Cisco Firewall :: VLAN Traffic On ASA 5505?
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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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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Jan 11, 2013
I have a customer, who has the SVI's configured on the Core (4500x) and this is connected to a ASA 5525x, there is a requirement of restricting traffic between different vlans. How can i use the ASA to accomplish this task. ACLs on the Switch are not stateful and hence not considering this option, Also we are not planning to configure the GW's on the ASA since there is lot of traffic between the vlan's and this will become a bottleneck
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Dec 5, 2012
I am able to ftp from my Head Office to my test machine at the remote location but I can't get the other way around to work. Error message from the Syslog deny tcp src 192.168.50.5/1825 dst 208.124.202.44/21 by access-group "dmz_access_in".I try a couple of ways to fix it but no luck.A partial config of my ASA 5505. [code]
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Jul 24, 2011
We have a BT Infinity broadband circuit which terminates at a vdsl modem, I've plugged an ASA 5505 into the back of this modem and gone through the ADSM quick setup wizard (yes I'm that much of a beginner!) The config that's been generated is pasted below, the symptomns I'm seeing are;
The ASA is setup with PPPOE on the internet connection, I assume this is correct as if I do a show IP on the ASA I'm getting an IP address that has been assigned, if I change the password to the wrong one then I get no IP (as expected).
If I ping from the ASA to an internet connection I'm getting "no route" error messages, if I try a "ping outside x.x.x.x" then I get no repsonses.
The ASA can ping it's external IP, the client machines can ping it's internal, however nothing appears to be able to get out.
ASA Version 8.4(1)
!
hostname xxxxxx
enable password xxxxxx encrypted
[Code].....
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Mar 10, 2013
We have a small cisco 1800 series workgroup router that seperates our network from the outside world. The data coming into our network goes into the router on interface fa0/1 and comes out on interface fa0/0. fa0/0 is split into 2 sub-interfaces (fa0/0.2 and 0/0.3). These sub-interfaces correspond to a desktop and server vlan on our network. The workgroup router is connected to a 3560G trunk port (we'll call it switch 1) and switch 1 connects to another 3560G (we'll call it switch 2). Recently I was asked to add another layer of security to our network by installing an ASA 5510 firewall and forcing certain types of traffic to authenticate using their domain credentials for our network. The firewall was set up between the router and switch 1 in transparent, multi-context mode. There are 2 security contexts, 1 for the desktop vlan and 1 for the server. Both have the same security settings applied to them since we want the same behavior regardless of whether they are trying to access the servers or the workstations.
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Nov 11, 2011
I have FWSM v4.0 installed on Cisco 7609 router and when I want to configure FWSM services on it, VLAN traffic is not passing through the FWSM or not Reaching upto fwsm
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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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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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Apr 11, 2012
We have 110mbps internet service. When we have the 5505 behind the cable modem, our speed drops to 55mbps or so. If we remove the 5505, we see the full 100mbps. I assume the 5505 can handle the speed; if so, what other things should I be looking at?As an aside, we used to have 50mbps wich worked fine, then the ISP upgraded to 60mbps and the through put dropped to 30mbps (It always seems to be half)
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Jun 25, 2012
My understanding is for insight to outside we need global and NAT, and for outside to inside we need static and ACL? Traffic goes to high to low, I'm just start working with 5505 recently.
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Oct 27, 2011
I have VPN up and running between two sites. Both sites have Cisco ASA 5505. I can ping across the devices from both networks. But I cannot remote into the servers on the other network.
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May 24, 2011
I'm trying to allow SSH traffic from the Internet to my DMZ. I gave my remote guy my ip and he can see the ASA 5505 but not get into the DMZ. The outside is 70.165.19.137. The DMZ server is 192.168.60.2. I have the inside talking to the DMZ fine. [code]
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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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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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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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Jun 13, 2012
I am fairly new to configuring ASA's. I have an ASA 5505 with one outside interface and three inside interfaces (inside1, inside2, and management). I need inside1 and inside2 to be able to talk to eachother but cannot work out how to make this happen. They are both configured to the same security level and the 'Enable traffic between interfaces with same security level' box is ticked. I have also tried adding appropriate NAT and Access rules. The packet tracer suggests the rules are correct for allowing traffic flow between interfaces but obviosly this may not be the case.
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Jun 4, 2013
We have 10MB dedicated Internet BW and want to run VC device and due to heavy traffic and BW high utilization at peak hours, VC performance is not sufficient. We would like to reserve 2MB for VC device. How much possible to fix up this configuration in ASA5505 version disk0:/asa724-k8.bin [URL]
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Jul 31, 2012
I have a Cisco 5505 with a 12Mbps feed. I want to reserve 2Mbps for RTP traffic. I followed the QoS guide here: url... The goal would be that any traffic destined for port 5000 through 5100 UDP or TCP from any IP to any IP on any interface.should always have 2Mbps available to it.
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Oct 19, 2011
Is there any difference with traffic shaping capability on the 5510 as opposed to the 5505? is there anything the 5510 can do that the 5505 cant? with regards to TShaping?
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Mar 15, 2012
I am trying to switch out a cisco pix 501 firewall with a cisco ASA 5505 firewall. I am not very familiar with all of the commands for the firewalls and have always relied on a standard command line script that I use when building a new one. Unfortunately, my script is not working with the 5505. What I am doing wrong with the following script? I've masked public IP info with xxx.xxx.xxx and I run it right after restoring the firewall to the factory defaults. I am able to get out to the internet if I browse directly from one of the servers, but cannot access a web page when trying to browse to it from an outside network. [code]
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Oct 23, 2011
I've setup my Cisco ASA 5505 in transparent mode. I have a Cisco 1841 connecting to the ISP (DHCP client) and F0/0 for inside. The 1841 is the DHCP server. I have my ASA 5505 behind the 1841 in transparent mode (Vlan 1 for Outside and Vlan 1 for inside). The router config is good as when you connect a computer straight to the inside interface I get DHCP and can go to internet, no problems what so ever. But When you're trying to go through ASA isn't not working. if I add a ip any any statement to the access list it will work but having an "ip any any" in a access list is like having no firewall at all.
ciscoasa(config)# sh run
: Saved
:
ASA Version 8.2(4)
!
firewall transparent
hostname ciscoasa
enable password zmQ6OnxvsOOEDNAy encrypted
[code]....
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Aug 20, 2012
I've got an ASA 5505 with the Security Plus license that I'm trying to configure.
So far I have setup NATing on two VLANs, one called 16jda (VLAN 16 - 10.16.2.0/24) and one called 16jdc (VLAN 11 - 10.105.11.0/24).
From each subnet I am able to connect to the internet, but I need these subnets to also be able to talk to each other.
I have each VLAN interface at security level 100 and enabled "same-security-traffic permit inter-interface", and I have setup static NAT mappings between the two subnets, but they still can't communicate.
When I try to ping there is no reply and the only log message is: 6 Aug 21 2012 09:00:54 302020 10.16.2.10 23336 10.105.11.6 0 Built inbound ICMP connection for faddr 10.16.2.10/23336 gaddr 10.105.11.6/0 laddr 10.105.11.6/0
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Nov 9, 2011
I trying to allow traffic between 2 inside interfaces with the same security level. VLAN1 and VLAN15. The are on different physical ports on the ASA. I tried to configure this through the GUI Web interface and checked ' enable traffic between two or more interfaces with the same security levels'. With this ASA version, I do not need NAT to allow this, correct?
ASA Version 8.2(1)
!
hostname ciscoasa
[Code].....
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May 20, 2011
I have ASA 5505 with base license. I like to install proxy server in my network.I configured below commands to forward my traffic to proxy server from my ASA.
If there is any configuration that i need to configure.And if possible send me the configuration guide to setup SQUID server. ( Actually it was set up by the 3rd party vendor)
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Mar 14, 2012
I am currently troubleshooting a firewall policy on a ASA 5505. What command can enter in the CLI to enable live view of traffic been block and which traffic is been allow?In my experiences with other firewall vendors, other firewalls allow me to narrow down the source and destination, too. is there such thing on the ASA 5505?
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May 30, 2011
I have ASA 5505 Firewall with security plus license, I configured two V LAN 1 and V LAN 5 as my inside V LAN for different sub net, i need to route the traffic between this two V LAN's through ASA. I configured
int vlan 1
nameif inside
Security level 100
Ip address 172.16.100.1 255.255.255.0
[Code] .........
The problem is i am not able to ping other sub net, for ex my PC is in V LAN 1 not able to ping 192.168.22.1 ... For troubleshoot i type debug icmp trace while pinging other subnet
ICMP echo request from 192.168.22.2 to 172.16.100.101 ID=512 seq=4608 len=32ICMP echo request from 192.168.22.2 to 172.16.100.101 ID=512 seq=4864 len=32ICMP echo request from 192.168.22.2 to 172.16.100.101 ID=512 seq=5120 len=32ICMP echo request from 192.168.22.2 to 172.16.100.101 ID=512 seq=5376 len=32
I turn off the firewall on my local machine.
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Jul 18, 2011
I need to prioritize voice traffic through the ASA
priority-queue outside
tx-ring-limit 200
queue-limit 2000
Do the above values look correct? and why is the priority queue applied to the outside interface and not the inside? (or both). Also is this the part that ensures that the regular traffic does not choke the voice traffic?
class-map voip-class
match dscp ef
policy-map outsidemap
class voip-class
priority
service-policy outsidemap interface outside
Will the global policy remain which this interface policy taking priority?
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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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