Cisco Firewall :: ASA5505 Alias Secondary Subnet / No Communication Between Them?
Aug 17, 2011
As this is an ASA 5505, unlimited users, I must use arp alias to allow a secondary network.
Inside network: 10.200.31.0/24.Additional inside network: 10.200.12.0/24
Clients in both networks can reach internet, but they can't communicate with eachother. Hosts on the additional network can ping the ASA inside network IP, but nothing else. I get incomming hitcount for inside interface when 10.200.12.x tries to ping 10.200.31.x. In the error log, I see: [code]
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Feb 11, 2013
I have an ASA5505 which provides internet (just internet) for about more than 600 pc/laptops. Can 5505's DHCP support this number?
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Jul 11, 2012
I have a network with 3 sites that are on different subnets. Each site has an ASA Right now, I am only able to connect to the ASA that is connected to the subnet I am connected to.I want to be able to connect to the ASA that are on the remote subnets on the address of the inside interface.The sites are connected all together by site-to-site VPN.Is there any way I can achieve that without opening the outside interface directly on the Internet?
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Mar 23, 2012
I've got an 1811 router running 15.4 IOS and a cable modem with 5 static IP's attached to Fa0. I would like to dedicate one of those IP's to a dedicated internal subnet (10.0.30.0/24) but I am not sure how to accomplish this?
What would be the best method to accomplish this? Unsure of where to begin..
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Jun 5, 2012
I have an ASA 5510 running v8.4(3)9 and have setup a remote user VPN using the Cisco VPN client v5.0.07.0410 which is working appart from the fact that I cannot access resources on a secondary subnet.The setup is as follows:
-ASA inside interface on 192.168.10.240
-VPN clients on 192.168.254.x
I can access reources on the 192.168.10 subnet but not any other subnets internally, I need to specifically allow access to the 192.168.20 subnet,[code]
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Apr 12, 2011
Main Site allows communication from Remote Site via VPN to Windows ServerMain Site also has a secondary subnet that communicates ONLY through internet but NOT to the Windows Server.Sonicwall 192.168.168.x is main siteRemote Site is 192.168.0.x connecting to Main Site to access shared folders on serverSecondary subnet at Main Site is 192.168.0.x using Windows XP PC's. They are accessing a linux server at 192.168.0.215 which Main Site has no access to.VPN remote ip's are 192.168.0.x - they can successfully access the Windows Server at 192.168.168.100 BUT NOT 192.168.0.215.GOAL: Want to connect Remote Site to Secondary subnetWilling to make router changes or whatever is necessary to get Remote Site to access Secondary Subnet with the only exception that the Secondary Subnet REMAINS.VPN DHCP is turned off but willing to turn it on.Willing to make the Linux Server 'discoverable' on the Windows Server. Don't know linux at all but another co-worker set it up and can make changes.
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Jan 1, 2012
communication between 2 vlans.i have 2 vlans
Vlan 100
ip add 1.1.1.1
!
!
!
Vlan 200
ip add 2.2.2.2
i want to make communication between 2 vlans on firewall 5520 ASA 8.2.
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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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Apr 17, 2011
I am having two ASA 5550 firewall running in active/standby mode. With in last two months our secondary firewall got down automatically 3 times. Firewall is running with IOS version 7.1.2. how to proceed further troubleshooting because there are not any logs on firewall.
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Nov 11, 2012
How can I allow passive ftp communication in PIX 6.3(5)106.
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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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Mar 12, 2011
I configured ASA 5510 ...
Totally it had 5 ports..
How to provide communication between two different interfaces which had configured as same security level?
How many trunks will support ASA 5510 with base-license?
How to configure trunk to an interface with different VLNs( Router on a stick).
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Aug 10, 2012
I have a working environment but wondering if there is just a better way to accomplish what I am trying to do (without a layer 3 or 4 switch). Basically I have a few sub interfaces on my Cisco ASA5510.
Now what I do need is some of the VLANs to communicate with specific devices on the different VLANs. So for example I need computer 1 from VLAN 5 to communicate with 192.168.10.5 from VLAN 10 on ports 80 and 443.
What I am currently doing is settings the security level to 100 on each interface (including the DMZ).
Here is what I have:
interface Ethernet0/1.5
vlan 5
nameif Sub5
[Code].....
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Mar 5, 2011
configure ASA 5510 as below
inside users should communicate with Hosts on the DMZ Zone and at the same time they should go for internet towards outside interface
ASA with 8.3(1)
default security levels
attached is the digram for your reference need communicate form inside to DMZ
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Jun 11, 2013
I've been following most of the comments in regarding how to allow communication between two internal networks on a ASA5510 8.2.5 But I am still a little confused about to how to set my firewall. I made chages to it and still do not have the desired results.
I need to allow comunication between Interface 0/1 and Interface 0/2. See configuration file with fake or dummy ip address below.
ASA Version 8.2(5)
!
hostname ciscoasa
domain-name lxx.com
[Code].....
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Mar 12, 2011
Is it possible to provide communication between two different interfaces which had configured as different security level in ASA 5510?
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Oct 23, 2011
I have a Cisco ASA 5510 configured to access the internet, with an:
inside interface (ethernet 0/1) 130.130.0.254 and outside interface (ethernet 0/0) x.x.x.x
I have now configured another inside interface (ethernet0/2) on ASA with the IP 172.16.0.254 and I have connected it directly to another switch with a management IP 172.16.0.5.
The problem is that the two inside interfaces (130.130.0.254 &172.16.0.254) cannot communicate with each other thus the e0/2 172.16.0.254 interface cannot access the internet.
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May 29, 2011
Recently, I deployed ASA 5520 as our company firewall, everything was working fine except two main problem I still can not resolve them after I did a lot of research.
1. DNS rewriting - The internal user can not access the DMZ or internal server by put in the domain or external ip address. such as [URL] will resolve our wan ip address 210.0.0.83 ( internal ip address is 192.168.1.21 ).I used static (inside,Outside) tcp 210.0.0.83 https 192.168.1.21 https netmask 255.255.255.255 dns, but it will not work. We have our internal DNS server, but don't want to just add the domain as a record. Is there anyway to get the internal user to access Internal server and DMZ server through the public domain?
2. We also have an internal multiple subnet, another router was conneting to ASA firewall inside interface and using ip address 192.168.1.223, another subnet 10.1.15.16/28 is behind the this router, for the users in subnet 192.168.1.0/24, they connect firewall inside interface directly.I added an static route and intra-interface permit route inside 10.1.15.16 255.255.255.240 192.168.1.223 1same-security-traffic permit intra-interface I also added access-list inside_nat0_outbound extended permit ip 192.168.1.0 255.255.255.0 10.1.15.16 255.255.255.240access-list inside_nat0_outbound extended permit ip 10.1.15.16 255.255.255.240 192.168.1.0 255.255.255.0nat (inside) 0 access-list inside_nat0_outbound The internal users on 192.168.1.0/24 can ping 10.1.15.18 but can not telnet to 10.1.15.18 22. If I set 192.168.1.223 as one of the workstation on 192.168.1.0/24 default gateway, it can telnet to 10.1.15.18 22 without any problem.
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Nov 30, 2011
ASA 5505 and DMZ, I have a Base License.
What do I need to do for access inside network to DMZ?
I successfully configure, internet Access for DZM and inside network, web server can be accessed from internet, but I have problem to configure communication from inside network to DMZ.
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Feb 7, 2013
Just want to know if there is a way to configure secondary IP address on the outside/public interface of ASA/PIX.One of our clients have used most of their IP on the subnet given by their ISP. They use those IP's for staticallymapping to Servers inside their local LAN. Thus, they requested another block/subnet from their ISP. They will also use this for static mapping/port forwarding to other servers in their network. The current UTM they are using is allowing this but they would like to use ASA/PIX as their main Firewall. Is this even possible or is there a workaround for this kind of scenario?
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Jun 13, 2012
I would like to know if is possible to configure a secondary IP address in a 5505 interface ??
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Aug 27, 2012
We are in the process of implementing secondary ISP to our ASA firewall and We would like to run both ISPs in parallel so we can test until we finally cutover?
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May 8, 2012
I have recently configured a pair of ACE 4710 appliances in a FT group. The ACE's are deployed in one-arm mode, using Source NAT, with all routing to and from being done by a pair of PIX firewalls.
My configuration does not include the use of an "alias" IP address on the data VLAN interface within each of my contexts.
My understanding is that the "alias" IP address is similar to a HSRP address and if the ACE is deployed in Routed mode the default gateway for the servers can be configured with the "alias" address so as this is always available even if a fail over occurs.
if this is a correct interpretation and of use of the "alias" IP address and if so whether it is required when using a one-arm mode topology?
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Aug 26, 2011
I have 3 subnets that I all want to have my RV220W (1.0.2.4) as the gateway. Where can I add an alias into the router so all three subnets and communicate with it?
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Jun 20, 2012
I am setting up a network that will use the 1941 router with a cellular card (HWIC) to connect to the Internet for communication with remote stations in the field. The 1941 has a static IP address (166.142.xxx.yyy) on the Internet provided by the ISP (Verizon). The 1941 is connected via ethernet to the ASA5510. The end goal is to have the field cell routers (Digi Transport WR-44-R, also static IP) connect to the ASA5510 via VPN tunnels for communication back to the servers behind the firewall. I'm not sure exactly how to configure the 1941 so that the remote router can connect to the ASA using the public IP of the 1941 router. I have the 1941 working stand alone and can connect to the Internet and pass traffic, but I tried a static NAT to translate the public IP to the private IP of the ASA and cannot pass traffic. below is part of the 1941 configuration: [code]
Do I need to use VLAN bridging to accomplish the task or am I missing something with the NAT?
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May 15, 2011
Can we assign Secondary ISP-2 Pool IP to DMZ Server, network design attached for reference.
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Mar 3, 2013
I have two ASA 5520s in Active/Standby. I try and test this quartely to ensure it is working correctly. Everything works fine, except I have an issue with one interface. When doing a show failover, it shows the interface as failed on the secondary unit, and I am not sure why. It shows it as normal on the primary.
This host: Primary - Active
Active time: 9277305 (sec)
slot 0: ASA5520 hw/sw rev (2.0/8.2(4)) status (Up Sys)
Interface WaterworksCanopy (192.x.x.x): Normal
[code]....
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Jul 13, 2012
I'm trying to figure out why recipients of emails from my company show that the mail is coming from our dedicated wan ip instead of the ip alias setup thru the dedicated wan.The external ip address for the sa540, wan1 (no optional interface), is 82.134.79.122.The ip alias is 62.97.213.156 mail. unitec hsubsea. com resolves to 62.97.213.156 for external dns yet it is reporting as the 82.134.79.122 for some recipients.The mail server was never setup with the 82.134.79.122 ip so i don't think this is a dns cache issue.What issue in the SA540 would cause the system to show as mail coming from 82.134.79.122 instead of the ip alias 62.97.213.156?
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May 14, 2012
net send command not working. Even after starting messenger. Error : The Message Alias could not be found on the network
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Dec 5, 2011
We have 2 ASA 5505s in a data center at a remote site.
Whilst troubleshooting another issue I noticed the below. I don't know much about fail over but this would suggest that the secondary ASA is active and the primary ASA is on standby.
if the primary is "active" then how come the secondary is the active ASA? I would have thought that once the primary ASA became active this would assume the "main" role".
[Code] .....
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Nov 24, 2012
We already have a subnet defined to inside interface and is in produciton. the default gateway is this interface ip. In that setup now I have to add one more subnet and as the first subnet is been defined in ASA indside interface, I have to assign secondary Ip to the inside interface so that new subnet users can easily reach here and go outside.
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Jan 15, 2012
Cisco ASA 5505 Cannot Ping Secondary Internal Network.
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Nov 20, 2011
I have a single production 5510 with 2 contexts. Now I want to integrate the secondary failover unit. My question is: How much configuration needs to be done on the secondary firewall? How much of the configuration will be sync'd from the primary to the secondary when the secondary is connected?
For example, do I need to add the following on the secondary or will it be sync'd from the primary?
admin-context NAME
context NAME
allocate-interface Ethernet0/0.14
[Code].....
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