Cisco Firewall :: S2S VPN Between ASA 5520 And 5505 With 2 Subnets On Different VLAN
May 26, 2013
Site A:
ASA5520
VLAN data subnet 172.16.10.x/24
VLAN Voice subnet 10.0.0.x/24
Site B:
ASA5505 Base license
VLAN data subnet 192.168.10.x/24
VLAN Voice (restr) subnet 10.0.1.0/24
The callmanager is located on site A and needs to sent out DHCP-offers to site B through the VPN so the IP-phones can register to the callmanager. I got the VPN up and running for the data-subnet but i can't get traffic through the voice-subnet/VLAN.
Can the ASA's do the job or do I need to route traffic before the ASA's on both sides and sent it through the tunnel, configured both subnets as interesting traffic? Ofcourse the last situation I need to upgrade the license for the 5505 to gain more VLAN's.
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May 19, 2013
i have a asa 5520 that is working with three zones DMZ, inside and outside.
my DMZ is for all my branches and it had a /24 subnet my inside had a /24 subnet and all was fine i could talk to branches and they could talk to me. i also had all the branchess accessing internet via the ASA which is at HO. i changed the subnets from /24 to /21 and broke everything
below is the configs for the asa
!
interface GigabitEthernet0/0
nameif outside
[Code].....
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Jan 23, 2012
We have a Cisco wireless infrastructure in place that includes a guest network with its own subnet that is a sub interface of the inside interface on our ASA 5520. There are no routes for it to be allowed access to the internal subnets. So it can only access the internet. This is primarily used by the public, but we have several non employee personnel that we only want to give internet access and force them to access the internal network through our clientless SSL vpn portal or through other internet facing internal resources such as webmail.I have done packet traces from within the ASA and the break appears to be there is no ACL allowing the traffic back into the network once the web resource replies to the request and the traffic is attempting to come back into the network from the web resource. Is that as clear as mud?
I know that this has to be a common problem and a way around this is to allow the guest wireless network access to the internal network but only for the select resources that they require. And that this can be done seemlessly by network specific routes and or alternate DNS entries, but I would like to keep this simple and just allow them to access the web resource, webmail and VPN, from the guest wireless using internet DNS servers without route trickery.
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Jul 10, 2012
Not really a big problem, but not knowing the answer is killing me. This is what I have:
Host 1 <-> ASA 5505 <-> VPN connection<-> ASA5510 <-> Host 2
The problem is when one of the hosts trys to reach the inside interface of the remote ASA. E.g. Host 1 trying to ping ASA5510 inside interface. Again Host 1 and 2 have the same subnet address of 10.1.1.0/24. I have configured the ASA 5505 to do the the NAT translations.
[code]...
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Feb 27, 2013
I'd like to see some REAL LIFE comparisons of ASA firewall throughput (a bit like this one for ISR G2 Routers - [URL].
The reason I ask is that I recently upgraded a firewall from an ASA5505 to an ASA5520 on a small network where the only outside connectivity was a single 10meg Internet circuit with an IPSEC VPN (not landed on the firewall but on a router) to another site.
When I swapped out the firewall the users noticed a big improvement. The firewall is not doing anything out of the ordinary - no IPS or VPN, just standard state full inspection.
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May 3, 2011
I have been working with ASA 5510,20,40,80 but not with 5505 this vlan and its interfaces are quite confusing.Just want to know how it works and its connectivity to Cisco Switch.Do i have to put the interface of the switch in the same vlan as i am creating the interface vlan in firewall ?Now the switch port connecting to this Eth1 interface should also be in the same vlan ? i.e vlan3 ?? or it will be in trunk ? The default configuration shows the eth0 with no access vlan and interface eth1 with access vlan 2... does it mean the eth0 is in vlan1 ? (Nativ Vlan ) ???
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Aug 15, 2012
I need to NAT some subnets to one IP and other subnets to another IP. The range command want work because some of the subnets are out of order.For example subnets 192.168.1.0 - 192.168.7.0 and 192.168.25.0, 192.168.28.0 nat'd to 1.1.1.1. subnet 192.168.26.0-192.168.27.0 nat'd to 1.1.1.2
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Jul 31, 2011
We use Cisco Any connect with a Cisco ASA 5520 firewall. Today I changed the inside interface of the firewall's IP because i needed to do some inter vlan routing and needed to move the inside interface from the lan vlan to a routed port on our 3750.
Now people can vpn and authenticate to the MS radius inside but cannot access any network resources nor ping anything inside.
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Jul 26, 2010
I am a complete novice at networking, but I was tasked to have an ASA 5520 do inter VLAN routing (since my shop doesn't have a layer 3 router).As a basic setup, I am trying to have three workstations on three different VLANs communicate with each other. The attached screenshot shows the topology. I am unable to ping from a PC to the ASA...therefore I can't ping to other VLANs.
ROUTER CONFIG:
ciscoasa#ciscoasa# show run: Saved:ASA Version 8.3(1)!hostname ciscoasadomain-name nullenable password ###### encryptedpasswd ###### encryptednamesdns-guard!interface GigabitEthernet0/0no nameifno security-levelno ip address!interface GigabitEthernet0/1no nameifsecurity-level 100ip address 10.10.1.1 255.255.255.0!interface GigabitEthernet0/1.10vlan 10nameif vlan10security-level 100ip address 10.10.10.1 255.255.255.0!interface GigabitEthernet0/1.20vlan 20nameif vlan20security-level 100ip address 10.10.20.1 255.255.255.0!interface GigabitEthernet0/1.30vlan 30nameif vlan30security-level 100ip address 10.10.30.1 255.255.255.0!interface GigabitEthernet0/2shutdownno nameifno security-levelno ip address!interface
[code]....
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Nov 24, 2011
I have ASA 5520 and SSM-10 module. During copy between vlans, connected to gigabit port of asa the speed is up to 6,5 Mbyte/sec. Network cards and trunked switch are gigabit. I've temporarily disabled SSM but it didn't work. Here is my config. Also I found out, that putting SSM into bypass mode solves the problem. But I don't send any traffic to IPS. [code]
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Jun 18, 2012
I am coming to this forum because TAC and several CCIEs are having trouble finding me a solution to my problem.
I have Two 5520s each running 841 connected in two different data centers with two different internet providers. I have 100+ 5505s that have the capability to connect to either 5520 via EZVPN to either 5520. Up to now there has not been a need for a 5505 connected to one 5520 to talk to another 5505 on the other 5520. Each 5505 accesses network resources as in any enterprise network. Our company recently started telecommuting and I have been giving 5505s and a VOIP phone out to people. What was discovered is, if you are on one 5505 connected to a 5520 and the other 5505 is connected to the other 5520 the audio in voip does not work. If both the 5505s are connected to the same 5520 than everything works fine. Conversely a 5505 on one 5520 cannot ping a 5505 on the other 5520. 5505s on the same 5520 can ping each other no problem.
My problem: All 5505's are configured for a 172.18.xxx.xxx 255.255.255.224 subnet. This subnet is not used anywhere else. So I have a 100 Class "C" subnets carved up into 255.255.255.224 networks. If I look at a specific route for a subnet on one 5520 I see it pointed to the outside interface via RRI. I can look for the route in the 5520s connected CORE switch and I see the route pointed to the 5520. We have a fiber connection to the CORE in the other data center. The route is in this CORE switch as well. When I look for the route in the 5520 connected to this core it is not there. I have all other routes visible but not this particular route which should show on the inside interface. All I show on the 5520 are the 5505s connected to this ASA. So the 5520 is not processing the RRI subnets from the other 5520 and vise versa. Thats why a 5505 on one 5520 cannot ping a 5505 on the other 5520. I only see 172.18.0.0/27 on the outside interface of both 5520s. I do not see any 172.18.0.0/27 on the inside interface on either.
I have had numerous TAC cases open on this and no one seems to either understand my problem or have a solution for me. My local sales rep CCIE says the problem looks like a bug in 841 (which I am running) and that the ASA is not processing RRI from eigrp which I am running as well. The whole network is running the same instance of EIGRP including the 5520's.
My questions:
1) Is it possible the 5520 is not allowing 172.18.0.0/27 on both the outside and inside interface? Even though all subnets are masked proper the ASA maybe thinks it is being spoofed? I have not been able to confirm this using the real time log.
2) Could this really be a bug? I have looked at all the release notes and have not found anything resembling my problem. TAC has not recommended that I upgrade or downgrade my IOS.
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Jan 30, 2012
On our ASA 5505 We have a DMZ configured to use 2 ports, which are used by the mail and Web servers. So far everything works perfectly and this router has been very stable. Now I need to add more ports in order to accomodate prototype Web servers in the DMZ, but no more ports available on the Cisco. Looking through the ASDM though I noticed the DMZ seems to be configured as "VLAN 5", sure enough with VLAN ID 5. So I tried creating a VLAN with ID 5 in my ProCurve switch, isolated from other VLANs. My theory being that plugging on of the the router's DMZ interfaced onto this VLAN would allow me to add my test servers. Well, this seems to work, but for only a very short time. I can get the landing page from my test server to display, and then everything slows down to a crawl and communication seems to be blocked. Out of curiosity, I tried to put my prod server and email server on the VLAN, together and separately, but the same thing happens. At first, I can ping the machines, then after a few request, everything stops responding.
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Aug 15, 2011
I have a Cisco ASA 5505 that I have configured. The outside interface is vlan 2 and the inside interface is vlan 1. Port 0 of the ASA is configured to be in vlan 2 and is connected to the ISP provided subnet. Port 1 is connected to my private LAN subnet. I have an additional router connected to Port 2 for guest connectivity. Port 2 is configured to be a member of VLAN 2 so that it can access the ISP provided subnet. From the device connected to port 2 I can ping the vlan 2 interface address of the ASA and from the ASA I can ping the Default gateway of the ISP provided subnet. For some reason the router on port 2 cannot ping the default gateway of the ISP provided subnet. If the vlan were working the same as a vlan in a switch, I would expect to be able to do this. why it is not working or what I can do to get it working?
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Mar 14, 2013
I have IOS 8.0(4) and the base 50 User License...will this config work? I have two networks; my home network, and my lab. I want to split my Internet connection between them, but keep the networks separate for the most part. Will my license allow this config since I can't do DMZ?
interface Ethernet0/0
switchport access vlan 3
!
interface Ethernet0/1
switchport access vlan 1
!
interface Ethernet0/2
switchport access vlan 2
[code]....
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Nov 25, 2011
Our IPS has given us a second range of IPs as we were running out. Unfortunately, they can only give us two non overlapping range. I am running two ASA 5520 in fail over to handle our traffic but I don't know the best way to use both external ranges. This is not a failover scenario -- and I need outward facing servers on both ranges. It is adventageous to us to keep the two external subnets separating two of our operations so we don't want to bring everything into one subnet (long story).I have one NIC designated outside that will need to cater for both wans. As there are two subnet there are two gateways. How do I keep the traffic on track?
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Feb 12, 2013
is it possible to configure a webfiltering on ASA 5505,5510,5520 ? So if its possible can you provide us a configuartion template.
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Jul 17, 2012
I am working on ASA 5505 with Base License that uses 3 VLAN's.
-My VLAN 1 is for used for my home network.
-VLAN 2 is connected to the public Internet and my IP gets assigned by ISP dynamically.
-VLAN 3 is DMZ where I will have few VM's that would need access to and from the Internet.
I am looking to work with following:
1) 172.16.0.2 that sits on DMZ will need to access public Internet over port 80
2) Permit access from the Internet over port 3389 to 172.16.0.2
3) Permit any host on private VLAN (192.168.0.0 network) to access 172.16.0.2 over the port 3389
4) Permit second VM on the DMZ VLAN let say 172.16.0.3 to access public Internet on all ports. Access in to this host is not permitted.
5) For some reason DHCP hosts are NOT getting DNS (8.8.8.8) entry when IP hets assigned or renew. I have a statements below but it is not working.
Also, if ACL rules for VoIP are written correctly. The goal is to permit these ports (SIP related) to access VoIP router. [code]
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Jul 8, 2012
Ive been readin all over the internet (including this site) trying to figure out if the asa can handle intervlan routing. Im not sure what I am missing on my config to get this to work. Ive read that it can work and Ive read that it cant work. How to get this to work on my asa 5505.
Here is my setup
Cable Modem ---> ASA (eth0/0)
(eth0/2) -->unmanaged switch for LAN connectivity
(eth0/3) --> Access point for wireless LAN connectivty
My config is attached
What I would like to do is be able to communicate between vlan3(LAN) and vlan4(Wireless LAN)
Whats strange is I can RDP between the two vlans but I cant ping or anything else.
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Sep 2, 2012
ASA 5505, I got a security plus license which allows multiple VLANs.I want to be able to configure the ASA to allow only RDP session (One way) to another Switch where all the VLANs are. I've attached a pic of what I want but I'm struggling.
I looked at documentation saying you should have inside and outside interface but I'm not sure on this scenario.I've configured inside interface on ASA e0/1 and interface VLANs but not sure what to do between ASA and Switch?
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Feb 12, 2013
This is for an ASA 5505 with the base license...I have a situation where I will not have one interface in my outside VLAN, but instead I want to have interfaces 1-7 in my outside VLAN and interface0/0 in my inside VLAN.
Is this supported with the Base license, and if so how would I do this? Do I still just need to assign one IP address to the outside VLAN?
Or will I need to upgrade to the Security Plus license and put each interface in a separate outside VLAN, so in essence I would have 7 outside VLANs each with the same security level (0)?
My situation is that I have several partner networks that i want to "aggregate" thru my one ASA 5505. So each outside interface represents a separate partner (outside) network, each of which I want to get to from my inside network. Hence the many outside to one inside.
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Apr 9, 2012
I am struggling on a problem for over 2 weeks despite of various researches.
We have a Cisco router, then an ASA 5520 8.4(3).
The private interface of the ASA is connected to a switch, and so on connected to one interface of the router.
The private interface is as following : 129.88.63.253 255.255.248.0 (/21) =>
It is in the 129.88.56.0/21 subnet
Here is the part of the router config we are interested in :
!
interface Vlan32
ip address 129.88.63.254 255.255.248.0 (this is the tunnel default gateway configured on the ASA - 129.88.56.0/21 subnet)
ip address 129.88.71.254 255.255.255.0 secondary
ip address 129.88.75.254 255.255.252.0 secondary
ip access-group CVPN-depuis-129.88.56 in
ip access-group CVPN-vers-129.88.56 out
ip verify unicast source reachable-via rx allow-default
no ip redirects
mls rp ip
!
On the ASA, there is currently one default route for the tunneled traffic :
route Private 0.0.0.0 0.0.0.0 129.88.63.254 tunneled
As you can see, it's on the same subnet as the primary IP address of interface Vlan32 on the router.
The scenario is as following :
- we can connect to the VPN with the appropriate alias (LDAP connection), then we get an IP address in the defined range (it's a local ASA pool)
- the pool is : 129.88.71.0/24
- but, once we are connected, we can't do anything, because it seems like we don't have any network access
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Aug 25, 2012
We have a subnet setup on the ACE as follows:
interface vlan 300
description CALLISTA Environment
ipv6 enable
ip address 2001:388:608c:8b8::fffd/64
alias 2001:388:608c:8b8::fffe/64
peer ip address 2001:388:608c:8b8::fffc/64
ipv6 nd ra interval 30
[code]....
Notes:There is the primary subnet 130.194.13.0/26 and the secondary IP subnet 130.194.19.192/27?The nat-pool is configured to allow server initiated connections to their frontend VIP when necessary.We are noticing that when a server on the 130.194.19.192/27 subnet needs to communicate with a server on 130.194.13.0/26, albeit on the same VLAN, the destination server sees connections with a source IP of 172.16.25.231, which is the NAT address. Is this expected behavior, where connections between IP subnets, albeit on the same VLAN are NATed?
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Aug 25, 2012
We have a subnet setup on the ACE as follows:
interface vlan 300
description CALLISTA Environment
ipv6 enable
[Code].....
We are noticing that when a server on the 130.194.19.192/27 subnet needs to communicate with a server on 130.194.13.0/26, albeit on the same VLAN, the destination server sees connections with a source IP of 172.16.25.231, which is the NAT address. Is this expected behavior, where connections between IP subnets, albeit on the same VLAN are NATed?
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Feb 14, 2013
I have five static IPs that I would like to fully utilize, by NAT'ing them to internal VLAN subnets.I read that the RV180 can do this, but I am having difficulty in finding a working recipe.I have assigned xxx.xxx.xxx.2 to the RV180 WAN interface.
I have created four additional VLANs 2-5 and assigned to ports 1-4 with subnet interfaces 192.168.2.254, 192.168.3.254, 192.168.4.254. and 192.168.5.254,I have set the default VLAN to untagged on all ports. VLANs 2-5 are set to tagged for their respective port (1-4) and exclude for other ports.I have set DHCP relays to 192.168.1.202 which is my DHCP, DNS, AD services.
I read some months ago that when the first static IP address is assigned to the WAN port, that the VLAN ports will accept tagged packets on their ports and NAT them to the respective successive static IP (sounds a bit like magic to me). Regardless, I read that the RV180 can provide VLAN subnet NAT to up to 5 static IP address. I am not looking for 1 to 1 NAT, not the same. I want to perform NAT on the four additional VLANs in the similar manner that VLAN 1 (default DMZ) IPs are NAT'd to the static WAN address. As in everything outbound on 192.168.1.0 is NAT'd to xxx.xxx.xxx.2
Additionally I would like all DHCP assigned by my DHCP server which I believe is accomplished with the DHCP relay setting on all five VLAN subnets, which point to the DHCP server 192.168.1.202
Lastly, I am trying to configure VPN connectivity into my DMZ network. I have configured a few accounts, enabled for PPTP. I have configured PPTP and am issuing 192.168.1.70-80. The VPN connection seems to work great without the use of Cisco quick VPN. I can see the remote picking up the 192.168.1.71 IP address as the VPN connection is made. From the remote I can ping IP addresses on the DMZ subnet 192.168.1.X How can I configurer the Cisco RV180 PPTP server to provide the DMZ DNS ipaddresses? These addresses need to be 192.168.1.201 and 192.168.1.202
I feel I am almost there, in working out the VLAN subnet to Static NAT. I suspect it will be some routing configurations. The ISP business gateway on the WAN side that I point my router to which is owned by Verizon, is xxx.xxx.xxx.1 I have a /29 making IPs xxx.xxx.xxx.2-6 available to me.
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May 17, 2013
How can i enable Netflow for each Vlan Or interface indvidually in Cisco ASA? currently i have setup Netflow and only 2 interfaces are shwoing traffic for Netflow which are not even as my physical or Vlan interfaces . (see screen shot )
EscapeASA# sh interface ip brief
Interface IP-Address OK? Method Status Protocol
Internal-Data0/0 unassigned YES unset up up
[Code].....
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Oct 26, 2012
I have ASA 5505 with base license. I created 3rd vlan on it.it was created. but i am unable to assign IP to it. i assign ip address it takes it. But when i do sh int ip brief it does not show any ip.
Code...
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Aug 7, 2012
We need to have one connection with less internet bandwidth assigned to it than all other other connections. Basically it is a separate conection from all others, incoming just from one switch port and separate VLAN.I know this can be done on the switch by limiting the bandwidth allocated to a port,
however, is it possible to have the speed limited down, just before it goes to the internet, ie, on the ASA, rather than doing it on the switch?The firewall is an ASA 5505.
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May 4, 2011
I'm new to Cisco equipment much more familiar w/ Sonicwall w/ that said......I have a 5505 w/ Security Plus licensing
I have set up multiple VLANs as follows
VLAN 1 inside - still setup as 192.168.1.1 (will not be using this for our lan)
VLAN2 - outside
VLAN100 - LAN 10.1.1.1/24
[Code]....
If I do add all the VLANs above I understand I will probably have to make a trunk port since I only have 5 usable interfaces
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Aug 7, 2011
ASA 5505 and DMZ and Base License,"For example, you have one VLAN assigned to the outside for Internet access, one VLAN assigned to an inside business network, and a third VLAN assigned to your home network. The home network does not need to access the business network, so you can use the no forward interface command on the home VLAN; the business network can access the home network, but the home network cannot access the business network." Page 6-17.
This is exactly what I need. Mail server in DMZ, full access from internet to DMZ, and from inside network to DMZ, no access from DZM to inside network. If I good understand, this is possible with base license.
I successfully configure, internet Access for DZM and inside network, Mail server can be accessed from internet, as well as RDP on inside network. But I have problem to configure communication from inside network to DMZ. [code]
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Jun 19, 2011
my local site has Cisco 2811 router connecting locally to ASA 5520. Remote site A has Draytek Vigor2950. I have working vpn between local subnet 10.0.0.0/24 and remote site A 10.100.6.0/24. I have remote sites B (10.100.7.0/24) and C (10.100.8.0/24). I would like to route traffic from local site to remote sites B and C via the local-to-remote A vpn. On Draytek routers B and C, I have added to subnet 10.0.0.0/24 to the remote network profile list. On local router, I route traffic for subnets 10.100.7.x and 10.100.8.x to the ASA. On ASA I have added these subnets to the profile for local-to-remoteA vpn.But the vpn will not establish when I attempt to ping from local to remote B or C.
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May 17, 2011
I need to move the client machines off of the 3750 (and their DHCP dependency on it) to the SGE2010 and absolutely route their internet traffic out through the outside interface on the 5505. They must also be able to communicate back into the internal environment in order to communicate with the production servers.
The clients currently use .254 addressing through a dumb dell switch to the 3750 but I am trying to migrate them over slowly to the .253. I know that the 2010 will not do DHCP, so I am putting a DHCP server on that switch right now. The 5505 won't let me add an additional nameif statement onto one of the other eth0/x interfaces and I'm not sure if that has anything to do with it's capabilities to act as a DHCP server (it's not an option in the ASDM) or it's ability to serve as the internet gateway for the 2010 clients. (Side notes: The 5505 has a base license and is currently also connecting 1 site to site VPN. As is the 5520, so all of it's interfaces are used as well).
I statically assigned a moved client with a .253 address and plugged it into the 2010. I have tried giving the 2010 both a .4 address and a .253 address but neither will allow me to ping any of the addresses on the 5505. The 2010 shows automatic routes to the two subnets and I set it's default route to 253.1. The link between the 2010 and the 3750 works - clients receive a .254 address from the 3750 and can get out to the internet via the 5505 and reach the production servers as well.
Why won't the 2010 see the 5505 as a gateway and allow clients to get to the internet and also traverse the 3750 when they need access to the production network?
The reason why I dont' just connect the two swtiches and call it a day is because I also need the production servers to ALWAYS go out/receive web requests via the 5520 outbound/outside interface. I'm having such a hard time wrapping my head around why i can't get my clients moved over to the new switch, I haven't even grasped how I'm going to do that yet.
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Jun 8, 2011
I've got an ASA 5505 running 6.3 I've connected the management interface to our management vlan (which contains switch IPs, ilo's etc)Is there a way to allow access to this vlan from another?
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Jun 29, 2012
I have a Cisco 2901 with the 4port gigabit ethernet switch module that I'm trying to get configured to have a seperate subnet for each port. So far I have it set up so each subnet is a vlan, then on each port I use the switchport access vlan command to tell it which subnet I want that port to be on. However, there is one port that I need to have 2 subnets on. The way I found to do that was to use switchport trunking on that port, but it doesn't seem to be working properly. how they would configure this? Right now I have vlan 101 as x.x.x.17/28 and vlan 103 as x.x.x.53/30. I think where I'm getting hung up is the proper association between the physical port and the vlan subnets.
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