Packet Sniffing is mainly used on non-switched networks to display data that was supposed to be sent to nodes other than yourself, allowing you to see information such as usernames and passwords etc.My question is, why can this technology not be used as easily on a switched network? When nodes send data through a switch does it become encrypted?
View 6 RepliesHow does a device attached to a Cisco IP Phone send data to the switch?a. As tagged (using the voice VLAN)b. As untaggedc. As tagged (using the data VLAN)d. As tagged (using the CoS value)The correct question is A in the book though it said that tagging is switch process PC's doesn't tag frames.
View 4 Replies View RelatedI have a virtualization server with 4 network interfaces and connected it to a SAN. There are few virtual machines which writes data to the SAN.
I want to connect to the SAN with multiple interfaces to speed up the network.
Is it possible to send data on multiple interfaces? How can I configure it?
Computers are connected to san through switch.
SAN: Equallogic PS 4100 E
Switch: Dell Power Connect
Computer: Dell T610
OS: Centos 5
Virtualization: Kvm
NIC: 8
I am not sure about network card brand now.
I have one server-A(windows 2008) installed one application called"host front" which gives athentication to connect Linux(mainframe console)server(SERVER B). These 2 servers are bihind the firewall.If one internal user who has the athentication to logine server-B ,tried to login server A,will get the" username and password"screen and once they enter the username and password ,will get the server-B screen.But if somebody try to connet via MPLS(we need to test MPLS site customers) from outside via ASA 5540 ,to server-A will get the "username password" screen and once enter the credentials,after 1 minitue will get error"http server faild to send datas to the server" and will not move to server -B screen.Where do you think is the problem?
View 3 Replies View Relatedi m not able to send data out of my laptop dell inspiron 15r (2013) using bluetooth but at the same time i m able to receive data instead.
View 1 Replies View RelatedI have one server-A(windows 2008) installed one application called"host front" which gives athentication to connect Linux(mainframe console) server (SERVER B).These 2 servers are bihind the firewall.If one internal user who has the athentication to logine server-B ,tried to login server A,will get the" username and password"screen and once they enter the username and password ,will get the server-B screen.But if somebody try to connet via MPLS(we need to test MPLS site customers) from outside via ASA 5540 ,to server-A will get the "username password" screen and once enter the credentials, after 1 minitue will get error"http server faild to send datas to the server" and will not move to server -B screen.
View 1 Replies View RelatedCisco 2951 w/ HWIC-4ESW
IOS 15.0(1)M5
#sh ip flow int
Vlan533
ip flow ingress
ip flow egress
#
The SVI sends the flow data just fine, however I also continue to receive flow data from most other interfaces.
I have attached a screenshot of one of our netflow collectors indicating that many of the interfaces are sending flow data even though not configured to do so. We have two different netflow collectors, from different vendors and both confirm the same interfaces sending flow data.
Normally I wouldn't care and ignore it, however one of them uses a license limit by interface and is a bit problematic.
So i have a dell latitude e6400 laptop running windows XP. Now whenever I connect to my home wireless network, it will connect fine but randomly it will stop sending or receiving data. Therefore i cannot connect to any websites and i get a connection error. I check my connection though and it is running through an excellent connection.
View 5 Replies View RelatedJust installed a RV042 with dual wan connections. Would like to make the WAN 2 (new cable modem as well) the primary connection over WAN1 (DSL), however whenever I switch from WAN1 to WAN2 in Smark Link set up, our email server will not send mail out, even though nothing is blocking the connection.
View 0 Replies View RelatedI have some specific traffic that I am attempting to pull off of VLAN 310 at the router, apply a route-map that sends this specific traffic back down to the switch on VLAN 55 (and the private address) and once it hits the switch apply a route-map on that VLAN 55 interface directing the same traffic over to the 72.x.x.9 address which goes through a FAP box back up to the router on another interface.
I have attached the config information, I know this isnt the best practice way to do this however right now this is how I have to do this.When runing a trace from the net traffic stops at .2 and when running a trace from my test /30 it stops at .2 as well. I am not sure what to do at this point
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I am currently trying to find the method or mechanism for calculating the distance between two wireless mobile nodes.Let's say, there are 2 nodes (node B and C) coming in communication with node A. How can node A knows whether node B or node C is nearer than the other? Is it possible to find it out by using RSSI? or are there any other mechanisms to calculate the distance?
View 1 Replies View RelatedSomeone has mentioned only 25 nodes are supported by the 1524SB and that one AP gets bogged down by 20 nodes or more.
View 0 Replies View RelatedI have two netgear powerline AV 500 ethernet adapters that give me near ideal internet access on my media computer (FIOS 25/25mpbs tests out at 8ms 25.4/24.7) and perhaps 100-140mbps to my router, printer, drive, etc. I now want to add a few wifi points and instead of having the mess of a powerline adapter + a wifi router I think it will be neater to have an all in one solution. Most of the ones that I find are 200mbps, however. I know that 500 is backwards compatible, but will a mixed solution slow everything down like it can for a mixed wireless g/n network?
View 2 Replies View RelatedAll 3 previous wireless routers I've had were all LinkSys routers and I had to overcome a learning curve since configuring this DIR-655 is slightly different..What I want to do is allow only the WiFi MAC addresses that I choose to access the network. It seems to me that in order to accomplish this I have to include all of my wired LAN devices' MAC filters as well. I can see having MAC filtering for WiFi devices, however why do I need to add my wired LAN devices MAC addresses? I'm not going to allow just anyone to walk into my home off the street and plug a computer into the network via CAT-5 ethernet cable, so isn't there a way to accomplish just the WiFi allow list and the heck with the wired nodes? The LinkSys routers I used in the past allowed me to allow the MAC filter for WiFi devices only. Is there a way around having to allow all MAC's and just allowing the wifi's?
View 5 Replies View RelatedCisco ISE 1.1.1 is given Certificate error while trying to access any of nodes. It is started after adding other nodes in to primary node. Accessing by IP's redirect to other nodes suppose if we accessing primary admin node by IP, it redirect to other nodes (secondary nodes or other nodes).
View 3 Replies View RelatedI would like to connect 3pc via switch and let them connect and be able to transfer data from one pc to another using network
View 1 Replies View RelatedI was assembling and testing some custom production machines here, and I had to perform a data transfer between two windows 7 machines through an HP 1400 switch. I saw 100MBps transfers for the first time. I only wish I could get the main network to operate that fast.
View 13 Replies View RelatedJust replaced my older Cisco router with an E2000 and now none of the connected PCs can ping each other. I have two wired and two wireless nodes on the 192.168.1.X subnet (defaults) using DHCP. All nodes can access the Internet with no problems, but none of them can see each other -- no ping, no Network Neighborhood, nothing. Since this all worked fine before I swapped routers and I've made no changes on any of the nodes, I presume this is something about the router.
I've tried all the usual troubleshooting steps (spent 10 years working as Systems Engineering in IP networking) - no luck. I've also tried various settings of the router (e.g. turned off SPI) but no luck either.
my new router doesn't block connections between attached PCs on the same subnet ....
P.S. One strange observation : using Wireshark I can see the pinging node (.137) ARP for the destination IP (.102), and the ARP reply is sent by the destination node (.102) , but it looks like the Echo Request never makes it to the target machine -- i.e. I think the router is blocking it.
The infrastructure has PIX515E as the Firewall and few Web Servers and Database Servers inside. Is it possible to retreieve information regarding the bandwidth available at the outside interface of PIX (Internet link utilization ) utilized by each of the nodes seperately? I could use SNMP to get the overall data transfer at the Outside interface of PIX but isit possible to get utilization details of individual nodes ? Is Netflow an option ?
View 10 Replies View RelatedMgmt Vlan 1 (default) Data VLan 10 (with access to internet) Is there a way to have a PC attached to a SG300 switch such that it can both access Vlan 10 for data and Vlan 1 for managment ? The PC's port clearly needs to be untagged PVID on vlan 10. I have tried adding vlan 1T and setting the port as a trunk port but to no avail, The switch is currently level 2. I am guessing this might not be possible in level 2 without setting the mgmt vlan to 10 ?.
View 3 Replies View RelatedI have a 3560 switch 48 ports ios version 12.2( 35)SE5
I want to run two data vlans on the same port. Currently the port is in access mode and set to vlan30 I want to add vlan 40
I wanted to use multi mode, on this switch not an option but private-vlan is, ? what version of ios do I need to run the multi mode or can I do the same thing with private-vlan.
I have RFID Reader (10.10.63.2 - 255.255.255.240) connected Cat-6 POE to ws-c3750x-24p-s - standard TCP/IP web service app pulling data from the reader every 250msec: I have my app server connect via vlan by ws-c3750x-24p-s IP address (128.1.70.1 - 255.255.0.0) as you can see its on a different sub net;
I can ping the device from the server - although I'm not getting any data coming through: my config are as:
0 [switch 1 provision ws-c3750x-24p-s]
1 [system mtu routing 1500]
2 [ip routing]
3 [no ip domain-lookup]
[code]...
I can ping the device from the server - although I'm not getting any data coming through.
I have 1941, 2901 ISR routers. I will use 3G backup when primary link (metro ethernet / G.SHDSL) goes down. Do I have to use Data License (SL-19-DATA-K9 / SL-29-DATA-K9) in order to switch back to 3G when primary link is not reachable) ?
View 7 Replies View RelatedAny recommendations for top of rack switch for within our data centre.Dual power is a requirement, but bandwidth and through put will not be huge as such I have been looking atthe WS-C3560X-48T-L and the Nexus 3048.
View 1 Replies View RelatedIf we configure a Voice and Data VLAn on a switch. And connect EX90 on voice VLAN and PCwith EX90 terminals. Than can we able to share a presentation or data with EX90 or not?
View 3 Replies View RelatedI plan on starting a high speed LAN for my Gaming LAN party's. We send 100's of GB of data over our LAN networking when we do this, so i need a good switch that can handle the stress of the massive data transfers. It needs to be a gigabit switch and at least 8 RJ45 ports.or is there a different one i should get all together? i cant spend a butt load. url...
View 3 Replies View RelatedI reloaded XP on an old laptop I have, a Toshiba Satellite, and it works fine. Problem is when I try to connect to my wireless network, it comes up as being security protected...and it isn't...and never has been. I have other computers connecting just fine, but I can't seem to figure this one out. I don't have a key to enter as there isn't one! I installed a USB wireless adapter, and it works fine, but I don't want to use the adapter on the laptop.
View 6 Replies View RelatedHow WEP cracking works. I have a much better understanding now but it seems whatever programs I download and however close I get I always hit a wall somewhere. I am using windows 7 64 bit and my network adapters/cards are Broadcom 802.11n Network Adapter and Broadcom Netlink(TM) Gigabit Ethernet. I am not sure if these are adequate. I was using Commlink and aircrack but not sure if they are compatible and which versions i should have installed. I got as far as the collecting packets stage but the packets that appeared said ENCRYPT which was not correct and then my computer went to blue screen adn shut down and I had to system restore.
View 1 Replies View RelatedThe only way we can use our Motorola router is unencrypted. I have gone into the router numerous times and reset it, unplugged it, retyped the WEP key, tried to shift to WPA and nothing works. None of three computers in the house will connect unless all encryption is off. We live in a good neighborhood on a cul de sac, don't get a lot of traffic through here, and know the immediate neighbors, but nothing is stopping a stranger with a laptop from sitting on the street and using our wifi. I've talked to the Comcast tech. The trouble just seems to be our boxes won't get past the WEP encryption stage.
View 8 Replies View RelatedI have XP running on this older laptop for my kids.I wish to connect this laptop wireless (WPA2 encrypted) with the internet AND with other hardware in my home (other pc, harddisk, mediaplayer, printer).I know it can be done in windows 7, and Microsoft also had a virtual WiFi research project for a WEP encrypted visual WiFi.But as said I need a WPA2 encrypted virtual WiFi for a laptop running XP.
View 14 Replies View RelatedI've noticed, that ACS 5.1 is writing .gpg archives for backups. I'm about to upgrade an evaluation system and the Installation and Upgrade Guide tells me to do a full backup and restore in order to upgrade an eval to a production system. [URL] (second note in section "Evaluating ACS 5.1)
Question: can the production system sucessfully decrypt the backup? According to my personal gpg it is CAST5 encrypted with one passphrase. Is this passphrase constant for all ACS 5.x?
How can we check when we connect using VPN client software if traffic is getting encrypted ?
View 7 Replies View RelatedThis is a 5-year-oldish Gateway MX-6124 laptop running under Win XP 2002, SP3. I'm using SureWest DSL, with an ISP-supplied ComTrend NexusLink 5631 Modem/Router. The router is set up as a Secure Network, using WPA encryption. The laptop wireless operation light toggles off/on correctly using Fn-F2 control keys.I can connect to an open or non-secured wireless router, & have verified that at my church, at the Public Library, and at Starbucks. However, I cannot successfully connect to a passworded secured wireless source. I tried to use a secured network connection at my church yesterday, and could not connect. It "tries & tries" and eventually gives up and displays a cannot-connect type of message.
The laptop has worked correctly for several years on my home wireless network. It only stopped working about 3 or 4 weeks ago. I cannot recall changing anything in setup; I probably did it accidentally.I've spent about 2 hours in a couple of sessions with SureWest tech support. They diagnosed router setup using direct connect to the router, plus they talked me through several attempts at configuring the wireless config setup on the laptop. Everything I reported to them on the config settings appeared to be just fine. They also deduced that the wireless config on the desktop & router was correct.SureWest techs finally concluded that something was wrong with my laptop software config or the hardware, disabling it from making a encrypted connection. That sounds right to me, now having witnessed the secured connection failure described above, at my church wireless site.
I've looked at all the refs & things I can think of, plus followed step-by-step directions a couple of times with the SureWest techs. They rightfully pointed out that they could not make a tech support repair call on what did not appear to be a SureWest-related problem.I can easily make screenshots of any config screens needed on the laptop & upload to this forum.