Protocols / Routing :: Partition Departmental IP Network Address Block To Create Staff / Student Subnet?

Sep 28, 2011

partition the departmental IP network address block to create a staff and a student subnet. Each of these will be identified by its own network address and netmask. It is university policy that you must be economical with the IP addresses. That is, the subnets must be as small as possible, but they must be large enough to accommodate the maximum number of hosts you were given. Also, it is university policy that the respective gateway router to the outside world should always be given the highest possible host IP address in the subnet. The student subnet should have a higher IP network address than the staff subnet. The network must be able to support up to 60 machines on the staff subnet (not counting the router) and up to 120 machines on the student subnet (also not counting the router).

IP address/netmask
University network address127.158.128.0
University network mask255.255.192.0
University internet gateway IP address127.158.191.254
Department network mask255.255.254.0
Department router address127.158.129.254

Suppose that the network address of the departmental network is (calculated by AND between Dep network mask and Dep router address)I know that 60 machines would use 6 bits for the staff subnet.the netmask of staff would be can I figure out the the IP network address of the staff subnet.I have worked out the range for the staff subnetwork. - = Gateway address = Broadcast address

Now how can I calculate the IP network address of the staff subnet?

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Protocols / Routing :: Wireless Network Doesn't Have An Valid IP Address?

Apr 5, 2013

giving unauthorized access and no internet access

Windows IP Configuration
Host Name . . . . . . . . . . . . : KHANBALOCH-PC
Primary Dns Suffix . . . . . . . :


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Protocols / Routing :: How To Check External Subnet

Sep 25, 2012

I have to get a list of external subnet's and external IP's for several properties so that the web based time card software can restrict access.I can get external IP easy, but I don't see an easy way to get the subnet. Is the only way to do this by contacting comcast/att at for each location and check with them?

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Protocols / Routing :: Access Secondary Subnet From Remote Location?

Apr 12, 2011

Main Site allows communication from Remote Site via VPN to Windows ServerMain Site also has a secondary subnet that communicates ONLY through internet but NOT to the Windows Server.Sonicwall 192.168.168.x is main siteRemote Site is 192.168.0.x connecting to Main Site to access shared folders on serverSecondary subnet at Main Site is 192.168.0.x using Windows XP PC's. They are accessing a linux server at which Main Site has no access to.VPN remote ip's are 192.168.0.x - they can successfully access the Windows Server at BUT NOT Want to connect Remote Site to Secondary subnetWilling to make router changes or whatever is necessary to get Remote Site to access Secondary Subnet with the only exception that the Secondary Subnet REMAINS.VPN DHCP is turned off but willing to turn it on.Willing to make the Linux Server 'discoverable' on the Windows Server. Don't know linux at all but another co-worker set it up and can make changes.

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Linksys Wireless Router :: E2000 WAN IP Address Cannot Be Same Subnet As Guest Network IP Address

Jul 16, 2011

I switched from Time Capsule with AirPort to E2000 and have a problem with configuration.I use the same IPs as in AirPort and E2000 gives me an error:"The WAN IP address cannot be the same subnet as the Guest Network IP address" and I can't save configuration.But in my opinion they are different.I use "Static IP" option and I have IPs from my ISP: [code] So WAN IP is different subnet as LAN and I don't know what to do now. It worked with these settings in AirPort and here I can't proceed.

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Cisco Switching/Routing :: ASA 5510 Connectivity - Rule To Block Protocols

Nov 29, 2012

I've configured an ASA 5510 FW with asa901-k8 ios. on it's "inside" port there is network. there is another network ( in my system that can be reached via another router which has ip address. when a client in the 10.90 network wants to reach the 10.190 network the fw redirects the request to the router ( because the fw is my gateway. there is no problem so far... but... while i can ping and traceroute a 10.190... user from 10.90... network, i can't use any non-icmp appliactions. for example i can't use rdp programs, http web interfaces of some devices on remote network ( what can cause that? is there any rule in asa that blocks these protocols?

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Cisco WAN :: WRVS4400N - Setup VLAN For School Network For Student IPads / IPods?

Jul 10, 2011

I work at a small private school that is going to implement about 20 ipads for classes. Students bring their ipods and iphones and are connecting to the existing unsecured wireless access points and are taking up the remaining IP addresses in the DHCP scope. I am running out of IP addresses and was wondering if I could set up a VLAN using the Cisco WRVS4400N for all of these wireless devices the students will be using. I plan to pull out all unsecured wireless AP's and replace with what ever solution we come up with. I will need about 6 access points/routers to cover the entire school. There is not a lot of money for technology and the ipods were donated. I have never set up a VLAN before. Is there an inexpensive way to allow the students with their personal ipads/ipods and the 20 ipads owned by the school to connect to a VLAN to keep from using up our DHCP IP addresses from the server.

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Home Network :: Ip Address In Same Subnet?

Nov 20, 2012

i want to give my switch a ip address with same subnet as a pc which is for eg having ip address of class a and subnet of

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Protocols / Routing :: Not Acquiring Ip Address

Jun 9, 2011

I have a dell laptop. It will pick up and connect to the neighbors wifi. But when trying to connect to mine it will not acquire a network address. It continuously searches but says 0.0.0... it says the signal is excellent but will just not acquire the ip address. By the way, cell phones with Wifi connect to this network with no problems.

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Protocols / Routing :: Can You Change Your IP Address

Sep 17, 2011

So I want to watch some videos on, but for some reason I have been IP blocked. I actually went on their support forums and the guy basically said "I picked up a bad IP address", so I didn't do anything wrong, I just got unlucky.

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Protocols / Routing :: Keeping Log Of Own IP Address?

Feb 16, 2012

Keep a log of my own (Wan) IP-adress. It should look up my own IP-address and write it away to a log, so that I can look up a few weeks or months later what my IP-adress was on a certain day. I am using a router at home.

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Block A Mac Address From Home Network?

Dec 16, 2012

How to block a mac address from my home network?

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Protocols / Routing :: IP Address For AT&T Router 2701HG-B?

Sep 18, 2011

Have tried and and both time out.I need to connect two laptops to the wireless and need the pass code.

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Protocols / Routing :: Can't Find Unit Ip Address?

Mar 21, 2011

I'm working on a CCTV DVR which has network viewing function. The front controls on the DVR won't work at all so i am unable to access any menus or burn off the footage i need. I was hoping to connect to the unit via the network viewer software or web browser but i have no idea what the ip address is. Is there any way of finding out the ip address of the unit if i connect a pc to it via a cross over cable or through a switch or am i stuck because i dont know the ip range it is in?

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Protocols / Routing :: How To Calculate Broadcast Address

Apr 27, 2012

How can know the Broadcast address before subnetting? I know how to calculate the broadcast address , but don't understand 'Broadcast address before subnetting'?

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Protocols / Routing :: Any Way To Get IP Assigned To Physical Address?

Apr 12, 2012

Is there any way to get an ip address through it's physical location? I was asked this by a friend and it's a good question. We know how to get the physical address by it's by coordinates, but is it possible to reverse it, getting the ip assigned to the physical address?

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Protocols / Routing :: Cisco 1841 - Cannot Use Public IP Address

Jun 5, 2012

Am having an issue with my cisco 1841. I recently brought some IP Publics. Now that i need them i just can't use them, I don't know much about routers but till now have successfully manage to do some stuffs with the router after googling ,OK we already have some other ip publics and when i look at the config file i can see something like this:

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Protocols / Routing :: Change Assigned External Ip Address?

Mar 30, 2011

How can I change my external IP address which is assigned

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Protocols / Routing :: Switch Shows Up Router With IP Address

Nov 21, 2012

i got a d-link router comming off modum and then a lynksys switch . well when i run the lorex program it (the switch) shows up as a router with a ip address ? i have tried a different swith but still the same thing happens .

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Protocols / Routing :: Internet Does Not Work After Changing IP Address

Jul 15, 2012

well i had the same problem because i got bored and i was like hmm i wonder if i can change my IP and i tried it and i had the same problem but when i did system restore it still did not work, now i have to get a new operateing system...

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Protocols / Routing :: SR 5500 - Finding IP Address Of A Device?

Nov 15, 2011

Okay so currently in my possession is a SR 5500 wireless channel receiver with a problem.. We need to find its current ip address it also is not a standard ip address such as it has a standard ethernet port and of course GPIB ports

I'm looking to know if there is a way I can find its ip address by maybe with a crossover cable, or by bridging its connection to my computer and somehow seeing what ip it's requesting.

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Protocols / Routing :: Determine Country From Email Address?

Nov 8, 2012

I have a list of email addresses, people who have subscribed to a free electronic newsletter. The email address is all the information we have about each subscriber.A satellite office is going to begin handling print and electronic subscriptions for subscribers in Peru. Is there any way to determine which of these email addresses are from Peru?

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Protocols / Routing :: Change Ip Address Without Changing Internet Connection?

Jun 11, 2011

How i can change my ip address without changing my internet connection??

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How To Connect 2 Routers LAN - WAN And Create Subnet

Sep 8, 2012

I'm trying to connect two routers and create a subnet but failing due to a little knowledge but no real understanding! I've read the ultimate setup thread loads of times but can't get my setup to work.

Here's the setup I'm trying to build:

Internet -> Master ADSL modem/router (No NAT, no DHCP) -> Slave cable router (NAT, DHCP)

I want to connect 3 Xboxes to the master router with external IPs to avoid the whole "moderate/strict" NAT nightmare. Then I'll connect everything else (PCs, Macs, wireless devices etc) to the Slave router which will assign IP addresses and do the NAT thing. Both routers are Netgear N150s (master is ADSL, slave is Cable).

Here's what I've tried so far:

Master router:

All IP addresses supplied by ISP
Internet IP: xxx.68.160.143
DNS: and
Router IP: xxx.68.160.142


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Cisco Routers :: RV220W Can't Create Subnet

Nov 8, 2012

I'm trying to setup this router with my IP range to but if I try to enter a subnet mask other than I get the error - Invalid subnet mask. It should be 255 for given class of IP address at
Every other device on my network allows that subnet mask, why not this router, it's stopping access from my 192.168.101.x devices.

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Cisco Firewall :: Create Static PAT To Allow Host Address To Access Network Through ASA5510

Aug 23, 2012

The old syntax that I am much more familiar with has been deprecated.  On older IOS it would have been something like static (inside,outside) tcp 14033 1433 netmask  Plus an extended ACL to allow the traffic.I am trying to create a Static PAT to allow a host address to access our Network through an ASA.  I have external address that I want to hit the external interface on an obscure port (say 14033) and translate that traffic to an internal host address on  port 1433.

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Cisco Wireless :: WLC 5508 / Cannot Create Interface As Same Vlan Id And Subnet

Aug 12, 2012

I have got a wireless project with WLC  main office and have 10 sites where ap's are there and ap's getting registerd .we need 4 ssid in all branches same .

ssid guest
ssid scanner
ssid user
vlan 600 main office for scanner
in branch
vlan 600 for scanner but ip is

and bgp is running . And customer is asking me not to edit the ip range or vlan or create new vlan . but in wlc am not able to create branch network range interface and vlan 600 as vlan 600 i already created for scanner main office So is there a way to do that .
Temprarly one site i did like created vlan 610 in branch no ip . And in main office interface vlan 610 given another ip range . and i created interface in wlc . from branch i can connect the ssid and getting ip . But they dont want to create any aditional vlan or another network . Customer dont have a smartnet contract . They recently baught 2 wlc 5508 and 40 ap 1142.

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Cisco Switching/Routing :: How To Block Single Mac Address In 3550 Switch

Nov 16, 2011

I need to block this mac address in  my 3550 switch.i enable port security but this mac address comes and do the violation and port is shut down.

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Home Network :: Partition Hard Disk After Installing Windows OS?

Jul 12, 2011

Is it possible to partition the hard disk after installing the Windows OS?

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Cisco Switching/Routing :: 1841 Need To Block MAC Address / Applied Command Access-list

Sep 4, 2012

I am using cisco 1841 LAN router, I need to block MAC address i have applied the command access-list 1102 deny 0000.0000.0000.0000 mac address..... but it does not work.

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Cisco Switching/Routing :: 3750 Switch Stack Partition

Jan 6, 2013

In the current set up I have a LAN stack of 5 3750 switches configured as an access stack. As per the requirement I need to partition the current 5 switch stack into two individual stacks of 3 & 2 switches respectively. Kindly let me know the step by step process withh all the necessary commands, reloads and reconnections. I purpose to do it by changing the priority of current member switch to 15 so that its elected as Master in the new partitioned switch stack. But not sure what all steps required and in which order.

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D-Link DIR-600 :: Block Incoming Traffic / How To Create Rule Source

Jun 23, 2011

I need to block incoming traffic with Dlink DIR 600. I know how to create the rule source (WAN) to destination (LAN)  to deny all protocols. But what IP will I put in WAN? IP address of my Internet? Or how can I enter the ALL IP range in source...format for the IP (it's not

I want to do this because in the DIR log section I'm being PING Flooded.  I already un-check "Enable WAN Ping Response" but still receiving the message.

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D-Link DIR-655 :: Create Firewall Rule To Block All DNS Requests Except To Specific Servers

Mar 3, 2011

Using a DIR-655, does anybody know how to create a firewall rule to block all dns requests except to specific servers?

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