Cisco Firewall :: ASA5510 - Same Security Level VLan Routing?
Jun 25, 2011
I'm facing a problem with two vlans. Each vlan has internet access by NAT.
In each vlan there is at least one server, who should be accessible from the other vlan and vice versa.
The function "same-security-traffic permit inter-interface" doesn't work, because NAT control is in place - so an expert.
Some experts told me it's not possible to route back out the same interface, and also not route back out the seperate subinterfaces as well.
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Nov 10, 2011
On a Cisco ASA 5520. I have 2 interfaces that are the same security level. I need hosts on 1 of these interfaces to be able to get to a specific IP and port on the other but I DON'T want to blanket enable 'same-security-traffic permit inter-interface" I have added an ACL inbound on the interface allowing the desired traffic and inbound on the other for return traffic and it simply doesn't work.
interface GigabitEthernet0/3.175
vlan 175
nameif Test175
security-level 30
ip address 172.30.175.1 255.255.255.0
[code]....
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Mar 27, 2013
I have issue with traffic passing between same security level interfaces. I want to control traffic between same security level interfaces with ACL. Even no restriction, traffic does not go through. [code]
I tried to access server from THREE network to web server at FOUR network I have no response. In sh xlate output it shows "PAT Global 10.124.104.254 (28889) Local 10.124.103.1(2922) " I am not sure what else should I do. I add both same-security-level commands and it is the same.
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Nov 16, 2012
I'm trying to implement some best practices for ASA running on Software Release 8.2 and had a question about the default security-level behavior. Let's say I have 3 interfaces...
-inside (security-level 100)
-dmz (security-level 50)
-outside (security-level 0)
I have an ACL on the inside interface allowing http access to anywhere. Because of the ACL, the implicit higher to lower security level access is nullified. Correct?
I do NOT have any ACL on the dmz interface applied. So, would the servers in the dmz be allowed outbound access to the Internet due to the default higher to lower security level behavior?
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Jul 14, 2012
I have ASA 5585 with SSP20. I want to enable same security level subinterfaces (routed mode) to communicate with each other.
I have put below command at global level but somehow it is not happening.
hostname(config)# same-security-traffic permit inter-interface
Do I also need to check for NATing or some other things apart from above command?
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Jan 23, 2012
Verifying the operation of the ASA when configured with Global access rules. Does the global rule overide the interface security levels? According to the ASA order of operations, the interface specific rule get's processed first and then the global rules, but It does not say anything about interface security levels. Observing an ASA in production that has global rules configured I see that an interface with a security level of 50 that has no rules applied to it, passing traffic to the outside interface (security level 0) drops the traffic. Syslog shows that it hits the global access rule implicit deny. Does the implicit permit any to any less secure interface not apply?
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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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Aug 14, 2012
We want to have a ASA5510 with both IPS function and Content Security feature, while I checked on Cisco website, looks like ASA5510 or 5520 only have one SSM slot, so I can only use either AIP module or CSC module, does it mean I can not get both features at the same time.
Right now I want to have IPS function and anti-spam, anti-virus, antiphishing, content filtering, URL blocking such feature, so what do I need to buy to have all of these function in one device?
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Dec 21, 2011
Recently upgraded a 5510 to Anyconnect Essentials and Anyconnect Mobile, the device was Security Plus and is now Base. Is it supposed to work this way? I lost my Gigabit interfaces. Is it possible to have Security Plus + Anyconnect Essentials?
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Oct 29, 2012
I have a ASA 5510 and planning to implement multiple context in a 2 tier security level and vrf-lite. meaning I have 2xASA facing the internet and below that a 2x3560 switch for our extranet and below that is another 2xASA for intranet. See diagram below. In this kind of network I want to know how it would impact the total throughput and resources of the ASA using multiple context?
INTERNET
| |
| |
2811A 2811B
| |
| | (OUTSIDE)
ASA_A-------ASA_B
| | (INSIDE)
| |
3560A---------3560B
| |
| | (INSIDE)
ASA_C--------ASA_D
| |
| | (OUTSIDE)
3560C----------3560B
| |
INTERNAL NETWORK
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Mar 20, 2011
I m getting mention error when try to open subjected web link.
Deny TCP (no connection) from Outside:180.87.10.44/2443 (180.87.10.44/2443) to DMZ-1:a.b.c.d/1594 (w.x.y.z/17964) with follow explanations.
"The adaptive security appliance discarded a TCP packet that has no associated connection in the adaptive security appliance connection table. The adaptive security appliance looks for a SYN flag in the packet, which indicates a request to establish a new connection. If the SYN flag is not set, and there is not an existing connection, the adaptive security appliance discards the packet."
Where, a.b.c.d = our private ip address (Natted) w.x.y.z = Public Ip address.
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Sep 27, 2012
I have an ASA5510-BUN-K9 in this version:
###
Cisco Adaptive Security Appliance Software Version 8.0(3)6
Device Manager Version 6.0(2)
Compiled on Thu 17-Jan-08 17:42 by builders
System image file is "disk0:/asa803-6-k8.bin"
Hardware: ASA5510, 202 MB RAM, CPU Pentium 4 Celeron 1600 MHz
Internal ATA Compact Flash, 256MB
BIOS Flash M50FW080 @ 0xffe00000, 1024KB
###
The question is what i need to add the CSC10 SSM with content filtering and url filtering to this version of ASA? Do I need more ram? Do I need more flash? Is this version compatible with the CSCSSM hardware? What licenses i need for 100 users?
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Apr 30, 2012
Is it possivble to have 10 security licenses, license to a Cisco 5510 and have them transfeered to a Cisco5520?
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Jun 27, 2011
I have ASA 5505 that has two inside security level 100 interfaces and an outside interface.On the inside interface we have corporate domain subnet with DC and 30 hosts. On the inside2 interface I have few servers that runs specific application important for our business needs, and dumb terminals that are connected to them.I have a laptop user that periodically needs access from our corporate vlan1 to one of the servers on inside 2 vlan via remote desktop or some other remote viewer client,so he can view reports etc.I have enabled same-security-traffic intra-interface command and added nat exempt command pointing specific laptop host machine to that specific server.
Now my main concern is regarding security. This user carries his laptop home, browses the web, puts USB memory, and you can imagine how this machine is susceptible to all kind of malicious software. Inside2 vlan is very important and until now it has been a very secure environment.This is no longer the case since all traffic between this inside sec level 100 vlan host and corresponding inside2 sec level 100 server is now allowed because of the enabled same level interface traffic and nat exemption rule. Do I have another solution that would allow communication based on just a tcp port number for this host? Something like port forwarding from outside to inside Vlan interface?
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Sep 21, 2012
I have 2 dmz interfaces(dmz1 and dmz2) with security level 50. I am able to ping the hosts on dmz2 from dmz1. I am running a service on a dmz2 host on port 82 but i am not able to access that service from dmz1. Also, i have an inside interface at security lever 99 which is able to access that service.
Also, i have defined the following command to allow same security level communication.
same-security-traffic permit inter-interface
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Feb 3, 2011
We have an ASA5520 firewall, IOS 8.0(4), running in routed mode with an operational Cisco 2821 router to ASA-5520 L2L IPsec VPN.:All Internet searches explain how to enable a L2L IPsec VPN from the LOWER security-level interface to a HIGHER security-level interface- and this is how our setup is configured and it is operational and working fine.:We now have a need to setup another L2L IPsec VPN tunnel on the same firewall BUT this time traffic will be arriving on the HIGHER security-level interface destination is to a LOWER security-level interface.:Is it possible to enable a L2L IPsec VPN tunnel between a HIGHER security-level interface to a LOWER security-level interface?
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Jan 28, 2013
Quote from the RV180 manual; 'By default, all access from the insecure WAN side is blocked from accessing the secure LAN, except in response to requests from the LAN or DMZ.'
Does this mean a general access-rule for the firewall blocking all inbound (WAN --> LAN) data is not required?
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Sep 21, 2011
We have an ADSM (version 5.2(3) ) . In ASA ( version 7.2(3)) we are working with routing, access restriction and configuring IPSEC vpn with integration to our AD. We need to get two diferent profiles: one for networking administrators, who are going to manage routing, acls and have the root for ASA, and the other profile is going to be for the vpn administrators. As I read from the ASDM 6.0 user guide is posible define command privilege level. So do you consider posible to define a particular level for all the command related with ipsec vpn (Create, Modify and Delete) and asociate that particular level with the user for vpn administration.
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Apr 15, 2013
I am trying to configure site to site vpn between Cisco ASA and Cisco router 3825, I need to establish the vpn connection with an interface that has security level of 90.I followed the procedure shown in the following link: URL.
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Feb 17, 2013
I have been monitoring the alarm summary but have been off couple days and i see one of my controllers is down. Getting critical level security and message is port is down on the controller, condition link down. The other issue is config difference found between NCS and Contoller, I tried getting them to sync together but still getting the same message.
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May 20, 2010
For many years we've had the following vlan and port security config on our 3560s: [code] This has worked great on 12.2(37)SE1, 12.2(40)SE and 12.2(46)SE. However since 12.2(50)SE, and I've tried all the versions since then, we have a problem with 7900 phones and ATA186s taking upwards of 20 minutes before they can get a valid IP number.The problem on the newer IOSes seems to be related to the inactivity aging.On the older IOS versions the mac address of the voice device appears on the voice vlan straight away.
On the newer IOS versions the mac address of the voice device appears on the DATA vlan and seems to be stuck there until the inactivity aging removes it. It then gets re-learned, sometimes on the voice vlan, and sometimes on the data vlan. If you're unlucky and it gets re-learned on the data vlan you've got to wait until the inactivity time ages the address out again. Repeat until the mac address eventually gets learned on the voice vlan. I don't want to be stuck on 12.2(46)SE forever.
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Dec 17, 2012
Is it possible to cisco 1941 security bundle router Support minimum of 2k of VLANs ID and shall support upto 60 vlans?
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Mar 17, 2013
There is a PIX 506E and ASA5510, with different connection to service provider. Problem is Apple remote users can't access resources protected by the PIX506E. Apple users can access resources protected by ASA5510. Physically the PIX and ASA are in close proximity with no physical connections. Is it possible for Apple users to authenticate with the ASA and the traffic get routed to and get authenticated by the PIX, inorder to access resources?Due to bandwidth restrictions, a DMZ on the ASA will not be created at this time inorder to consolodate firewalls. Currently 2 x T1 is the connection between ASA and ISP; 1 T1 connects PIX to ISP.
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Jun 3, 2009
I wanted an ASA to do hairpin routing. Here is the situation. A client was running there internet through a partner's WAN. They do not have a layer3 switch/router, and the defautl gateway on there network was actually the the partner's equip. They recently purchased there own internet circuit and an ASA5510. I initially tried putting in the nat exception and permit same security interface and static route on the ASA so that traffic bound for the extranet segment would be routed back out the inside interface toward the gateway to the partner's WAN. Pings worked right away, however no applications would work: no web traffic, application traffic, anything. My only guess is that the ASA does not like this in relation to stateful traffic flow, and the fact that since the partner's gateway is on the same subnet, you end up with asymentric routing.
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Jun 14, 2012
I have two interfaces connected to two different subnet - interface 0/1 = 10.100.1.0/24 , interface0/2 = 10.100.113.0/24 as they are direct connected to the ASA i assume i dont need to add an static route but when i try to ping from one interface to the other (ping inside 10.100.113.1) i get "Routing failed to locate next hop". [code]
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Sep 2, 2012
I have just set up a Cisco ASA 5510. It basically only contains the settings provided in the startup wizard. It however does not let through traffic from the internal interface to wan 2 (wan 1 is not connected yet but traffic should also be able to go there).
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Dec 10, 2011
I have a ASA5510 with 2 internal interfaces (inside1 and inside2 same security level) configured with OSPF for dynamic routing with 2 routers to corporate subnets. I have a server in a private subnet that needs to be accessed from Internet. So static pat is used in ASA with the command
static (inside1, outside) tcp interface www 192.168.1.1 www netmask 255.255.255.255
As OSPF is in use, the subnet 192.168.1.0/24 may be reachable from interface inside2. When I tried to configure the static command for inside2,
static (inside2, outside) tcp interface www 192.168.1.1 www netmask 255.255.255.255.the error message came out "WARNING: mapped-address conflict with existing static...". Is this just a warning, or this is not possible in ASA.
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Feb 24, 2013
I got a Problem with Routing on a ASA5510.
I have ezVPN Clients connected to the ASA5510. Those Clients are assigned an IP from 192.168.236.0/24 Pool.
I have a Router of a contractor connected to a dedicated ASA Interface called IBIZA with IP Net 10.100.10.0/24 and the Router itself with the IP 10.100.10.1. Behind that Router is another private Network which I need to reach from the ezVPN Clients.
The Connection from the ezVPN Clients to the "LAN" Interface/Network on the ASA works fine, but I cannot reach either the Contractor Router (10.100.10.1) nor the Network behind that.
From the LAN Network (on the LAN Interface) I can reach both the Contractor Router and the Network behind.
When I use the Packet Tracer Tool from the ASDM it tells me that the Traffic goes through but ends on the LAN Interface. But it should end on the IBIZA Interface or am I wrong here ?
What do I need to tell the ASA to route the Traffic from the ezVPN Client to the Contractor Router and back ? I have set up the ezVPN Connection as full-tunnel so all Traffic goes through the VPN Tunnel. That shouldn´t be the Problem.
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Aug 15, 2011
I try to setup a ASA5510, but without success. Actually, I have Cisco1800(192.168.96.1/21) from my ISP connected to a Cisco 3825 (via port with IP 192.168.96.2) all is working good. Now I want to insert a asa firewall between ISP router and 3825.
For that, I tried a more simple config :
ISProuter (192.168.96.1/21) ---- ASA outside port(192.168.96.2/255.255.255.248) ASA INSIDE port (192.168.100.1/255.255.255.0) --- a pc with IP 192.168.100.2, netsmask 255.255.255.0, gateway 192.168.100.1
From my ASA, I can ping 192.168.96.1. but a "ping INSIDE 192.168.96.1" fail
from py pc, can ping 192.168.100.1, but not 192.168.96.1
Here, my ASA config :
ASA Version 7.0(8)host name cisco asa
enable password 8Ry2YjIyt7RRXU24 encrypted
password 2KFQnbNIdI.2KYOU encrypted
names dns-guard
!
interface Ethernet0/0
shutdown
no nameif
no security-level
no ip address
[code]....
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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 3, 2012
I have an ASA5510 running version 8.2(5) I am having an issue with routing/natting from an internal network to the outside interface IP on port 443 which has a nat back in to another internal address. i works externally in from a public address. i also see log messages to do with IP Spoofing
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Mar 5, 2012
I'm fine tuning some of our ASA logging config, and am having an issue with one particular syslog ID.The message is: syslog 106100: default-level informational (enabled)and the log settings are:
Syslog logging: enabled
Facility: 20
Timestamp logging: enabled
Standby logging: disabled
Debug-trace logging: disabled
[code]....
This ACE log entry is generated by explicit deny any any statements at the end of all the ACLs, e.g.access-list inside_access_in extended deny ip any any log interval 600 Based on the config, I would expect to see this being logged to the syslog server, but not to the local buffer, but am still seeing them locally in the buffer:
Feb 22 2012 10:58:20: %ASA-4-106100: access-list inside_access_in denied udp INSIDE/HOSTABC(52629) -> OUTSIDE/HOSTXXX(162) hit-cnt 5 300-second interval [0x3baecf1e, 0x0]
It also still shows these as level "warning", %ASA-4-106100, instead of the default %ASA-6-106100 I've tried removing and re-applying the config at different levels but it still reports in the buffer log as level "warning", %ASA-4-106100 This also doesnt affect every 106100 log that is generated. Most messages are generated at the correct level 6 severity but some seem to randomly log at level 4. There doesn't seem to be any pattern to this. The same access-list line can produce severity level 4 and 6 106100 messages.
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Jul 24, 2012
Since two weeks I have a problem with the VLANs who I started to configure. I hope together we find the way.I have 5 VLANS configured in a CISCO 3560G switch. In my windows server 2003 I configured DHCP scope for each VLAN.One of the requirement to connect vlans each other is to put the IP of each vlan as gateway in the clients.So, how can I do to access to internet?. The ip of my Firewall are in one of the VLAN´s.When the configuration of the LAN only had one DHCP scope the gateway was the ip of my firewall. But now i don´t know how to configure the DHCP server, or the firewall, or the switch, or all of them To get access to internet.
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