Cisco Routers :: SR520 Not Criterion In Zone-based Policy Firewall Class-maps

Jan 16, 2012

I'm trying to configure a zone-based firewall on an SR520 and am confused about the 'not' criterion. The 'zone-design-guide' says (my stress): Class- maps define the traffic that the firewall selects for policy application. Layer 4 class-maps sort the traffic based on these criteria listed here. These criteria are specified using the match.where my intention is to let only LAN hosts with IPs in the range 192.168.1.1 to 192.168.1.7 out through the firewall. There may be an easier way of doing this which I'd be pleased to hear about. But, even if there is, I'd also be interested to know what I'm doing wrong in the above.

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Cisco Firewall :: SR520 ADSL Router - How To Add / Edit Class Maps Rules

Mar 26, 2013

I got myself lately Cisco SR520 router with some basic firewall functions built in. This is going to be used for my home broadband, so no need to be really super secure, as it would be for some business. I managed to configure it, however there are few things on the firewall side, which I don't understand.

This router had some default configuration in it's flash, when I bought it. There are class maps.... how it works or how to add/edit rules. Also, do I need to use class maps, or can they be replaced by ACL's to certain extend? How to add/edit class maps rules to allow certain port (eg. 3333). Pease see below part of the default config:

class-map type inspect match-any SDM-Voice-permit
match protocol sip
class-map type inspect match-any sdm-cls-icmp-access
match protocol icmp
match protocol tcp
[Code]...

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Cisco WAN :: ASR1002 - Show Policy Map Interface With Nested Class-Maps

Jul 18, 2011

I have a requirement to provide stats on a per-department, per-destination basis between sites. If I take Voice as an example I have 5 child classes referring to the 5 departments each matching EF and a particular access-list that matches the department's subnet. I tie these 5 child classes into a parent Voice class-map.
 
Now when I issue a "show policy-map interface" command I see stats for the parent class-map only whereas I would expect to see a breakdown for each of the child classes which is what is required.
 
I am doing this on an ASR1002 running 3.2.2.

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Cisco Firewall :: 1811 / Zone-Based Policy Firewall Configuration

May 16, 2011

I have two 1811's connected in a lab using a ipsec vpn tunnel (using a switch to simulate an internet connection between them).I am trying to configure one of the routers as a ZBPF just to allow a remote windows login (DC on the firewalled side, workstations on the other side).I'm trying to verify that the zbpf is working, but it doesn't seem to stop anything.  I had match icmp added to the class-map, but took it out to test if icmp would fail.  It didn't.  Basically, I don't think the firewall is working at all.  Any thoughts on how I can configure this so that the policies will work between zone-pairs?

Here's an quick drawing:

Here are the configurations:

 Local router:
 hostname sdc-1811-LocalLab
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
resource policy

[code]....

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Cisco Firewall :: 2911 - Control Link In Zone-Based Policy High Availability

Jun 26, 2012

I have set up a zone-based policy firewall with HA on two 2911 routers as per the Cisco security configuration guide, for an active/passive LAN-LAN cluster. All works as expected, but there is one problem I find: when the control link between the two devices fails, they go into an active/active state as each member assumes it's the last surviving member. The ARP entries for the Virtual IPs on the neighboring devices point to the device that last claimed the active role (usually the standby device). This works in a way, just sessions don't get synched anymore (control link is the same as data link). Now when the link comes back up, the preemtion works and the active, former standby device goes back to standby. But the ARP entries on the neighboring devices still point to the standby device and nothing goes (also sessions established during the active/active state are lost due to resync with the now active member).
 
This is a single point of failure and what I need is a way to mitigate that. Under:

redundancy
application redundancy
group 1
control <interface> protocol 1

only one control interface is allowed. Other manufacturers with similar functionality provide for the possibilty of a backup control link, for example the internal LAN interface or a dedicated backup link.
 
How would I go about that? Maybe use a port-channel for the control/data link (but I'm out of interfaces)?

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Cisco Application :: ACE 4710 Class Maps - IF And OR Logic

Aug 21, 2012

I'm currently looking at doing some re-design work for a platform we manage on the ACE.I want to be able to run a single VIP and only do a sticky session based around specific URL's not all. I've got the following configuration to apply a sticky session to a URL. [code]Notice, under the Policy-map type loadbalance http first-match WEB-POLICY-L7 i have two class statements, one that matches the URL L7 policy and applies a sticky farm and the second class falls into the default.Am i right in saying with this configuration, any http traffic hitting the VIP 192.168.1.1 that does NOT match /urltobedefined.co.uk/test sticky sessions are NOT applied. But traffic hitting 192.168.1.1 that does match /urltobedefined.co.uk/test will apply the sticky policy?   

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Cisco :: Zone Based Firewall Really Needed

Sep 18, 2012

I'm having a few problems at the moment with a zone based firewall setup. The more I looked into the problems the more I question whether I need the ZBF or not.My network is pretty simple. 1 Internet connection and 1 LAN interface and a few site to site vpns to the router.So what do people think to having this kind of set up and not using a ZBF?

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Cisco Firewall :: 2901 - How To Avoid SMTP Inspection On Zone Based Firewall

Aug 2, 2011

We had a problem with SMTP inspection dropping some regular emails (Cisco 2901 IOS 15.0). The original configuration.

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Cisco Firewall :: 2901 To Avoid SMTP Inspection On Zone Based Firewall

Jun 21, 2011

We had a problem with SMTP inspection dropping some regular emails (Cisco 2901 IOS 15.0).Incoming mails are going thru Spam and Virus Blocker so that bypassing SMTP inspection is not security issue in this case.

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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 10.20.30.40
[Code]...

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Cisco Firewall :: 3945 / Zone Based Firewall And WAN Interface ACL?

Mar 16, 2011

I am getting ready to deploy a 3945 ISR to serve as an internet and core router for and remote site.  I will be terminating a site-to-site VPN tunnel on it and also configuring a zone based firewall config between my "outside" (internet link) and "inside" (all internal nets).  My question is about how to approach securing the WAN interface with the Zone based FW in place?what kind of ACL do I need beyond those allowing and restricting remote access to the outside ip? 

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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 :: Zone Based Firewall Performance On ASR 1004

Sep 11, 2011

we are experiencing performance issues on ASR 1004 with ZBF as our campus edge router.Symptoms:

- sending small packets from inside zone to outside zone, for example UDP packets without payload
- this way I can generate up to 150.000 pps traffic (testing with packeth software, but we have had a real example with some kind of worm/virus)
- CPU load is about 1% (yes one!) to 2% all time !! (weird)
- ASR response to pings rises very quickly up to 5 seconds which makes box unusable dropping everything what goes through ZBF (so internet connection is gone)
- if I do the ping directly from box, it seems to work fine (no rules from self to outside zone in ZBF)
- if I remove interfaces from inside and outside zone (so disabling ZBF) and do the test again, ASR response goes from normal (0.2ms) up to 2ms (still sending 150.000 pps) and everything seems to work fine)
 
According to Cisco Datasheets: routing, Qos, Zbf ... on ASR 1000 with RP1, ESP10 should be done in hardware with up to 17.000.000 pps performance.

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Cisco :: 2900 - Implement Zone-Based Firewall?

Dec 25, 2012

I am looking to implement Zone-Based Firewall on some 2900 series routers (2911 and 2921.)  Based on some research I've done it looks like the cisco2911-sec/k9 and cisco2921-sec/k9 bundles should be all I need.  Is this correct, or is there some other licensing component that needs to be enabled for me to implement Zone-Based Firewall?

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Cisco Firewall :: 2951 Zone Based Firewall

Feb 16, 2011

I am confiuring ZFW on a Cisco 2951 Router. The router has the following interfaces: [code]Port Channel 1, 1.5, 1.10, 1.15, 1.20 have been added to the zone called IN-OUT. All the subinterfaces correspond to an internal VLAN.The router is connected to a MPLS network and has a BGP peer on interface MPPP. Over the MPLS network, an ecrypted DMVPN tunnel to HQ has been built (tunnel 0). EIGRP is the routing protocol running over the tunnel.Traffic coming in from HQ has to be firewalled on this router (don't ask me why!!). As a result, I am configuring ZFW on this router.
 
1-The router itself does not need to be protected, only the servers in the remote offices. That being said, I am not planning to create any self zone on this router. I don't want to break BGP, therefore the MPPP interface will NOT belong to any zone. Is this the correct way to do it?
 
2-The tunnel 0 interface will belong to OUT-IN zone that will protect all incoming traffic into this site from HQ. So when writing class-maps for the traffic coming INTO this site, do I need to write any class-maps for EIGRP or ESP? My guess is no, since that traffic will not be coming into the site, but rather just terminating on the router.

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Cisco Application :: 4710 ACE Source-address Matching In Nested Class-maps Not Working

Sep 6, 2012

Im having a (from google-fu) seemingly unique issue with load balancing. So for background, I am running the ACE 4710 device in "on a stick" mode, so I am using NAT and all that good stuff. I am also utilizing class maps and host header matching so I can save on IP space. [code]

Basically, as soon as I add that ACL_CLASS_beta.mainsite.com class map, all I get back from the ACE is RST packets and it comes back with an L7 LB Policy Miss.
 
It SEEMS like it should work, but it doesnt seem to like matching on those source addresses at all.

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Cisco Switching/Routing :: 881 - Zone Based Firewall (Can't Access Router With CCP)

Mar 3, 2013

I'm having an issue accessing a clients router on the WAN interface with Cisco config pro. I can get CLI access with SSH without any issue.  I have port 22 and 443 allowed as management access from my public IP - SSH working fine but config pro being refused connection, Possibly a certificate issue?

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Cisco WAN :: Zone Based Firewall On ASR1002 With Xconnect Encapsulation Mpls

Apr 3, 2013

we have an ASR1002 running zone-based-firewall with 2 zones:

zone_ouside
zone_ph
 
I have a common ZFW-configuration on that interfaces, e.g.
 
<code>
class-map type inspect match-any pass_cmap_in
match access-group name pass-ipv4-in
!
class-map type inspect match-any ph_cmap_in
match access-group name ph-ipv4-in

[code]....
 
There is some basic stuff in the Access-Lists; direction ph-ipv4-in contains basically "permit ip any any" and ph-ipv4-out contains some permits for certain services, but nothing else. The pass-ipv4-in/out ACL contains particularly the udp-500/4500-stuff as well as gre/esp/ah.
 
Here are the zone-pairs:

<code>
zone-pair security zone_ph-zone_outside source zone_ph destination zone_outside
service-policy type inspect ph_pmap_in
!
zone-pair security zone_outside-zone_ph source zone_outside destination zone_ph
service-policy type inspect ph_pmap_out
!
</code>

[code]...
 
The xconnect is only built up correctly when I configure the interface in the zone_outside. The destination for the xconnect is an ASR9k. If I do not configure the zone on the L2VPN-Interface, only arp-packet are allowed to tgo through the tunnel.
 
The L2VPN connects a branch office to the network of "PH". Now the trouble starts: when they are putting a host in the branch office, DHCP via the L2VPn works fine, they can ping anything from the branch office-PC in their local network and reach all internal servers etc.
 
BUT if they want to go to a destination outside their network, it will not work properly. For example, the branch-office-PC can ping 8.8.8.8 fine, but when they try to connect to a website, e.g. www.google.com, they run into a timeout. Netstat says, that the http-syn is sent, but no ack is received.

On the router, I see:

Session 1178BAE8 (x.y.225.250:2370)=>(173.194.35.151:80) http SIS_OPENING
 
whereas x.y.225.250 is the PC connected via L2VPN in the branch office to their local lan. When they put the same machine in their local lan directly behind the router (without l2vpn) everything works fine. When I switch off the firewall on the Gi0/0/0-Interface, the PC from the branch office also reaches its destination, so for me it looks like the firewall inspects the traffic going via Gi0/0/1 and L2VPN, what in my opinion, it should not do....

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Cisco Firewall :: 1811 / Zone Based FW With Non-standard HTTP Port

Apr 4, 2011

We are testing a Zone Based FW config since 1month, everything run smooth but we're having problem ( big slow speed access ) when a user try to reach a website on a non-standard port ( 8080 in that case ). All the trafic stay in our LAN, using a IPSEC/EZVPN connection between the 2 sites.As soon as I have disabled the Zone Based FW, the speed was much better.
 
I'm sure I'm missing a parameter to fix that problem but I tried many different options and I didn't find anything yet. All the routers are Cisco 1811 running adv IP Services 15.1.2.T1 IOS.A port-map has been created to map the port 8080 to the HTTP protocol for the inspection.The PC will have an IP address in the 10.2.2.x/24 and will access a server on 10.2.3.x/24, both devices are part of the zone private in each site/LAN.All the access between sites are managed by an ASA; the IPSEC/EZVPN peer.Little summary, it's gonna be something like : SiteA with a PC on private zone then on public zone for the EZVPN to SiteB on public zone and then private zone to access the server in the LAN.

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Cisco Firewall :: Policy Based NAT On ASA 8.4.1

Feb 27, 2011

How can I configure police-based nat to allow ICMP-only traffic on asaos 8.4.1 or 8.3?On 8.3 it was very simple:global (outside) 1 interface ,access-list outside_nat_outbound extended permit icmp any any,nat (outside) 1 access-list outside_nat_outbound.

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Cisco Firewall :: Does PIX 6.3 Support Dual ISP And Policy Based Routing

Mar 19, 2011

Just want to ask if a PIX firewall specific with a 6.3 OS version do support Dual WAN and PBR.

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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

[code]....

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Cisco Firewall :: Policy Based Routing To ASA5550 Inside Interface?

Mar 4, 2011

Is it possible to establish PBR rules that set the ip next-hop to point directly to the inside interface of the ASA5550?Or, do I need to direct this PBR traffic first to a directly connected router interface and then default route to the ASA?At a high level, here's what we have:
 
ISP 1 - with /21 IP PrefixNo BGP Routing3845 Edge Router - Default Route to ISP 1PIX535 Firewalls (HA) - Default Route to Edge RouterLAN Core/Distribution - Default Route to PIX535 Inside InterfaceAll applications/services use this egress path for PAT/NAT/DMZ/VPN/Etc. 

Here's what we are adding:
 
ISP 2 - with /24 IP PrefixNo BGP Routing3925E Edge Router - Default Route to ISP 2ASA5550 Firewalls (HA) - Default Route to Edge RouterSame connectivity to LAN Core/Distribution 

Goals:Maintain ISP 1 for nowMigrate only end user Internet traffic to ISP 2No disruptions to applications/services using current DefGW to PIX535 

Question: how to best use PBR to selectively direct traffic to the ASA inside interface?

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Cisco WAN :: Why 857 Adv Security Don't Have Class And Policy Map

Feb 1, 2012

Why my 857 adv security don't have class-map and policy map command ? now i wanna use traffic shaping on this but when i use command class-map it doesn't have. [code]

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Cisco Switching/Routing :: 3945E - Bandwidth Percentage For Nested Policy Maps

Jul 15, 2012

I'm trying wrap my head around bandwidth guarantee for nested maps. I tried adding a new class to two of my policy-maps today, and got this error: 3945E-1(config-pmap-c)#bandwidth 3000 Insufficient bandwidth 3000 kbps for the bandwidth guarantee
 
I'm not sure how it knows that with the nested maps and how it's computed. I have a 100mb WAN connectin going to 19 branches. I have a class-map that identifies traffic to the individual branch and within that class, a policy-map is applied to prioritize voice over video etc.
 
Here's the QoS setup:
 
class-map Branch1-Policy
match access-group branch-1-acl
*
*

[code]....

I was adding the Video-Conf class to both Traffic-6calls and Traffic-10calls when I got the above error.  How would that percentage be calculated? I know by default i can only reserve up to 75% of interface bandwidth. The platform is 3945E running 15.1(3)

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Cisco WAN :: Class Based Qos Monitoring On 6509

Mar 8, 2011

I set globally the QOS on my infrastructure and I want to monitor graphically the usage of each classes.I'd like to do that on my COREs Switchs which are Catalyst C6509.I can achieve that in command line, but it's not user friendly and it's not possible to have daily/hourly graphs.
 
So the idea is to find the value in the MIBS and put it in MRTG graphs.The only problem is that I cannot find it in the MIBS.

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Cisco WAN :: 7206vxr - Class Based Shaping

Jun 3, 2013

There around 70 remote sites and head end is of 200 Mbps MPLS WAN link..
Platform: 7206VXR, IOS: 12.4(15)T7
The QOS configuration at present is attached..
 
At the head end, we would like to shape based on remote sites bandwidth. Having said that, how many classes should I create to achieve this? Is there any other simplified way of achieving this ? 
 
Remote Site MPLS bandwidth
No. of remote sites
64 kbps
3
128 kbps
3
[code]...

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Cisco Firewall :: 2901 / ZBFW - DMZ-Zone To In-Zone Access

Jun 9, 2012

I have a Cisco 2901 which terminates a Class C address pool. I have split the Class C address pool into 3 sub-nets and 2 zones and created a non-addressable pool (private pool):
 
dmz-zone : x.x.x.0 TO x.x.x.127 (x.x.x.0/25)
in-zone: x.x.x.128 TO x.x.x.159 (x.x.x.128/27) & x.x.x.160 TO x.x.x.191 (x.x.x.160/27)
private-zone: 192.168.x.0 TO 192.168.x.255 (192.168.x.0/24)
 
I have configured private-zone NAT to use address pool x.x.x.161 TO x.x.x.189 within the in-zone.
 
Within the:
 
dmz-zone - are servers for : DNS, Syslog, SIP & HTTP/HTTPS in-zone - is a SMTP mail server which is behind VPN Gateway/NAT, TomCat (Application Server) and PostgreSQL Server private-zone - is where all standard users are operating from and they can access the SIP & HTTP/HTTPS servers within dmz-zone My problem is that I cannot seem to configure the ZBFW to allow the dmz-zone HTTP/HTTP server to redirect to in-zone TomCat server.
 
I do not want to make the TomCat server generally visible and am instead using the Apache proxy/ajp13 to connect from dmz-zone server to in-zone server.However I cannot seem to get anything (including icmp) to work from dmz-zone to in-zone.
 
I have Policy:

POLICY-DMZ-IN (dmz-zone to in-zone) which has:
any any udp/tcp inspect
any any icmp inspect
unmatched traffic DROP/LOG
 
But I still cannot get anything from dmz-zone to in-zone...Could the POLICY-DMZ-IN be being overridden by other dmz-zone to out-zone policies?

NOTE: I have routing rules for each of various sub-nets and all out-zone to dmz-zone, out-zone to in-zone and private-zone to out-zone, in-zone and dmz-zone routing works ok, so it appears problem is with ZBFW not routing table.

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Cisco VPN :: 2800 Zone-Based FW And L2L IPSec VPN

Jul 24, 2012

I have a 2800 router connecting a small office to the Internet.  I am using zone-based firewall to provide protection.  The small office also needs to connect to another office.  The 2800 is at the small office and an ASA at HQ.   I successfully established the VPN connection and have allowed Internet access for the small office.  The purpose of this post is my zone-base fw policy doesn't appear to be as secure as it could be.
 
2800 - I have defined two zones (inside and outside).  Traffic from the inside to the outside is inspected expect for the traffic to the other office.  I allow traffic to the other office to "pass" zbfw.  Because the traffic "passes" zbfw, I have to "pass" the same traffic for the outside to in policy.  The ASA has "sysopt" to allow VPN traffic to bypass the outside_acl.  Do routers and zone-based firewall have a similar feature?

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Cisco :: 3845 - Traditional ACL Vs Zone Based FW

Sep 28, 2011

I have a 3845 ISR that I have been managing for a couple years that has a traditional ACL based config.  We just purchased a new 3845 for redundancy and it arrived with the zone based config from Cisco.  Any opinions on whether I should take the existing router to a zone based config or should I configure the new router with traditional ACL config that I am more comforatable with? 

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Cisco WAN :: 2951 - Using CCP To Create Service To Be Used In Zone Policy

Jan 16, 2012

Configuring Cisco 2951 router using Cisco Configuration Professional. I have created a zone based firewall on the router and have created a zone policy for network traffic between two LANs or two zones. I need a create a rule for new traffic that should allow a custom user defined service to flow between the two zones associated with with two LANs.

The problem is How do I created a custom service that I can use for the new traffic rule? I created a network service object as shown in the screenshot below:However, when I am adding the new rule, this service object does not appear in the user defined service in the protocols tree box as shown in the screenshot below:
 
What is the proper way to create a custom user defined service? I was not able to create it using Class map by the way because again I did not find the service object group in the user defined service when creating a class map.

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Cisco Routers :: Configure SR520 To Route Internet VLAN To Firewall

Jan 20, 2012

My operations manager says "Could you go on-site and configure a new clients new internet connection?" I make the arrangements and go on-site. As I'm working with the providers tech he says "Do you have a sub-interface confgured for a dot1q VLAN id of 1057?", I say "What?". Anyway my firewall is not capable of dot1q VLAN, so he says "Do you have a Cisco router that can provide the trunking?", I say "Yes, I tink so but not with me". The question is can I use an SR520 between my firewall and the provider demarc to route the VLAN he is talking about? My initial discovery says yes but I am not quite sure of the details on how to achieve this on the SR520.

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Cisco Switching/Routing :: 9941 - Policy Based Routing With Firewall

May 10, 2012

I have problem while implementing policy based routing with a firewall. Let me explain in detail.
 
I have 2 remote site(Site A-small , Site B - Big) , Site B is connected with HQ with Tunnels 1 and 2 ,  Site B and Site A is connected with Tunnel 9941.
 
What I want is: Scenirio for Communication :
 
1)Site A--------->VPN Router Site B-----------> FW-------------->VPN Router Site B------------------>Central Site
2)Central Site--------->VPN Router Site B-----------> FW---------->VPN Router Site B-------------->Site A
3)Site B--------->FW-------------------->VPN Router Site B------>Central Site
4)Central Site--------->VPN Router Site B-------------------->FW------>Site B
5)Site A--------->VPN Router Site B-----------> Site B(no firewall)
6)Site B--------->VPN Router Site B-----------> Site A(no firewall)
 
Tunnel 1: 10.13.199.1-2
Tunnel 2: 10.13.199.1-2
Tunnel9941: 172.22.99.1-2
 
Site A LAN- 10.99.41.0/24
Site B LAN- 10.99.0.0/16
Central LAN - 10.18.0.0/16

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