Protocols / Routing :: How To Use Firewall In Packet Tracer

Apr 5, 2013

I have a project about ISP in packet tracer,I want to know how to make firewall configuration and steps I don't know how to use firewall in packet tracer at all.

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Protocols / Routing :: Cluster In Packet Tracer?

Jan 16, 2011

have 2 routers connected in cluster ith serial dte link. screenis locked. I need to draw a topology of Internet cluster, but i don't know how to discover whats is in it, because i don't have set ip

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Cisco Firewall :: ASA5505 - Packet Tracer Output - Access Denied

Mar 16, 2013

I am trying to troubleshoot a problem where in one of my remote site is not able to access some networks at HQ over Site to SIte VPN ( asa 5505 at Remote and 5520 at HQ). I ran packet tracer and HQ ASA looks clean as everything came out as ALLOW. Remote site ASA packet tracer give me DROP out at Phase 9 (VPN). I am not very sure what to look in ASA for resolution now. Is it an access list that is blocking the traffice or VPN setup.

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Cisco Firewall :: 5550 ASA (8.3) - Packet Tracer / Multi-Context Classification

Nov 22, 2011

I've been using packet-tracer for some time on and off with mixed results.
 
I'm running a multi context firewall with over 10 of the contexts sharing the same outside interface / network. All interfaces obviously have valid, unique IPs and also unique MAC addresses as mac-address auto is enabled in the system context.
 
This is an ASA 5550 running 8.3(2.10) interim so includes the fix for the well known packet-tracer classication failed bug.
 
So in theory, with firewall contexts on a shared interface the ASA should use the firewall MAC address to classify incoming traffic to the correct firewall and as far as I am aware, only fall back on using NAT to classify if the interface MACs are the same. In reality on my platform this doesn't seem to be happening and the classifier is using NAT to determine the destination context. I'm seeing this with live traffic (i.e. not generated by packet-tracer) in logs and can prove it by disabling certain NAT rules (there is some overlap with the IP addressing behind each firewall).
 
My question regarding packet tracer is this - in the above scenario with a shared outside interface, does packet tracer ALWAYS use NAT to determine the destination context? Or does packet tracer look up the MAC address of the ingress interface according to what context you are running packet tracer from? It appears that packet-tracer is using NAT in my case which could be just symptomatic of the potential bug I've described above rather than by design.

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Cisco Switching/Routing :: 3560 Topology In Packet Tracer Related To Etherchannel Configuration

May 23, 2012

i have made a topology in packet tracer related to etherchannel configuration.i am using 2 3560 switches and 1 2950 switch. Now what i want is to bundle up the redundant links between these 3 switches. The links fa0/1-3 between 2950_1 and 3560_1 switches have been bundled up but when i try to bundle the links fa0/4-6 of 3560_1 to fa0/4-6 of 3560_2 it wont work. i am using channel-group 1 mode desirable between the 3560 switches. secondly if i want to assign ip to port channels then it has to be of same subnet between 2 3560 switches right and it must be same between 2950_1 and 3560_1. But these 2 subnets should be different from one another.

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Cisco Switching/Routing :: 3560 And 2960 - Update Switch IOS Version At Packet Tracer 5.3

Oct 9, 2012

I am using Packet Tracer to simulate Cisco networking.As the existing IOS of the 3560 and 2960 switch are in older version which has no new feature in new IOS,  how to upgarde the IOS of Cisco switch at Packet Tracer?

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How To Find Packet Tracer 8.6.1

Apr 19, 2011

i'm on the CCNA 4 accessing the WAN part for the Cisco Academy. I'm trying to do a packet tracer 8.6.1 and I'm stuck. I'm looking for the answer so I can figure out what I'm missing.

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How To Setup DNS In Packet Tracer

May 16, 2011

How can I pair a html file to a domain name in packet tracer?

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Cisco Packet Tracer VOIP

Sep 9, 2012

having some issues. My basic VOIP network I can get to work no problem uner Vlan 1. But when I try tomake multiple basic networks to connect and put them in to diffrent Vlans such as Vlan 2, 3, 4 and conect them the phones now say configuering IP.

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Can't Ping Between Routers (Packet Tracer)

Mar 6, 2011

I'm trying to set up a network comprised of three LANs connected by serial. As this is a small part of an assignment I've been instructed to subnet into /26 and to use /30 subnets for my serial connections.At the moment I can ping between devices on each of the LANs but I can't ping between routers at all. Embarrassingly I'm not sure why, I think it may be something I've missed on setting up the serial links as I have set routers up fine before using other connection types.

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How To Unlock The Configuration Tab Packet Tracer

Oct 25, 2011

how to unlock the config tab in packet tracer?

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Cisco :: Packet Tracer 6 Download?

Jan 29, 2013

I'd like to know if packet tracer 6 can be download yet?

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Cisco :: Range Of Ports In Packet Tracer

Oct 27, 2012

I'm preparing myself for CCNA exam and i started doing a lot of different examples. I've got problem with Packet Tracer when i'm trying to apply some security settings for the range of switch ports in default VLAN 1. I might just demonstrate my commands so it will be easier do understand.

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Cisco :: Enabling PIM In Packet Tracer 5.3.3.0019?

Dec 5, 2012

I am trying to test PIM SM mode between some 2811 routers built up in my packet tracer 5.3.3 .But surprisingly PIM option is not coming in the interface mode .Even IP multicast option is not shown in global config mode.

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Cisco :: Configuring EIGRP On Packet Tracer?

May 27, 2012

I have been playing around with Packet Tracer trying to understand EIGRP and to put it into practice. Well im not doing so well, I cant get the routers to form an adjacency therefore nothing is pinging outside of the routers. [URL]

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Cisco :: Simulate An ISA Server In Packet Tracer?

Jan 21, 2013

I'm an IT student and I've been assigned with homework simulating a network including an ISA server and some clients in Packet Tracer but I can't find anything which can be configured like an ISA (Internet Security and Acceleration) server(this is kind of Microsoft's technology as I know) in Packet Tracer, the generic Server from the devices box has only some basic services such as HTTP, DHCP, DNS, FTP, AAA, ... but none of anything related to ISA, all the servers in Packet Tracer have only 1 interface whereas the ISA server (as far as I know) should have at least two interfaces, and there is also no CLI supported for those servers so I think I can't simulate ISA server in Packet Tracer, can I?

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Manually Assigned Ip Configurations Using Packet Tracer?

Oct 12, 2012

using packet tracer, how can i find dns server ip address and i am having trouble pinging the desktops and server that i manually assigned the ip addresses to

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Cisco WAN :: Packet Tracer 5.33 Silent Install?

Mar 18, 2013

I'm trying to create a silent, scripted install of Cisco Packet Tracer 5.33. At the end of the install there is a box that comes up about Packet Tracer Skills Based Assessment (PTSBA). Is there a way to supress this dialogue box? I'm using "PacketTracer533_setup.exe" /sp- /verysilent /norestart" with no luck.

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2621XM Packet Tracer IGRP Configuration

Sep 29, 2011

I am using packet tracer 5.3 version and I am trying to configure IGRP on it but it doesn't show me igrp under routing protocol selection.Router number is 2621XM.IOS version is 12.2.learn the configuration of IGRP.

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Protocols / Routing :: How To Get PBB CFM Packet Format

Oct 13, 2012

How to get the packet format of CFM used in the provider backbone domain having ethertype (0x88e7) & Itag fields in it. I think wireshark doesnt have this code implemented yet.

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Cisco :: Packet Tracer - Must Block Communication Between Computers

Mar 22, 2013

I'm student from IT school and i have a school project but i have a problem on packet tracer.In a vlan, i must block the communication between computers in it but i dont know how i must do that.Effectively, it's about 250 computers in this VLAN but each computer can't caommunicate between us.

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Cisco :: Where To Download Router Template On Packet Tracer

Oct 20, 2011

Asking about Packet Tracer. I currently use packet tracer 5.3.2.Can you give me any link where to download router template on packet tracer? I want to explore cisco 2821 but packet tracer 5.3.2 has an existing of cisco 2811 only then, I tried to add the 4 ports of RJ11 but I cannot see the 4 port telphone.

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Cisco :: VLANs Route Outside Of Network Packet Tracer

May 30, 2012

I am unable to get traffic from any VLAN to communicate outside of the router, as well as get any traffic from outside of the router to communicate with any device on either VLAN. I am able to ping the router from each device on each VLAN, and vice versa. However, the traffic seems to die at the router, and I cannot figure out why. I know it's probably a small, easy fix, but I cannot seem to find any kind of documentation on it.

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Cisco ASA 5505 Simple PAT - Packet-tracer Can't Look At Any External Devices While Running

Sep 16, 2012

here, am used to the RouterSwitch CLI but been asked to set up an ASA 5505 8.4.Quite simply I am trying to at least test out a static PAT from an external source to an internal server in a test environment and no matter whether I set it up as an auto-nat or a twice-nat whenever I run a packet tracer I end up with the same error. This is the packet-tracer I am running-packet-trace input outside tcp 80.80.80.80 3389 10.240.0.10 3389
 
Phase: 5
Type: NAT
Subtype: rpf-check
Result: DROP
Config:nat (inside,outside) source static server publicIP service RDP RDP
Additional Information:
 
[code]....
 
Now I have a couple of questions initially. I have made the presumption that packet-tracer does not look at any external devices while running - as in as long as the ports are up it doesn't matter what is on the end of them for testing purposes? Is there anything I am missing?I have this morning wiped the config and have simply set up the adapters, a default route and twice nat and am not sure why I keep getting the error. I am sure it is something very simple and I'm being a massive donut!

[code]...

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Protocols / Routing :: How To Capture QOS (Quality Of Service) Filed From IP Packet

Aug 8, 2012

I want to make packet sniffer which capture the IP packet and then extracting QOS filed from it's header

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Cisco Security :: Finding Security Labs For GNS3 Or Packet Tracer?

Dec 19, 2011

I'm studying for CCNA Sec exam and looking for any security labs for GNS3 or Packet Tracer.

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Cisco Firewall :: Packet Flow In 8.4 Ios?

Oct 17, 2012

I think packet flow is changed in 8.3 IOS and above.We are using private NAT for ouside traffic.why we are using private IP for outside traffic?

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Why WAN Protocols Like Frame-relay / HDLC And PPP Are Called Layer2 Protocols

Aug 20, 2011

why the WAN protocols like Frame-relay, HDLC and PPP are called Layer2 protocols?What is the address scheme they use?

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Cisco Firewall :: ASA5525X Crash During Packet Trace

Dec 16, 2012

Our Firewall is just new. ASA5525X
 
Today, during a packet_trace to debug a routing problem, the active ASA
  
- thsasaprd02 - crashed suddenly. 
 
I was able to copy-paste the console - including the command that triggered it - After the reboot I ran the command again, on the same ASA - after doing a manual failover - the command succeeded normally.

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Cisco Firewall :: ASA5580-40 Deep Packet Inspection?

Jan 18, 2012

I am having issues with PXE boot images for PCs cannot be loaded from remotely.The diagnosis revealed that SunRPC & TFTP were being inspected by ASA causing drop of packets.So I excluded these two inspections for the particular server behind the firewall. It seem to resolve the issue for instance but it crawled back again.
 
Is there a way that the inspection can be turned off for that particular server at the IP level?

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Cisco Routers :: RV082 And Packet Loss On PBX With Firewall Enabled?

Aug 28, 2012

Recent incountered an issue with our elastix pbx and packet loss. Noticed this morning that when I turn on the firewall on our RV082, packet loss begins around the level 3 servers I see in my traceroute, and then slow spread out to all hops. When I turn the firewall back off, all hops have no packet loss or less than 1%. The weird part is, previously, I had the firewall enabled, and never had this issue.

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Cisco Firewall :: 887VA-W Keep Getting Drop Packet Error Message

Jul 13, 2012

I have an 887VA-w connected at home. I am using ip virtual-reassembly an all interfaces (dialer and all internal VLANs), I am also using CBAC (currently setting up ZBF). The issue I am having is that I keep getting drop packet error messages and the reasons can differ. Below are some of the outputs I recieve: [code] I have done a show ip virtual-reassembly on all the interfaces and the counter is shown as 0.

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Cisco Firewall :: PIX 525 - Windows Server 2008 And PIX Packet Dropping?

Sep 6, 2011

I came across a situation where a client had an old PIX 525 running PIX 6.2.  There was a Windows 2008 R2 server running Exchange 2010 that was having trouble delivering email to a handful of email servers.  We then found out that we could telnet to these servers on port 25 but got no return traffic.  We then went back the old email server that was running Windows 2003 Server and could telnet to port 25 on these email servers and got a response, saw the banner and could issue commands.  The first thought was reverse DNS which we thoroughly checked and it was not.  I turned off the smtp fixup protocol and that didn't fix it either.  From workstations on the network running XP or Windows 7 or Linux you could telnet to these servers and you would get a response but just not with 2008 server.  I spent hours on the phone with Cisco support and it was determined that the packets were returning and we could capture the packets on the outside interface but they were then dropped by the firewall.  Using the 6.2 version of PIX we could not determine why the packets were being dropped.  I suggested upgrading to the next major version to be able to troubleshoot the issue further.  We then upgraded the PIX to version 7.0(8).  After the upgrade we were able to telnet to the problem mail servers from Windows 2008 Server and there were no issues. Is there a know issue with Windows 2008 Server and PIX 6.2? 

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