Cisco Firewall :: 1841 / How To Deploy ISO Firewall Feature

Feb 13, 2012

What is the best way to deploy the IOS firewall feature?I have a Cisco 1841 router running 12.4. 

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Cisco Firewall :: IOS Zone Based Firewall Websense URL Filtering Feature On 881G

Jul 27, 2011

I've been trying to configured Websense urlfiltering using ZFW feature on my Cisco 881G router. The router is running on IOS 15.0(1)M with Advanced IP Services. And I have confirmed it supports urlfilter feature.
This is what I tried to accomplish but IOS version 15.0x seems to have different command set.
class-map type inspect httptraffic
match protocol http
parameter-map type urlfilter param
server vendor websense

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Cisco Firewall :: 1841 / IOS Firewall Keeps Stopping Mobile Apps?

Nov 11, 2012

The other day I set up a firewall on my Cisco 1841 router, it all seems to work fine except for a few small problems.  2 wireless devices an iPhone and an Android tablet are having some problems with 1 or 2 apps.  iPhone 6.0.1 Facebook app and the App store will not load Android tablet ICS BBC iPlayer and Google play app store wont load or play content.  Both devices with their issue were working fine until the new firewall was installed.  I’ve tried opening ports and adding ACLs but nothing seems to work.  I’ve included my start up config.  All other PCs, laptops, smartphones and iPads work fine. 
Building configuration... 
Current configuration : 5551 bytes
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption


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Cisco Firewall :: 1841 - Which IOS Support Zone Based Firewall

Jan 3, 2013

I have a cisco 1841 router  , and i want to configure zone based firewall on it. But the document of zone based firewall only said that "after 12.4(6)T" can support zone based firewall. I use the ios  " c1841-ipbasek9-mz.124-15.T9.bin ", but it can't support ZFW. What kind of ios support ZFW. for example: ipbase, ent base, ip service ,advent etc.

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Cisco Firewall :: To Deploy ASA5585 In Between User Vlans And Server Vlans

Jun 1, 2012

WE have to deploy ASA5585 in between User vlans & server vlans. we have to find all the ports that needs to be opened on firewall. any tools to do same.

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Cisco Firewall :: NAT-Control Feature In ASA 8.4 (2)?

Aug 26, 2011

I'm a bit confused about new NAT functionality in Ver 8.4(2). I've gone through all the documentation as well as different blogs but still not clear about the various things.One of these is NAT-CONTROL. I understand that this has now been removed. Does this means that traffic traversing the ASA doesn't need any NAT'ing commands unless specifically required by the administrator? In other words by default traffic is allowed through the firewall without any NAT'ing.
My Second Query
I've ASA5520 running ver 8.4(2). For inside interface, I've created 13 x sub-interfaces under Gi0/1. All have same security level i.e. 100. What I want to achieve is that:Traffic from these sub-interfaces should be NATTed to outside interface when going to internetBut, intra sub-interface traffic should be allowed without NAT'ing. I'm using RFC1918 on both sides i.e. source / destination The first point is not a problem it's working, however. I'm struggling with the second point. On ver 8.2, it wasn't a problem, I used NAT 0 with access-list permitting RFC1918 addresses as source and destination.

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Cisco Firewall :: Name Feature On ASA5550 8.4

Feb 16, 2012

I have upgraded ASA5550 version from 7.2(4) to 8.4(2).
On version 7, I am used to "names" command, like this:

name Picard
name Administrativa

By addition, when configuring acls it was very usefull, for example: 

access-list inside_access_out line 15 extended permit udp host Picard host eq snmp 

On version 8, I have verified that names replacement is no more available: 

ASA(config)# access-list outside_access_in permit ip host ?

configure mode commands/options:

A.B.C.D  Source host IP address

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Cisco Firewall :: Active IPS Feature In ASA5500-X?

May 5, 2013

Should we active IPS feature in ASA 5500-x by useing license?in the 5500-x ordering guide:IPS is only sold as ASA-IPS combo SKUs i.e., one cannot add IPS service as an option on top of ASA SKU. For example, if IPS service is desired on ASA 5515-X appliance, the relevant SKU is ASA5515-IPS-K8 or ASA5515-IPS-K9.But my customer has actived it by using the ASA5525-IPS-SSP on ASA5525-K9.

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Cisco Firewall :: ASA 5520 Dual ISP Feature

May 31, 2013

I would like to knwo if i have dual ISP feature with my ASA 5520 licence? With ASA 5505 i can see Dual ISP feature but with ASA 5520 it's not!

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Cisco Firewall :: ASA5505 Use Web Filtering Feature

Nov 16, 2011

i am going to implement a ASA5505 in one of my offices. I would like to use web filtering feature on it. Will it cause any performance degradation in ASA? will it utilized more memory?

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Cisco Firewall :: ASA5520 8.0(2) Does Not Have Traffic Shape Feature

Dec 21, 2011

Recently I want to apply traffic shape on my ASA5520, but after entering the configure mode of policy-map, I couldnot find the shape command.. If I type the command, the device would notify me that there is no such command..  My version is 8.0(2),PS. Police command is working fine...

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Cisco WAN :: 1841 / Router ISP Failover Feature - IP SLA

Feb 13, 2012

I got a simple office: one flat LAN, one single 1841 router and 2 ISPs.LAN is and is connected to a port on an HWIC card I installed in the 1841. Then FA0/0 connects to ISP1 and FA0/1 connects to ISP2.
Everything is fine except that I am having some issues with the Failover feature. Currently, I am using Object Tracking with SLAs. I am pinging 2 hosts located on the internet and then I have an SLA OR statement which basically say if ANY of the 2 objects are unreachable, DO NOT trigger a failover to ISP2. If in the case that BOTH objects become unreachable, then DO trigger a failover. It works like a charm.
The problems:Any internet hiccup obviously makes the router activate the tracks and redirects all traffic to ISP2. However, 99% of the time ISP1 is back online within minutes or seconds, so after 180 seconds the traffic gets redirected back to ISP1. So in essence, the customer suffers 2 interruptions.
Besides internet hiccups, I have also noticed that every time any user tries to copy a big file accross the tunnel (the 1841 has site to site tunnels with 2 branches) the tracks go crazy and the objects become unreachable so a failover is triggered. We were breaking our heads and fighting with the ISP1 provider because every time this happened, we called them but every time they kept telling us that their line was UP and running without any problems. So after careful investigation, I do admit they were right.... it is not so much that the ISP1 experiences hiccups, it is actually the fact that users putting heavy load into the router are causing it to have its track to stop reaching the objects.

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Cisco WAN :: Moving From Pix 515e To 2951 Router With Firewall Feature Set

Dec 29, 2011

Me to a 2951 router with fireawall featureset. Ive begun to move the ACLs that where in the pix. However some of the rules are allowed to be typed in bur when i look at the ACL afterwards they are not what i typed in.

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Cisco Firewall :: ASA 5510 Does The Feature Content Filter Comes As Built In

Nov 11, 2011

In Cisco ASA Firewall 5510 does the feature content filter come built in?

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Cisco Routers :: RV220W - Feature Request - IPv6 Firewall?

Jan 19, 2012

At this moment (firmware the router has no IPv6 firewall and therefore when used in a typical dual stack IPv4/IPv6 network it has no protection regarding IPv6 traffic. Hopefully this will be fixed with a firmware update before the World IPv6 Day on the 6th of June 2012.

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Cisco Firewall :: ASA 5510 - Does Feature Content Filter Come Built In

Jun 26, 2012

In Cisco ASA Firewall 5510 does the feature content filter come built in?

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Cisco WAN :: ASR1001 - License For Advipservices Or Adventerprise To Activate Firewall Feature Set?

Oct 9, 2011

I have an ASR1001 installed and I want to implement the firewall feature set.The current license level is IPbase and I have the firewall feature installed. The firewall feature shows acive, Not in use. I have tried to activate it without success.  My question is: do I need to get a license for advipservices or adventerprise to activate the firewall feature set?

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Cisco Firewall :: Use ASA 5510 Smart Call Home Feature For Automatic Backup Creation By Email

Feb 10, 2013

I am trying to use the built in feature of Cisco ASA 5510 smart call home feature with the purpose of automatic backup creation by email. I found the configuration [URL]. I already configured the said instructions but when I send a test email it says it cannot contact the email server. Below is the error that I am getting from our ASA. I am new to firewall.

OGI-MNL-ASA-FW0# call-home test profile ASA_Config_Backup
INFO: Sending test message to
ERROR: Connecting to SMTP server failed: CONNECT_FAILED(33)

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Cisco WAN :: 1841 BPR With Router And Firewall

Oct 20, 2012

In my company, we have two Internet connections, one for VPN and the other for emails and browsing. I have Cisco 1841 router with dual ADSL links, and also it's conntected to ASA and the other PIX. through one physical interface (vlan 1and vlan 2). The PIX firewall is connected to users, and the ASA is for VPN only.How can I seperate the traffic is going for emails and browsing and the vpn traffic. I have got to the point, that the router is configured for both ADSL connections, and I also configured the access-list and route-map in the router, the thing is when both ADSL configured together none of them works.

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Cisco WAN :: 1841 Connection Between ISP And Firewall

Apr 2, 2012

I have a Cisco 1841 serving as a connection between my ISP and my Firewall (non Cisco).
I seem to be having performance issues with my traffic going through the Router.HTTP (web browsing) is fine andI get my download rate as I would expect for a 10mbps connection.But anything to do with my VPNs I find a delay when sending via the 1841.(all my VPNs are managed by my Firewall and I have never had problems with those).
I also have a legacy ADSL connection to my firewall, which bypasses the 1841 and I am having no issues on that at all.If anything it is quicker! Which is madness as my Fibre should out-perform it easily.This leads me to believe the issue is not with the Firewall.
My 1841 is very simply setup, 2 fa interfaces with simply a default gateway setup within it.Which leads me to ask if I need more static routes in or a dynamic route protocol setup?

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Cisco Firewall :: 1841 NAT Out One Interface But Not Other With IOS?

Feb 27, 2012

I am trying to figure out how to use a Cisco 1841 IOS router to take traffic from one interface and source NAT it out towards the Internet on one interface and at the same time NOT perform NAT when sending the traffic towards a different routed interface. 
Here the RemoteSite has connectivity back to the MainCampus, but there is no need to NAT traffic from the one site to the other.   They share the same umbrella of address space.   However, the RemoteSite needs to have its Internet-bound traffic NAT'ed out to the Public Internet via a third interface.  I know that I could just NAT everything out from the Remote Site and map the traffic back onto the same address space for intra-campus communication, but I'd rather avoid that and just NAT where I need to NAT it to the Internet.
I do have a caveat here:   in the event that either the MainCampus or the Public Internet interfaces go down, I would like to failover traffic from the downed link to other good link.  For example, I want to NAT all traffic (including "intra-campus" traffic) out via the Public Internet if the direct link to the MainCampus is down.  For the other example, if the Public Internet direct link is down, I would just send out all traffic without NAT towards the MainCampus.

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Cisco :: Configure 1841 Router And Firewall?

Feb 11, 2013

Configuring Cisco 1841 router and firewall.My provider has put their equipment and given me 2 subnets with public ip address. I am used to getting just one Subnet and connecting my firewall straight to the hand off. But in this case I am a bit confused. I assume I will need to put a router and configure it with before I connect my firewall. [code] I also have a firewall that I would like to be on the subnet 2 at and have my private network behind it.

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Cisco Firewall :: Internet Is Not Working Behind 1841?

Apr 6, 2011

I have configured a Cisco router. I am able to ping google from rotuer. I can ping my local IP from router and router local IP to my machine. But I can not access internet on machine. I can not ping google and any other IP out of network.

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Cisco WAN :: 1841 ADSL Configuration With VPN Firewall?

Nov 27, 2011

I have a Cisco 1841 router with an HWIC-ADSL module installed. My ADSL connection is PPPoA with a dialer interface and I have been provided 6 ip's from my provider to use on this service. Previously I have connected Fa0/0 on the 1841 straight onto my network and used NAT and ACL's on the 1841, I would now like to change this and have Fa0/0 connected to a Palo Alto firewall and use the Palo Alto to provide NAT, Firewall & site to site VPN functions. What config would I require on the 1841 to allow me to use one of my ISP IP addresses on the Palo Alto to allow it to be a VPN endpoint? Do I need to configure the 1841 in bridge mode?

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Cisco Firewall :: 1841 To Hold Public IP Addresses Behind ASA

Apr 21, 2013

I am trying to figure out how this works. I have an ISP device that connects to my 1841. ISP and fa0/0 hold the /30 WAN addresses. Fa0/1 hold one of the public IPs, lets say Then the outside interface of the ASA holds Now I have two routes in the 1841, one for default route going back to the ISP device, and a route for the network going to the ASA.Now I have 4 more publics I can use - 6. I do not want to assign these IPs to the servers, but yet just NAT them. I know this is possible, but cant figureI took an internal host and did a one to one static NAT from private to public. Packet tracer says my NAT rules are ok. Allowed all IP traffic for testing and still can't ping the server.

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Cisco Firewall :: 1841 / Failover Between Leased Line And VPN

Jul 15, 2011

I am going to design one network. I had queries with this design.Let me explain scenario first( it was attached below).I have two sites, Site-A and Site-B, repectively.

In site-A i have one Cisco 1841 router, one Cisco ASA 5510 firewall and One cisco 3560 layer 3 switch.
in site-B i have one Cisco 1841 router, one Cisco ASA 5505 firewall and One Cisco 3560 layer 3 switch.

From ISP side

I have point-to-point leased line between sites A and B. And both sites have internet connectivity from another ISP.

I planned to terminate leased line in cisco 1841 router in both branches for branch to branch connectivity.

I will configure site to site VPN between two sites, A and B.

Here my query was i want make VPN as failover connectivity if leased line fails. In both the cases, i need internet to the inside users in both sides.

Summary requirement:Leased line is Primary and VPN is Back-up, if leased line fails. In both cases internet is needed to inside users.

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Cisco WAN :: 1841 Router Can't Resolve DNS After Enable IOS Firewall

May 9, 2013

my 1841 router can't resolve dns after enable ios firewall, I try to ping from router's console fail, but dns resolution is fine from lan side.
my partial config---------------------------------
ip name-server


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Cisco VPN :: 1841 / Minimum IOS Software Feature Set Required For Site-to-site VPN?

Aug 7, 2011

I'm getting a Cisco 1841 router to do a site-to-site VPN. I'd like to know what's the minimum IOS software feature set required for site-to-site VPN?

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Cisco Firewall :: 871 / 2811 / 1841 - ZBFW Default Inspection Specification

May 6, 2011

I can't find any specific information on the implementation of packet inspection in a zone based policy firewall.  In other words, is there a specification or even just a set of values that define the default inspection parameters for all protocols?  With DPI I can manage 'some' of the inspection capabilities but I have some fairly rigorous and specific requirements to meet and I need to validate that the IOS ZBFW will meet those requirements.  Specifically, I'm interested in HTTP, DNS, and ICMP but all other protocols would be useful as well.I'm working with basic routers; 871's, 2811's, 1841's, etc.  The IOS in use in most cases is adventerprisek9-mz.151-3.T.

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Cisco Firewall :: 1841 / Can't Access Public IP Of LAN2 From Host On LAN1

Dec 11, 2012

i am using a Cisco 1841 with subinterfaces instead (NAT on a stick).From the internet i can access services on public IP being hosted in LAN2. But when i try to access the same services on the same public IPs but sitting on LAN1, it does not work.

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Cisco Switching/Routing :: Setup Of Firewall In Between 1841 Router And Switch

May 26, 2013

We have a setup of a firewall in between my Cisco 1841 router and Switch.
Cisco Router --> Meraki Firewall--> Switch
Client VPN is configured on the Meraki Firewall but then for the outside users to client vpn in to the network, I have to port forward or open the ports 500 and 4500 to the IP address of the Meraki Firewall [code]

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Cisco Firewall :: 1841 - Can't Access Public IP Of LAN2 From Host On LAN1

Dec 11, 2012

i am using a Cisco 1841 with subinterfaces instead (NAT on a stick).From the internet i can access services on public IP being hosted in LAN2. But when i try to access the same services on the same public IPs but sitting on LAN1, it does not work.

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Cisco VPN :: 1841 / VPN Site-to-site With Zone Based Firewall

Jan 28, 2013

The problem I am having is very strange and I have tried to upgrade the IOS on the 1841 to solve the problem but no luck.  The issue is when I enable Zone Based firewall security on of the 1841 routers two VPN site-to-site tunnels stops working.  If I turn off CEF (no ip cef) then the traffic for both tunnels works.  Someone told me that the Zone Based firewall must have a match for the VPN traffic and I created that with ACL 160 and 161 but it did not solve the problem.
Current IOS is below.
Cisco IOS Software, 1841 Software (C1841-ADVSECURITYK9-M), Version 15.0(1)M9, RELEASE SOFTWARE (fc1)
Technical Support: [URL]
Copyright (c) 1986-2012 by Cisco Systems, Inc.
Compiled Tue 11-Sep-12 23:58 by prod_rel_team


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