How To Find Hosts On Network
Jul 7, 2011
I need a tool to find all the hosts connected on my network. I need something that will tell me the MAC and host type/name. I ran an IP Address tracker and got all the IPs in use, but that doesn't tell much beyond the IP address. Don't really need to do a full in-depth nmap port scan. My concern about using nmap is it can bog down a router...Although I can't say for sure if there are ways to scale the scan back in nmap so it won't cause any issues?
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May 23, 2012
Do you have any suggest for network scanning software?Something who can find IP address and hosts in the network?
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Mar 4, 2011
I have several Cisco switches connecting our network. Switch N connects to the gateway, Switches Y & Z connect to some hosts. Switch N connects to Y and Y connects to Z. Assume our gateway IP is a Class B address with a netmask of 255.255.254.0 and all the hosts attached on switches Y & Z have static IP addresses assigned to them. This gateway connects to the internet.In addition to this IP address, some of the hosts also have a second IP address assigned to the same NIC. This IP is Class A (10.0.###.###) and have a netmask of 255.255.0.0 A second gateway address is not defined.
The hosts that have 2 IP's bound to their nic, use the 10. address to communicate with each other. (Programs running on the hosts are specifically configured to use 10. address).I have several questions regarding this setup:
1) Assume Host has only 1 IP (Class B) - if the destination is on the same network, does the host system send the packet to the gateway first to find the destination on the network or does the host send a "where are u" packet to the broadcast address to find the destination?
2) Assume Host as 2 IPs (Class A & B) - if the destination is a 10. address, how does the host go about finding it?
Since there is no Gateway defined for the Class A address, does the host simply send out a packet to the broadcast address for the Class A network? or does it go to the gateway defined in the Class B network as it was defined first (i'm assuming primary connection)
3) Assume Switch N's connection to Switch Y is disabled - how will this affect communication between hosts on Switches Y & Z that have a 10. IP trying to share data with each other, using the 10. Address. If the answer is this should not affect it, what additional circumstances are required that may cause the systems with a 10. address to be unable to communicate when the connection from Switch Y to N is terminated?]
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Jul 24, 2011
I have a PC upstairs, let's call it (Peter-PC), my dad has a PC downstairs (Kris-PC) and I just setup a linux home server downstairs as well called (server).Now, Peter-PC is connected through Linksys powerline adapters to the router, and server and Kris-PC are connected directly to the router as well.Peter-PC stays constantly connected to the internet, only until Kris-PC is turned on, then Peter-PC connection goes mental and begins to disconnect, reconnect, can't ping the router. As soon as Kris-PC is turned off,Peter-PC is back to normal.However, if Kris-PC and server are both on, they both operate fine. Seems like Peter-PC is the only unfortunate one.I mean the powerline adapters have been working for over 3 years now, and the Powerline light is flashing meaning they are communicating, I highly doubt it's the adapters.
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Feb 10, 2011
I'm just new with ASA. I'm just self-studying on it. I was tasked to have an ACL that will allow inside hosts to access a specific network. Is there a way on how to know all the inside hosts on the behind ASA so that I can do a "object-group network" on those inside hosts which I think it will look neat.
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May 1, 2011
1. To specify static IPs for components on my network, is it simply a matter of reserving each component in the DHCP Reservations List portion of the Network Settings page?
2. On the same page, in the DHCP Server Settings portion, if Enable DHCP Server : is deselected, does this mean that only the hosts specified in the DHCP Reservations List can access the network? In other words, is access now restricted to these entries?
3. If the DIR-615 is powered OFF, will the above settings, etc. be lost (similar to a reset)?
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Oct 25, 2011
I'm migrating our network objects from our current firewall to a new ASA 5520 configuration. I'm using ASDM 6.4 for configuration.
We have a range of IP addresses for hosts that we need to add to a firewall rule/ACL. In the previous FW software I could create an object that was a range of IP address. For example there is an object called emailservers that is defined as 192.168.2.25-192.168.2.50.
Is there a way to do a similar thing on the ASA 5520?
I can see how to create subnets, but in this case I only have a range of IP addresses, no subnet mask.
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Aug 13, 2012
i am having a problem with my desktop right now, just recently i re-installed Windows7, a clean format... but then i suddenly noticed that i cant connect to the internet, no network adapters are detected on the Network Connections, its empty i looked at the Device Manager and saw a yellow warning on realtek rtl8139/810x family fast ethernet nic, i download the driver using my laptop (wireless connection)... and installed that driver on my desktop pc then checked the device manager once again, but it still has a yellow warning.i dont know what to do anymore, and at the last screenshot theres this error message: This device cannot find enough free resources that it can use. (Code 12) If you want to use this device, you will need to disable one of the other devices on this system.i have two lan cards, one at the motherboard(not in use) and the other PCI-E lan card (tp-link ) ...im just wondering if that Realtek i just installed is the lan driver for the motherboard?
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Nov 19, 2011
how to find the network security key,wireless network
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Dec 9, 2011
How to get into the ip hosts on vista?
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Apr 14, 2013
I know that 255.255.255.255 is the broadcast address to send message to all hosts that are in LAN. what i want here is, i want to send a mail to all hosts using this address.
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Aug 1, 2011
I am working on a Perl script to be ran on our different subnets to see what hosts are down (and make the assumption that if the host is down the IP address is free to be used). This is not being ran on a Linux system, so I can't use grep to filter out everything except down hosts. I know there are modules for Nmap that would make this task easier, but my plan is to install Nmap to our network monitoring server, compile the script for Windows, and have it create the report for what addresses are down. I don't want each person running the script to have to have all the modules installed, etc. Or can you compile the script with the modules in it?
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Jun 7, 2011
We have a modified hosts file on each of the computers here at work. This way we can have multi servers, in multi locations that can all be used by everyone for email & our finance program.However, there is one user who the hosts file keeps disappearing. Over the last 2 days it has disappeared 3 times (at least).The user has ran the symantec corp antivirus (at least a couple of times). All risks found have been quarentined and deleted, ran again and nothing found. Also ran Malwarebytes, which was clean. And ran ComboFix.At this point the hosts file has been fixed after running ComboFix.
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Jan 8, 2013
I am trying to set up a small windows network but am having trouble connecting to my NAS. The set-up is simple: My modem is connected to a wifi router to which notebooks/desktops/smartphones/nas are connected. Internet/network is working fine for wireless and also for computers connected to the router by cable. Assigned IP addresses are in the range of 192.168.0.100 to 192.168.0.199. Now by default the NAS has the address 192.168.1.100. There however it is not available..
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Jan 5, 2012
how do i find my network key to set up another pc
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Dec 26, 2011
My xbox is asking me to enter the wep key for network. where can i find that
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May 9, 2011
How can I recover the network key for this computer and how can I change it?
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Jun 22, 2011
So at my workplace I am unable to find/detect and connect to this network that I just had connected to a few days ago. My fellow colleagues are able to connect to it yet I am not. However I know that my wireless adapter is working because I am able to connect to my home network easily, and can detect other work networks in my office building, in which there are at least 15.
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Oct 18, 2012
I seem to have a problem with my new PC build... it's getting connected to the internet, but it isn't finding the network everything else is using, which has left me more than a bit confused. It seems as though my new PC is on a network all its own (simply called "Network"). Meanwhile, my old machine and my housemate's machine (both running Win7 x64), as well as my Playstation 3, are all connected to the main network, which we named "Ostia."
The router is a Netgear WNR2000v2. It's wireless (though all three desktops and the PS3 are all wired), and we've had no problems connecting anything in the past. This is the only machine that can't get access. I've had friends come over with laptops to play games on several occasions and they've always been able to wirelessly connect to my network, or plug in a wired connection and find it as well. But my new PC doesn't see "Ostia." I can go to Control Panel Network and Internet Network and Sharing Center and click "see full map," and that shows me the full network (Internet, the router, and everything connected to said router). But for whatever reason, I can't seem to get my new machine into the Ostia network.
I've had zero problems with the internet on my new machine otherwise. It connects fine in IE9, Firefox, and Chrome. In Battlefield 3 and other online games, this machine is an absolute terminator, running every game I throw at it on max settings without dropping below 60-70 FPS with no lag of any sort. The only reason this is annoying is because I can't move shared files to and from this machine with the other two PCs.
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Jun 17, 2011
So we have a cisco asa 5505. Once a day now (random times) it will suddenly be unreachable along with the hosts connected. If I console in and ping a host from the asa, suddenly it becomes reachable from the outside world again. My job prohibits me from posting the configuration online.
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Jan 30, 2012
I'm new to this site, fully Microsoft certified but only just getting in cisco and looking to pass my CCNA later this year. Actual commands and general use on Cisco's im quite good at but general networking knowledge on networking (subnetting and network layers) I kinda suck at so will be studying a lot on this side of things[CODE]
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Feb 23, 2011
for network 192.168.7.128/26 what is the first usable host IP address in decimal? What is the last usable host IP address in decimal?
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May 17, 2011
Trying to use the "File Operations" option to import hosts into ACS. I go through the wizard and click "Finish", the pop up goes blank and just hangs there. No errors are generated.
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Nov 13, 2012
Seems like something simple, but can't find on Cisco.com. What are the max SNMP hosts allowed on an ASA 8.2 code? That would be Polls and Traps?
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Feb 13, 2011
bought new computor (mac) have network but need to recover my password to up start my mac
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Mar 3, 2011
Find a wireless network and hit enter and a screen came up and asked for my network key.
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Jan 5, 2012
am following directions but cannot find a network?
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Dec 3, 2011
So here's my situation: up untill last night myWireless Internet was working fine, I came home and it all of a sudden would only connect with limited access? SoNo Internet ect. I left it for the night and wentto sleep, then this morning i come to logon and it wont find networks at all, nothing comes up in network centre and it dosent seem to even be looking for networks?!
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Jun 23, 2012
I am using Thomson moden. Recently when ever I start Skype the moden stop working and is held up, requiring to reset. On trouble shooting : 'Cannot find network adaptors' appears. After resetting work well with all other programmes. Took my coputer to another place and another moden- skype works well.
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Aug 4, 2011
We purchased a new printer which is running on a network where one computer is running Windows 7 and the other Windows XP. The printer cable is connected to the Windows 7 computer. The print function works fine on the Windows 7 but doesn't work on Windows XP. Asking me for a "printer name" and I don't know what to put in that option. When I go to printers and faxes I click on each of the options under shared printers and it still asks for "printer name"?
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Nov 12, 2012
what is a network ID number and how do i find it?
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Sep 18, 2011
im trying to find avilable netwoks but when i try it says non can be found and i cant connect Wirless .
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Jul 2, 2012
I can't find the third computer on my network. All the computers connect to the internet but only the two XP computers show up via my network places. I try to setup an office network on all of the computers to see if it works. I can still only get the XP computers to connect. My main goal is to be able to create a private network to share files between the 3 computers. This is for a small office in a corporate building so it has to be private.The third computer is running on Vista which I don't know how to use at all as I only have win7/xp at my house.
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