i'm planning to use wireshark in my final year project (packet sniffing in wireless networks)and i alraedy installed it and captured some packets, but i don't know how to analyze those packets.I have basic information about networking from CCNA1. I want to learn how to anaylze the captured packets and what the hexadecimal values i got with each packet represent and how to read them.
Ive just downloaded wireshark just to mess around and ive noticed that even when ive got nothing open its still capturing packets. It gives me a choice of interfaces i want to choose to monitor and i would of thought it be "Realtek PCIe Family Controller" as this is normally the default one (im using wireless) but its saying no packets are being captured from this interface its the "Microsoft" Interface thats capturing the packets. Ive attached a screenshot, i know this isnt nothing bad but was just wondering 1) why isnt my Realtek PCIe interface capturing anything?
If I look at a site like wikipedia for example ,it has lots of text. If I capture those packets which made up that page using wireshark I cant find that text anywhere no matter what filter I use and even though I turn on ASCII. Is it because text is being rendered unreadable by some kind of compression?
I had Symfony modem with Asus ap and 1 d-link switch. i changed my modem because that was old and bought TP-Link(TD-W8961ND).It is connected to the Dlink switch and the switch is connected to the Asus Ap(RT-N12) The situation was the same just modem has been changed. Now i have this problem: i have internet with cable every where...behind switch or behind Ap...but when i wanna use internet with wireless via Asus Ap it doesn't work i checked every thing...the Asus Ap has 3 mode(Ap,Router,Repeater)...i chose every one but only repeater mode works. by the way with modem wireless i can get to the internet but the signal is fair for me to use!
we have two 2851's. One in Australia, one in NZ, IPsec VPN between the two.
We have multiple subnets behind the tunnels. From all the sunbets in Aus we can reach all the subnets in NZ, except for one. From NZ we can reach all the subnets in Aus. The traceroute and pings from the subnet in question in Aus goes out the internet interface of the router instead of going into the tunnel.
The subnets in question are 10.110.220/24 (Aus), 10.110.250/24 (NZ)
The access lists at both ends cover the traffic required but for some reason when leaving Australia the traffic is not captured by:
In my environment we have 3750x switches running ios 15.0 (1) SE2. We have port security mac address sticky configured on all our switch ports. I noticed that we have several interfaces (on different switches) that are up but have not captured the MAC address from the workstation. Here is one example:
I have a Time Warner Cable business class service with no static IP, with a wireless modem which is plugged to a CAT5 distribution panel. On the jacks (2 other rooms on the house) I have a Linksys E3000 and a Linksys Valet router for signal boost and gadgets usage (TV, cameras, etc).The main router (TWC) has it's own external IP which TWC assigns to me and internally distributes via DHCP the range 192.168.0.x. With that said:
- The E3000 has a 192.168.0.6 IP -- this is fixed setup on the TWC router (ubee brand) by MAC address - The Valet has a 192.168.0.7 IP -- this is fixed setup on the TWC router (ubee brand) by MAC address - The main router has the 192.168.0.1 as the gateway and web-interface
Whenever I connect something to the E3000, it is distributing the 192.168.1.x range and the valet 192.168.2.x range.That works perfectly for my home based business until I decided to use more stuff on the network such as a IP printer, IP cameras, etc.
- The IP cameras are connected to the E3000 due to signal strength and I have manually assigned them the 192.168.1.15 and 192.168.1.16 IPs and ports 9001 and 9002.
- The printer is connected to the E3000 and I have manually assigned the IP 192.168.1.30.
Issue 1: Port forwarding On the main router (TWC - UBEE) I have tried to setup a port forwarding by informing the Local IP as 192.168.0.6 (E3000 IP), Internal Port 0, Public Interface IP (0.0.0.0), Ext Start Port 9001, Ext End Port 9001, Protocol - Both, Enabled Yes. On the E3000 I did the same config (screen shot attached e3000.png).This is not working properly. I can't get into the camera.
Issue 2: Printer/ The printer is only accessible if I connect to the E3000 (because it is on the 192.168.1.x network)
Issue 3: How to configure all the devices on the same subnet? If I want everyone to be on the 192.168.0.x network, how to configure properly the E3000 and the Valet? I have tried to force them into the same network but it would not work properly. It would not get an IP from the UBEE router (main).
Here's the layout: Cable modem in the basement. Several devices in which I'd prefer a wired connection in the basement. Upstairs on the 1st and 2nd floor of the house are many devices in which wifi is fine or preferred.Here's the problem: As you might guess, wifi is weak upstairs and certainly on the patio and 2nd floor. I have an access point upstairs that I've experimented with but it is flaky.
I am a new student in networking, taking the CCNA courses, and now want to rewire my home. I currently have a cable modem and E2500 setup running my network. I want to get the modem and router out of my computer room and in the basement where the cable enters the house. I want to do this to clean up the computer room wiring a bit and to run line drops to different rooms in the house where the internet will be utilized.Currently there are two PC's, a laptop, a tablet, sometimes a phone, and an XBOX using the internet. I want to get my printer back up and running on the network but thats another story. Only one PC is currently hardwired. I would like to run two cables into the room with the PC and XBOX that are currently using wireless, at least two into the computer room for the PC and network printer, and one or two into the living room for the blue ray player and possibly an internet tv.
I have a D-Link DGL-4500 router and my landlord recently ungraded our internet connection. However, now I get this error message when I try to hook it up to the ethernet hub,"The addressing of the Internet side learnt thru DHCP conflicts with the addressing selected for the LAN side. Internet communications will be disabled until you have changed the LAN side addressing to resolve the problem."
Recently i have upgraded the IOS of ASA5550 (in HA mode) to 8.4.2 from 8.0.5, after OS upgrade we found that the syslog from thses firewalls are not getting captured/transfered to centralised syslog server. The server is reachable from the firewalls.
I have a Asus EEE PC 900 laptop running Windows XP Home. I DO NOT use a modem or router. I connect wireless to someones network (which of course i dont know who it is or how far it is from me) I connect to a Linksys unsecured network. I get good to very good (some times excellent connection from it) The name of my adapter is: Atheros AR5007EG wireless network adapter.Two days ago i was on the internet, and all of a sudden i Lost service ( usually when this happens i wait it out and it comes back)But it hasn't.So I'm checking through my settings and i noticed that im sending way more network packets than receiving. Last i checked it was around 40,000 sent and 5 received. So I wait and wait and wait and the most packets it would go up to is 90 while as sending is still in the thousands.It also says im successfully connected with good to very good connection status (but yet i cannot surf the web because i do not have enough network packets)
I tried different locations in my house (that didnt work)I uninstall and reinstalled my network adaptor (that didnt work)I turned off and on the wireless switch(that didn't work). Im wondering if this has something to do with my laptop or the other persons network? how can I increase the received network packets?
During the last month or so my internet connection keeps stalling and will not work until I repair the connection, however I am still connected to the network, I just can't send or receive packets. In particular when I am downloading things, it will stop after 2MB is downloaded or 300MB, it just random. After sending/receiving 7,000 packets or 700,00. This only happens to my computer with the wifi adapter. Prior to this I didn't have any issues for over two years. My phone and laptop still connect via wifi to the internet. And the xbox and blu ray player are connected via ethernet and have not had any problems. The log for my router states "deauthenticate reason 3", which I have found to mean "The access point went offline, deauthenticating the client". So, I figured that the issue could be the wifi adapter which I installed on the laptop and that too never had an issue. I used inSSIDer 2.0 to see the close by networks and changed channels to get away from the strongest ones. I tried switching to wireless n only instead of g and n, the problem still persists.
Then I figured the issue must be my computer and no malware, spyware, adware nor any virus was found. The same thing happened while in safe mode. I also tried the winsock fix to no avail, reinstalled the wifi adapter and made sure all firmware for the router and adapter were up to date as well as XP. I also tried with my firewall shutdown but I still loose the connection. So I then reluctantly did a clean install and even with the bare essentials it still stopped working. I also bought a 15ft USB extension to get a better signal but still, even though I have a good or excellent signal I still have problems. My latest thought was this was the only machine running firefox 4 so I went back to 3 and that didn't either. I checked my usage with my ISP and I am no where near the 250GB a month.
I have setup a webserver on my home PC and I have forwarded port 80 on my router to the IP adress of the PC that is running the web server. The web server is working great; I can get to my web pages from outside of my home by going to http://MyIpAddress/Anyway, the problem is with the Windows Media Player plugin I'm using. I want to embed 6GB MPEG-2 videos into my web pages. I have some videos on my PC and I want to be able to watch them remotely by connecting into my web page. It works fine when I'm at home; other PCs can connect and play the videos no problem. The problem is when I'm at work. When I'm at work, I go to my web page (via my IP address in a web browser) and the Media Player plugin says "Connecting" for a minute, then it says Ready, but the video will not play. I tried using a smaller, AVI file (680 MB) instead to see if the problem was streaming such a large file, but the video still would not play.Do I need to foward more ports on my router so that Windows Media Player can connect back and get the information it needs?
I have ADSL modem in my workplace that is connected to a switch and other workplace computers are connected to this switch so the ADSL internet is shared in LAN network.(in each of computer I set default Gateway to ip of modem .....)I want to dial my workplace from home and then use of workplace internet or connect to workplace LAN.(such as VPN or Port Forwarding or I don't know...)
I have been having a bit of trouble with networking my two machines to share files and allow printing i have a win 7 laptop and a xp home desktop. I share a net connection via 02 wireless box both systems have wireless i have tried many things
Every time I connect to my home network with iPhone 4 my whole network stops working. Windows 7 is not reporting any problems with connection, nor is my router. I have cable connection with my PC and wireless with my laptop, they both just stop working without any visible reason. Even the iphone i connect with wont work, but of course it says its connected and everything is ok.I tought it was an iOS 5 problem, so I reinstalled it. It worked for an hour then its all back again. I even tried sharing my PC conection so that my iPhone is connected to PC and not directly to router.But that produced the same results.
My Set up at home is as follows: [code] Now according to what I have read I should be able to set the subnet on .2.0 network to a subnet of 254 and this gives me 512 Hosts I believe however my question at this point is how to route between 192.168.1.0 and 192.168.2.0.Or when I set the subnet .254 does the router just route it automatically.I would still set the subnet mask on both networks to 254 correct? I believe I can only use 192.168.0.1 to 192.168.1.255 w/.254 subnet mask. However I already have some servers that are configured with applications (On the 192.168.2.0 network) that I do not want to change ips on because it would be a pain to reconfigure so, my other question is other than using .252 to extend it to 192.168.0.1 to 192.168.3.255, (I need the 192.168.2.0) is there anything I can do? Like use 192.168.1.0 with subnet mask of 255.255.254.0 to get the 192.168.2.0 network? The reason I asked is I was using a subnet calculator to try and figure this out but every time I put in 192.168.1.0 with .254 subnet mask it changed the ip to 192.168.0.1 to 192. 168. 1. 255.I would really like to use the netgear only. The way I have it now is not working I am able to ping the internet from the 192.168.1.0 network but I can't ping from 192.168.2.0 network to the 192.168.1.0 network.
At the moment I have my home network (192.168.0.0/24) like as below (all connect using straight cables): [code] My Cisco lab equipment are in the basement all connecting to an access server which at the moment is plugged into Switch3-dumb (along with a printer & NAS).What I'm thinking is to replace the Switch3-dumb with a 3550 I'll be picking up later this week.Then using this to do as the Switch3-dumb did maybe by creating a native 'vlan 192' & putting it into a gig interface which will connect to the network using the straight cable, also putting the printer & NAS into the same vlan.This will hopefully still give me connectivity throughout.Then when required I'll like to use the 3550 with the rest of my Cisco equipment for setting up different labs (segmenting them from the home network by using different vlans etc.One of my reasons to implement the 3550 into the home network is to be able to play about on a regular basis (port monitor, traffic stats, etc).
My Wifi network has a wpa2 password that is a random string of characters and numbers and yet last month a rogue IP Address kept popping up on my DNS list. It has to be coming from my neighbor who's bedroom is about 15 feet away from my router. So unless someone is sitting out on my front lawn to do this then it must be him.I've been looking for software that will notify me when a connection my router is attempted and kudos if it also asks my permission first would be great.There are wifi packet sniffers out there like Cain&Abel, Airsnort, that sort of thing but I am not quite savvy enough nor do I want to turn this into a complicated hobby but just need a basic warningin case something gets past my passwords again
I can't connect to the internet. When I double click Local Area Network under Network connections it says it has both sent and received packets. It is set to automatically acquire an ip address. The computer is connected to a router. I can ping 192.168.1.1 but when I try to reach my router's settings it says page can't be loaded. I tried to hook the computer up directly to the modem and connect that way. It said it was connected and it was sending packets but I still couldn't do anything. I've turned off the windows firewall. The computer is Windows XP SP1
I can't connect to the internet. When I double click Local Area Network under Network connections it says it has both sent and received packets. It is set to automatically acquire an ip address. The computer is connected to a router. I can ping 192.168.1.1 but when I try to reach my router's settings it says page can't be loaded. I tried to hook the computer up directly to the modem and connect that way. It said it was connected and it was sending packets but I still couldn't do anything. I've turned off the windows firewall. The computer is Windows XP SP1.
More info: ip config /all netstat -n ping&tracert 192.168.1.1
After trying most things and spending money like water, I still cannot get our home network to be adequate and I am out of options - Tried using two 100MBit/s Netgear routers "bouncing" signal to each other (Wireless Repeating Function). Not ideal as security is small and speed was slow (<10MBit/s) but at least it worked. However these routers had to get pensioned off when we put gigabit ethernet in the office - and the Netgear replacements (a) still have the security limitations with wireless repeating, (b) anyway see to do a worse job of repeating. Tried buying Netgear directional high-gain antennas and directing the signal point to point to a second router - didn't work at all. Tried Powerline (this was in 2008). It sort-of worked but was unreliable and dog slow. I think this is probably not worked by the fact that this building is OLD, most of the wiring is OLD, and anyway the electrical path would take the signal from the 4th floor, down some very old wiring to the ground floor, across a very old switchboard, and back up to the second floor... it's not quite the same as a modern house with modern wiring. Most recently tried using Netgear's Wireless Network Extender. Again, it sort of works, but it's NOT fast at all. In addition there are times when some of our computers using the extension segment of the network are unable to connect - they can still see 3-4 bars of signal, but they cannot get on the network. Appears to be an issue relating to gateway, or DNS, not sure. But I would say about 1 day in 3, when I come home, my wife tells me that the "internet is off".
My home network consists of a Linksys WRT54GL router running DD-WRT supplying wired access to my desktop, a bridge to another WRT54GL (also running DD-WRT) to provide a wired connection to a XBOX upstairs, and wireless access to about 5 or 6 different devices including several laptops, an iPad, and an iPod touch. My question is this:
I am adding a 22" TV into my office so I can watch TV while working on my desktop. I only have one cable jack in my office which is currently plugged straight into my cable modem. This means I'll have to use a splitter to give both my TV and modem cable access. How much signal degradation or speed do I stand to lose or should expect to lose?