Security / Firewalls :: Which Packet Capture Program To Use
Oct 24, 2011
I have a piece of software that I suspect is sending unwanted data over the internet to some IP address. I'm not an expert in anything related to computer networks, but I figure I could use such software after playing around a little with it.What application could I use that would so the following:
a) capture all the bytes the application is trying to send out so that it seems to the application it is doing it and see the place it was trying to send it
b) after inspecting the data, if it was ok, send the packages to wherever it was supposed to go so that it seems the original application sent.
I'm trying to use EPC on ASR1001 running IOS-XE 3.4, and it won't work. Configuration commands are accepted by the router, but there are no packets in the capture buffer.In release notes for IOS-XE, in the 2.5 section, there is a statement that EPC is not supported on ASR1k. Is it true also for newer versions of IOS-XR?
I have a need to capture traffic on an ASR 1001 subinterface, but what I have found is that the Embedded Packet Capture feature is not supported on this platform. Are there any simple alternatives to capture egress traffic on a subinterface or am I SOL? This is a walk in the park on normal IOS routers...
I want to capture packet on gi0/0 of PE1 in order to show customer that all his traffic is encapsulated and transmitted by L2VPN (ldp signaling) in his lab.
PE1 and PE2 are Cisco3945 and L2VPN is working well. I tried cisco RITE(Router IP Traffic Export Packet Capture) feature, but the output was not what I expected. I tried both export mode and capture mode. Only LDP hello message I got, looks like RITE is only interested in IP packet. Monitor session wasn't effective as well because it is not a switch.
Is there any other way/workaround to capture customer's traffic encapsulated in L2VPN?
What I did on PE1 when I was trying RITE export mode: ip traffic-export profile test bidirectional
I would like to capture packets which are going through an IPSEC tunnel. The packets originate in the appliance (syslog) and are sent to the remote via a VPN. I can see the encapsulated packets going out to the peer and I can see the ISAKMP packets to and from the peer. Because the packets originate within the appliance, they do not appear on any interface to be captured.
Is there some way to capture these packets before they are encapsulated?I attempted to capture packets on the asa-dataplane, but they are in a format that I cannot decode, and I cannot put a filter on the capture.
I operate between c6509-E, what did you flooding? its just packet capture gi1/3 but i dont know it and is it attack?also same seq no switch gots it?what is problem?
how to capture the incoming and outgoing packets on the balancer?The load balancer is connected in between the customer DCN and cisco switches 2960.The reason of capturing both incoming and outgoing packets on the balancer is to prove to our customer that there is no packet loss issue on the balancer, and it could be some issue on their DCN network.Since it is a production server, I will need to ensure that there is no impact to the incoming and outgoing traffic on the balancer and other networking equipments as well.
I have always done my port monitoring (SPAN) on Cisco layer 3 switches with no issues. This time I am trying to do this on a Cisco 2901 router:
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.1(4)M2, RELEASE SOFTWARE (fc1) System image file is "flash0:c2900-universalk9-mz.SPA.151-4.M2.bin
I need to have the source port gig0/0 and destination port gig0/1. There is something about the gig port enumeration (slot/port#) that makes the command rejected. It is self explanatory:
#sh ip int brie Interface IP-Address OK? Method Status Protocol Embedded-Service-Engine0/0 unassigned YES NVRAM administratively down down GigabitEthernet0/0 xxx.xxx.xxx.xxx YES NVRAM up up GigabitEthernet0/1 unassigned YES NVRAM up up Serial0/0/0:0 unassigned YES unset up up
[code]....
It doesn't matter what slot or port number I use, it is always rejected. The command is rejected for Both destination and source gig interfaces. I tried a wide variety of slot/port numbers. To my best understanding the complete port names are: GigabitEthernet0/0 and GigabitEthernet0/1, so why does it think there has to be another digit after 0/0 or 0/1? Does it have anything to do with the Embedded-Service-Engine0/0 being administratively down?
ATT notified my company we have a virus infected pc on one our networks which sits behind a Cisco ASA 5505 running 7.2(4). The set up is a basic inside/outside NAT configuration. They gave us the destination ip address and port which the our pc is contacting. I have been tasked to track down the infected pc. I created the following access-list and applied to the inside interface:
access-list VIRUS extended permit TCP ANY host x.x.x.x EQ YYYYY log debugging interval 600 access-group VIRUS in interface inside
I enable logging to the console whose output did not list the IP address of the infected pc, only the ip address of the DNS servers we were using. I then used the following capture commands to try locate the internal ip address of the infected pc:
Neither step worked and the resulting console output overwhelmed the firewall in a very short period of time. Before attempting this task again, I would like to know if I am going about this the right way or if there is a better methodology?
Is it true that the FCC is investigating the Pogo game site because of poor security? Is Java the cause of this problem?I'm very leery of getting on the Pogo site because I've been told that my computer could get a virus and crash.
I'm new to IT, and have been put in charge of managing our servers hile my boss is on vacation.We currently have a Sonicwall Network Security Appliance that handles our Firewall/VPN and have web content filtering set in place.I have a user who belongs to 2 CFS policy groups that we have set up. I've double checked with Active Directory, and he is a member of both groups.
This person SHOULD have access to Job searches/ and Restaurants,but receives a "content blocked" message on his browser.It appears to me that the settings in Sonicwall are correct, as well with AD member groups.
I am trying to connect to a Security-enabled wireless netowork. I have the key. My problem is that I can't seem to figure out how to enter it. When I try to connect I open the "view available networks"window. I see the network name and it shows a strong signal (all 5 green bars).
I want to install Microsoft Security Essential on my PC, but I am not sure which download I need. One says amd64 and the other is x86. I am using windows xp 32bit.
My school forces me to install an enterprise security program in order to connect to their network and get online. Its very bloated, and i can't edit the settings, they make it scan my computer everyday and so on.I want to use my OWN security program which i bought (norton).Is there any way to work around this requirement to get online on their network?
I have windows xp home and the last few days a security installation has kept trying to install ie: "Microsoft Visual C++ 2005 Service Pack 1 Redistributable Package (KB2538242) (update 1 of 1)..."
I opened my iTunes program today and noticed a roommate's MP3 files were picked up on my network. I think the name of the program is Rocket Tube MP3. Anyway, I came on here because our computers use a Wi-Fi internet connection and I was wondering how much of my web activity (history, cookies, temporary files, etc) he could see from my laptop if his computer was a desktop downstairs. He's very tech-savvy (a former IT guy) and I don't want him snooping through my personal records.
We are a non-profit organization that is heavily reliant on interns that use their own laptops a lot here. My concern is they come in and connect to our wireless network with no supervision or anything else. I am worried they will introduce a virus, trojan, or something to our network. What the best way to keep them from introducing unwanted malware from a thumb drive, virus in email, or something to that effect shy of standing over them while they install and run an antivirus software?
I have problem with the Lan-to-Lan VPN tunnel.the VPN working fines since 9 months ago without any problems.Suddenly got the problem!,In last two days we faced problem the VPN down.in first time the problem in phase-2.. but after that in phase-1... in latest no data packet received to their side.
I am looking for some resources on what steps would be involved in configuring a Cisco ASA 5500 when obtaining a new ISP. Since our static IP will be changing with the new ISP, just need to know what configurations changes will need to take place. We currently have a working config with DSL, but are switching to cable. We are using a DMZ configuration, and are going to try using ASDM first since that should be easier
There are three Win 7 laptops on the LAN trying to connect to the ASA5500 Firewall. They generate a Severity Level 3 alert and try the same port three times then move to the next numerical port and try that three times. Is this a malicious Hack.
I have been trying to get into one website (url)The world's best online marketplace, List free Classifieds,buy and sell - auction,post a job and get hire from over 1 million top professionals. | Wanaifieds.com and I can't get into the site from my home I can get into the site everywhere else but here I called the service provider and their telling me it's not them they don't block website and the IP is not stationary so their nothing wrong with their end I called the hosting company of the website and they told me they don't block any IP's I don't know what to do I do remember when it was working about 4 days ago I tried something o the site and I messed up and I clicked back instead of putting my password a little box poped up and said something about a certificate or something but I just clicked off and when I tried to get back on the site.
I'm working with Cisco ASDM 6.1 for pix. I want some of ip addresses are not shunned thus provide a list of addresses which should not be shunned in threat detection, but some of ip addresses are shunned yet.
I want to block 10.0.0.1 and 192.168.1.1 but my router says invalid domain so if will the guess network be able to go to page 10.0.0.1 and 192.168.1.1 even though I don't block it? I have a bypass account but don't want anyone else to access 10.0.0.1 and 192.168.1.1. Also can you tell me some proxy sites I can block?
when I run nestat -b command. I always see a lan ip sending TCP traffic to my computer with state syn_receivedProto >> Lan Address >> Foreign Address >> state >> Process idTCP >> (my ip) >> 192.168.2.222(lan ip) >> syn_received >> 4
