we do not violate the security policy? To allow only p2p connection between the two devices, ist should also be possible to drop any else by an ACL. But how to fix the problem with the broadcast, because of the needed ARP? My idea was to use a static ARP entry, but as far as i know, one of the both devices is not able for it.
2. Because, I did not find any detailed documentation:
2a. with enabled Broadcast Forwarding, the controller forwards all broadcast for any configured SSID, right?
2b. is the broadcast limited to the source VLAN/SSID?
2c. is the broadcast limited to an AP, to an WLC, or is it broadcasted to every AP on every WLC that has the relevant SSID?
we already have two new 5508 but not in an operational state now, because we plan to implement new 3600 APs.Do these WLCs offer more/another circumstances or possibilities?
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Apr 26, 2013
We have a cisco 2500 wireless controller with LAPs.Our devices require Broadcasting to be enabled. So I had to enabe broadcast forwarding under the Controller tab.It appears this option is a global seeting. Is there a way to enable Broadcast Forwading for an specific WLAN or SSID?Can we isolate broadcast data to an SSID or a WLAN?
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Jun 6, 2012
ASA 5510 have two model Bun-K9 and Sec-Bun-K9 from the datasheet find out difference Port related and Redundancy. My questions is : Have any major difference for Security service between two model ?
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Jun 11, 2012
I am able to ping from Switch to firewall inside ip and user desktop ip but unable to ping from user desktop to FW Inside ip.. config is below for both switch and FW Cisco ASA5510....
TechCore-SW#ping 172.22.15.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.22.15.10, timeout is 2 seconds:
[Code].....
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Jun 29, 2011
I have two ASA5510's set up in failover, and the secondary keeps crashing after doing the interface checks when bringing failover up. This only happens if I try to upgrade the image on the secondary to anything newer than 8.4.1 (I've tried with 8.4.1-11 and 8.4.2). The primary one run just fine with new images.
I don't have the exact error right now, as I need to do a screen capture from console. It's just a huge crash dump.Are there anything I might have missed during the upgrade? Should I cold-boot both the firewalls in the correct order?
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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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Jul 21, 2011
I have a ASA5510 and I have a question about the speed the ports can handle, here is one port:
-interface Ethernet0/2
- speed 100
-shutdown
- no nameif
-no security-level
-no ip address
it's ethernet and not fastethernet so I figure it will only go to 10Mbps, but at the same time I can hard code the speed to 100.
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Feb 22, 2012
i have cisco ASA 5510 Firewall using in my network, i have planning to upgrade the Flash memory from 256 mb to 512 mb and the RAM from 256 mb to 1GB.
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May 4, 2012
I have a cisco asa 5510 with security plus license in Live enviroment . I need to add a secondary firewall . I was planning to do in active /standby mode for failover .But i have a doubt , when i do "show version " on live asa output says Active /active failover , does this means that i can only configure failover in active/active mode not in active/standby (which i want to do )?
Maximum Physical Interfaces : 8
VLANs : 20, DMZ Unrestricted
Inside Hosts : Unlimited
Failover : Active/Active
VPN-DES : Enabled
VPN-3DES-AES : Enabled
VPN Peers : 25
WebVPN Peers : 2
Dual ISPs : Enabled
VLAN Trunk Ports : 8
AnyConnect for Mobile : Disabled
AnyConnect for Linksys phone : Disabled
Advanced Endpoint Assessment : Disabled
UC Proxy Sessions : 2
This platform has an ASA 5505 Security Plus license...
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Feb 12, 2012
i am using Cisco ASA5510 Firewall in my Network in the distrubition Layer .Private Range of Network Address use in the Network and PAT at the FW for address translation.presently encountering an issue the users behind the FW in my network unable to RDP at port 2000 presented at the Client Network.Able to Telnet on port2000 but not RDP . any changes needed at the FW end to get the RDP Access.
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Mar 14, 2011
We have to use scp on all of our network devices. It worked quite well on our routers and switches but I can't seem to get it to work for the firewalls and IPS. I enabled scp on my ASA5510 using the command "ssh scopy enable". I also ensured that a rsa key was generated and that ssh ver 2 was enabled. But I can't seem to locate the commands to actually have my firewall either copy it's configuration to a server or reach out to a server to pull down a file. We are using IOS 8.2(1).
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Mar 22, 2011
I have a customer who wants to prioritze rdp traffic throgh the firewall.I know that its port 3389, but outgoing traffic is a random port number.Any smart way to catch this traffic and get it in the LLQ ?
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Sep 13, 2012
we have ASA 5510 which we need to upgrade from 8.0(3) to 8.2.5. can we directly switch to 8.2.5 from 8.0(3) , if not what all versions we need to go from.
What all point needs to check before that following is show flash output.
97 14635008
Jan 01 2003 14:12:16 asa803-k8.bin 98 4096
May 14 2008 21:22:10 tmp 2 4096
Apr 20 2008 02:21:46 log 6 4096
Apr 20 2008 02:22:16 crypto_archive 99 6851212
[Code] .....
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Sep 18, 2011
My device has 3 interfaces configured: inside, outside, DMZ. Right now I can access the DMZ from the Internet and I can access the DMZ from the LAN using an exempt nat statement. I am having a few issues setting up DMZ > LAN access however. The servers running on the DMZ need to send information to my LAN such as syslog traffic for example. Will DMZ traffic be NATed or should this somehow be excluded? Bascially all LAN devices should get to the DMZ devices by their actual IP and vice versa. Are there any special statements I need to add to the ASA such as nat or ACLs to make this work? My LAN is 10.10.6.0/24 and DMZ is 192.168.254.0/24.
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Oct 20, 2011
I have a ASA 5510 with asa8.4(2) and asdm6.4(5)205. Have a new basic config, nothing special at this time. I just cannot seem to get from the inside to the outside. From the outside interface I can ping, so I have a good Internet connection. [code]
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Apr 24, 2012
WE have a DMZ on ASA5510 8.4, it can access anything internal interface but cannot get out to internet or outside interface. I try to ping from a host in the DMZ to 8.8.8.8 and get this in the log 6Apr 25 201208:24:431100038.8.8.80172.10.1.1501Routing failed to locate next hop for ICMP from outside:8.8.8.8/0 to inside:172.10.1.150/1. [code]
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Apr 5, 2012
I am having ASA5510 firewall which has 1GB RAM currently. I want to upgrade to 2GB. When I opened the box, I can see only 1 slot to insert the RAM. I searched in Cisco website and I got to know that I need to use 2 x 1 GB RAM. So, I need to have 2 slots to do that. But, I am having only 1 slot in the box.
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Mar 30, 2011
We have an ASA5510 with a backup ISP connection protecting our corporate network. I also have a mail server and I would like to route SMTP traffic over the backup network. I realize that the ASA5510 does not support PBR, but I also know that I can use static NAT rules as a workaround to direct specific types of traffic over a particular interface (e.g. "static (outside,inside) tcp 0.0.0.0 www 0.0.0.0 www netmask 0.0.0.0" and "static (backup,inside) tcp 0.0.0.0 smtp 0.0.0.0 smtp netmask 0.0.0.0"). is it possible to use something similar to force a particular host to use a specific interface? I have tried to make this work on my own without success. Is it even possible?
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Dec 5, 2012
I bought a Cisco ASA 5510 (P/N: ASA5510-BUN-K9) and i would like to know if i have to buy some license,What i mean is, for the basics, it still being necessary aquire some license?
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May 31, 2011
We are about to upgrade our ASA's from 7.04 to 8.2. Obviously I will be opening a TAC case to assist with the upgrade and I will also be upgrading ASDM software at the same time. These production firewalls are paired with an active --> failover scenario and not active --> active. I had previously engaged cisco regarding the upgrade and they have recommended an upgrade path to ensure success. Also, I have a pair of test ASA's that I've gone through the upgrade process with - documenting the changes in commands and any changes in my config (I didn't notice any).So, the reason for my post is this: What are the gotcha's that you may have run into when upgrading your ASA's?These are fairly high visibility ASA's and any downtime due to the upgrade needs to be mitaged as much as possible.
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May 26, 2012
I have a 2811 ISR configured to provide the following services to my network:
Internet access to LAN users Cisco Call Manager ExpressSite-to-stie VPN to 3rd party networksVPN server to provide VPN access to remote usersSecurity Zone configurationsStatic NAT configurations Now I recently just got the ASA5510 device and I am not sure how to go about with the setup, whether to put the ASA in between the internet and the ISR (Internet - ASA - ISR - LAN), or put the ISR in between the internet and the ASA (Internet - ISR - ASA - LAN)?
While i know I can move most of the config unto the ASA, i know that the CME cannot be moved, hence I would like to do the setup such that users on the network still have access to CME.
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Apr 24, 2012
We have an ASA5510 and I am getting absolutely no response from the console port. Not even a blip when I turn it on. If I leave the compact flash in the internal bay, I get Green Power, Amber Status, Amber Active and Green VPN when I start it up. The Flash LED flashes Green twice then goes out. If I move the compact flash to the external bay, all of the other lights remain the same as described above but the Flash LED goes to steady Green. How ever, there is still no response whatsoever from the console port. Have replaced the DIMM but that had no effect. This is a four (4) slot ASA5510 and I have just the one DIMM in slot P13 as described on a post I found. The power supply fan comes on as well as the two (2) fans that cool the heatsink. The other two (2) fans on the expansion module side do not come on.
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Aug 17, 2011
We just switched to a 5510 from a PIX 515 last evening, and the only things that are not working are any services from the outside to the inside. Example: I am unable to connect to a RDP server on the inside from the outside. I've been looking at the config for the past five hours, but am unable to see my mistake. Running 8.2(1) People on the inside are able to get out.
domain-name aaaa.org
names
name 10.10.8.13 mailserver
name 10.10.8.12 video-conf
name 1.1.1.2 PubMail
name 1.1.1.3 VidCon
name 1.1.1.5 Ms-Aderson
!
[code] .......
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May 15, 2013
Upgrade from firmware 8.21 5o 8.31? I am installing 1GB of memory in my ASA 5510 and in the process I have upgrade the firmware.
- Will the upgrade change my configuration or will I have to change this manually myself at some point
- What is the meaning of "Real IP" I am not sure what the means (reading up on it now)
- What else should I be concerned about during the upgrade?
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Mar 29, 2011
i need to move from a pix 515e. V 6.3 to a asa v 8. From what ive read i can use the pix to asa tool to get the converted configuration file to the new asa. So far so good, however, the pix has conduits which i read must be converted via the occ tool. So i ran the pix to asa conversion then ran the occ tool on that output but i keep getting errors. It is not liking the nameif outside, inside, and dmz lines. If i manually edited them out before i run the occ tool it runs but warns there are no interfaces.
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Jul 17, 2011
We have an ASA5510 which keeps resetting itself for no apparent reason. It does this several times a day and I cannot see any pattern to the times etc. I don't believe it is load related as it also happens overnight when very little is going through the device. When it happens the device just drops off the network (all interfaces) and then when it comes back a few minutes later we can see from the system uptime that it has in fact rebooted itself.
I initially thought it was faulty hardware, so I swapped the device for another 5510, but that does the same thing. I then added a third 5510 and configured it in with the second one as an Active/Passive failover pair. Both devices do the same as the first, the only differences now is that the passive device kicks in and takes over, so we have a little less service disruption each time.
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Aug 25, 2012
We have network topology:
Inside Network (172.168.1.0/27) --- ASA5510----- Outside network (192.168.10.0/24)
ASA5510 have: Inside interface: 172.168.1.30/27; outside interface: 192.168.10.254
And we config:
# object network obj_inside
# subnet 172.168.1.0 255.255.255.224
# nat (inside,outside) dynamic interface
[code]...
So, we í in from outside, we can't access web at 192.168.10.10?
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Apr 25, 2012
I have 30 IP cameras with a private IP address: 10.1.1.1 – 10.1.1.30. I have a Cisco ASA 5510 firewall. I want to be able to use one public IP address, example, 50.50.50.50
With a specific port to go to a different internal camera,
Example
50.50.50.50:3001 should be NATTED to camera 10.1.1.1
50.50.50.50:3002 should be NATTED to camera 10.1.1.2
[code]....
How do I do this? I know how to create NAT… just not like this.
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Jan 26, 2012
I have a requirement to NAT a spare address on the same subnet range as one of the firewall interface - however, because this is not allocated to a physical interface, there is no mac entry in the arp cache. the other end of the link from the firewall is connected to a router which has no idea how to reach this "virtual address" - again because there is no entry in the arp cache I have tried to put a static arp entry into the firewall but this doesn't appear to work either. Should I be using a mac address form a physical interface or can I create a dummy mac for this - If the router can't see the ip address, then users will not be able to target this address - so that the firewall can NAT to the real outside address.I have tried routes to null0 on the router and static arp entries on both devices but the user just times when trying to connect to 10.2.7.11 (nat to 10.2.32.11)
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