Cisco :: FWSM Communication Between Same Security Level Interfaces
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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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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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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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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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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Nov 23, 2012
tell me for the FWSM (blade on 6500 or 7600) the maximum number of virtual interfaces (VLANs)
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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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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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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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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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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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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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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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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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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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Feb 15, 2012
We have ASA 5550, I have a citirx server in the dmz which is natted statically to a public ip address for port 443. The dmz server communicate with our internal server (i.e. AD) for LDAP authentication. I have a static transparent nat from inside to dmz for the internal server's communcation with dmz.
When accessing the application from inside the network on the internal web server it works perfectly fine and authenticates with the AD.But when accessing from outside, the reach the citrix server and then the AD authentication fails, basically it works intermitantly. I have tried to check the communcation from the DMZ server to the internal server and the icmp works perfectly fine, even I am able to telnet on the ports specified on the internal servers from the DMZ servers. I tried to look into the logs on the ASA and this is something that looks suspicious to me.
Feb 16 Teardown TCP connection 47646475 for dmz1:CITRIX-DMZ1/47179 to inside:inside-server/80 duration 0:00:00 bytes 1230 TCP FINs
Feb 16Built inbound TCP connection 47646476 for dmz1:CITRIX-DMZ1/47180 (CITRIX-DMZ1/47180) to inside:inside-server/80 (inside-server/80)
Feb 16Teardown TCP connection 47646476 for dmz1:CITRIX-DMZ1/47180 to inside:inside-server/80 duration 0:00:00 bytes 3824 TCP FINs
Feb 16Built inbound TCP connection 47646477 for dmz1:CITRIX-DMZ1/47181 (CITRIX-DMZ1/47181) to inside:inside-server/80 (inside-server/80)
Feb 16 Teardown TCP connection 47646477 for dmz1:CITRIX-DMZ1/47181 to inside:inside-server/80 duration 0:00:00 bytes 1224 TCP FINs
[code]....
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Mar 9, 2007
how to configure FWSM module in cisco core switch 6500
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Mar 2, 2012
I have some doubts about the best solution for the design of a mini data center.In the data center there is a 6500 with FWSM module installed, there are some vlans created, all of them in the fwsm module. For example, a back end server to communicate with a server in the front end must always pass through the firewall. My question is, all these flows passing in the firewall does not degrade the speed of communication?What is the best practice, just pass the communications with the WAN in the firewall, and the vlan communication between front end and back end is only set up in 6500?
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Nov 7, 2012
My corporate internal network is currently fire walled by an FWSM module on a 6513 switch. We have each security zone (we have eight) assigned to a FWSM context and have ACLs set up between the contexts and the enterprise LAN/WAN. Is it possible to support fire walling between these zones within a single security context? The reason I am asking is that we would like to purchase a second FWSM for use as a standby, but do not want to cough up the ~ $12K for the context license. We will ultimately be transitioning to ASAs for internal security, so do not want to spend more than we need to.
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Apr 17, 2011
We have two multilayer switches and only one ASA 5520. I'd like to connect ASA in the way described on the picture: each redundant interface includes two physical ones, which are connected to different switches
My question is what kind of link it is necessary to have between switches to make this idea work? I'd have subinterfaces like Re1.100, Re2.200 and so on for my traffic.
I understand that correct design approach is to have two redundant firewalls with failover but we cannot purchase the second one yet.
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Jun 21, 2012
I use 3 interfaces on an ASA 5510. First interface is Lan, Second interface is Outside, Third interface is ADSL The Outside interface is used for VPN L2L and smtp traffic. (Leased line on router managed by ISP)The Adsl interface is used for Http traffic. (Adsl Cisco router) I use this configuration found on another forum subjet for routing.route outside 0.0.0.0 0.0.0.0 x.x.x.x 1route adsl 0.0.0.0 0.0.0.0 y.y.y.y 2 nat (inside) 1 0 0global (outside) 1 interfaceglobal (Adsl) 1 interface static (Adsl,inside) tcp 0.0.0.0 www 0.0.0.0 www netmask 0.0.0.0 The problem is now I have an www intranet server on the VPN remote site. How i can exempt the http traffic to the intranet server routed through Adsl interface?
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Jul 19, 2010
We'll be implementing Cisco NAC guest server for Guest Wireless users, ( Model #3310), the question is do we need to configure separate physical interface for User authentication requests( from Wireless ) and a separate Interface for Guest server to talk to AD for SSO?
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Jan 14, 2012
I am having big problems trying to get what should be a rather simple configuration to work.I have a Cisco 2901 Router and have setup Zone Based Firewall on this.Traffic from the 192.168.223.x network does not pass through to the 192.168.1.x network.my traffic appears to disappear down the big bucket...Interesting I can ping machine on 192.168.223.0/24 network from the 192.168.1.0/24,So the static routes setup on the router on the 192.168.1.0/24 appear to be routing ok.
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Dec 12, 2010
what ios for 827-4v from 12.4 can i use for IPSEC+ddns?i tested some from 12.4 but normally working only 12.3(26)GD, but i want ddns feature? some from 12.4 is working with tracebacks, other is not loading - with error (loadprog: error - program section linked to illegal address)
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Jan 18, 2012
We have a 7206VXR with an NPE-G1 processor. We're running the standard stuff on it, but here are the highlights.We just enabled netflow on it to send the data to an external source for analysis and the overall CPU level increased, but not significantly. About what should we expect for the overall CPU level? At this point, it's averaging close to 40% during peak hours.
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Jun 13, 2011
I have cisco ACS 5.2 and external identity source as RSA secure ID.Currently when the RSA user login to AAA Network devices, User id & passcode prompt coming after giving the credential its going to user exec mode.Then after "enable" command again asking for Passcode giving passcode then user able to logged in successfully.
I need RSA users to get direct privlege level15 (privlege mode) ? no need to ask enable password ?
I checked this for local ACS users it is working and loca users getting directly privelege mode access...
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Feb 11, 2013
I am on the lookout for free dynamic DNS for top level domain name.There seem to be quite a few free dynamic DNS providers for third level domain but I am having trouble finding one for top level domain. I am almost on the verge of actually mapping the top level domain to a CNAME of a third level domain with dynamic DNS but I really don't want to do that.
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Oct 31, 2011
Is there any easy way to tell what networking level my laptop is capable of? Its an older IBM, T30.Wireless works fine but I'm thinking of upgrading the router and want to make sure the laptop will connect using the faster N network speed.
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Feb 15, 2013
We have more than 50 devices handling by PI 1.2 (testing) I like to know how to do configuration archiving with user who doesn't have write privilege.
I tried like this.
username john privilege 6 password cisco privilege exec level 6 show running-config
(result) show run --> blank
I tried this user with one of switch in PI 1.2. It did not do configuration backup
username inout password inout username inout privilege 15 autocommand show running-config
(result) once logged in, it automatically showed running-config. However when I tried with PI 1.2 with this user (inout). I couldn't do configuration back.
reference [URL]
create certain user with read-only privilege while PI 1.2 is able to do configuration archiving ?
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Dec 8, 2012
In the bottom screenshot how to determine the coverage level, I couldn't find any explicit documentation on that .
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