Home Network :: Subnetting A Single Static Ip?
Jun 18, 2012
I am in the process of acquiring a static ip address from my isp time Warner. I only want to pay for a single static, but I have a number of machines I want to put on the internet, a web server and a e-mail-server. Using a cisco router, a Cisco Rv 120w. Can I assign the static ip address my isp gave me to the Rv 120w and then crate a vlan to assign addresses to various computers. Or is this something my ISP does. I get the impression from the tech guy at Time Warner that this is something they do.
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Jul 3, 2011
I have 2 internet services with separate ISPs. My local telephone exchange is somewhat dated so the maximum speed per ISP/connection is about 1 Gbps. I have streaming radio services, I do quite a bit of file downloading and there multiple devices currently trying to share a single connection. I haven't been able to utilise the second connection because my NAS and print serving is all configured on the first connection and therefore unavailable to users/services on the second connection.My goal is to utilise the available capacity of both connections but at the same time allowing all network resources (file and printer sharing, NAS drives, etc.) to be available jointly to all network clients.
My first router is a Netgear RangeMax ADSL modem/wireless router (DG834PN). This connects directly to one ISP and has the NAS and printers attached. The second router is a Netgear N600 wireless dual band router (WNDR3400) which attaches to a Linksys ADSL 2 Gateway with 4-port switch (AG241 v2) and then to the second ISP.As an aside, I also have a number of Devolo devices for utilising the electrical circuit for networking purposes. I have a dLAN 200 AVmini adapter connected to the RangeMax router with 2 further dLAN 200 AVmini adapters and a dLAN 200 AV wireless N adapter distributed through my house.
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Jun 23, 2011
What I'm trying to go for is to make a Static IP so that I can forward my ports in order to play certain games. I have had my ports forwarded at one time with a different ISP (in the same area), however they used cable and the company I'm with now uses DSL. The company "Hawaiian Telcom" has provided me with a Motorola 2210 modem/router. I have had trouble trying to create a static IP with this router so (sorry if this was a stupid move) I decided to buy a linksys router to try to port forward with that. When my ports were forwarded with the previous ISP I was using a linksys router then. The now aged linksys router was replaced due to it getting wet, but that's besides the point
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May 28, 2012
For numerous reasons, I want to bind my DHCP clients to static IP addresses, but can't figure out how to do it in DD-WRT.
I've googled, but every link I click times out (for this specific search- my uplink is otherwise fine).
I know I can do it with hardcoded IPs, I'm just curious how static DHCP is done (and yes I am aware that Static is a contradiction in terms of DHCP. I want a given MAC to always get the same IP) and would like to have some info on this.
(call this reserved DHCP if you prefer... )
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May 28, 2012
So I have AT&T U-verse and am teaching myself networking and am wanting to mess around in creating my home network and set up static IPs for my devices. I know how to set them up, but I guess AT&T is saying that they have to allocate the static IPs....pretty much they are saying I have to pay them so they can say ok I can use the IP addresses from xxx-xxx-x-10 to and then depnding on how many I want to have depends on how much I pay. This makes no sense to me. Why should I have to pay my ISP for static IP address, from my understanding those are things
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Jan 11, 2012
Given the IP address of 172.16.10.22 and the network mask of 255.255.255.240... answer the following:
What is the network address?
What is the broadcast address?
What is the valid host IP range?
What I have done so far:
Part 1 - Broadcast address
172.16.10.22 - 10101100.00010000.00001010.00010110
255.255.255.240 - 11111111.11111111.11111111.11110000
Researching different ways to find the Broadcast address I took the binary IP address and replaced all numbers with 1's for the host bits identified in the subnet mask and came up with:
172.16.10.31 - 10101100.00010000.00001010.00011111
Is that the correct Broadcast address?
Part 2 - Network address
I am not sure what is meant by the network address and all my research has come up with either MAC addresses (obviously wrong) or CIDR notation...How do I calculate the network address?
Part 3 - List of valid IP's
Using the same address 172.16.10.22/28 I did the following:
28 is closest to 32 (block wise) so 32 - 28 = 4... 2 ^ 4 = 16 (block size)
IP address listing:
172.16.0.0
172.16.16.0
172.16.32.0
172.16.48.0
172.16.64.0
and so on...
The IP address in question is 172.16.10.22 and falls in the 172.16.0.0 - 172.16.15.0 block...
Is this the correct list of valid IPs?
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Oct 17, 2012
We have a NETGEAR ProSafe™ 802.11g Wireless VPN Firewall FVG318 set up at work with a static IP so we can do a Voice Over IP from our sales office.Everything works fine until I plug in a computer that is connected to our digital printer, then the PC stays on the internet for a while, then crashes the connection.Once I plug in the PC to the network, the rest of the network has issues.
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Jul 2, 2011
I'm connected through a simple non-configurable switch to a 172.20.0.0. 255.255.0.0 network, with a gateway of 172.20.2.2.
When i use DHCP, i am able to connect to the web.
When i change my ip address to a static address (with an available ip address and correct subnet mask and default gateway) i am unable to connect to the web.
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Mar 24, 2011
In my router I can set rule that all traffic incoming to router's extAddr:8888, is forwarded to my intAddr:8888. But I also need reverse rule that packets originating from intAddr:8888 are translated to extAddr:8888. Can I do that? What technique can I search on google to find more information, because it is not port forwarding. I would calll it reverse port forwarding or static port address translation, but I do not find anything useful in internet searching these keywords.
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Nov 7, 2012
I have 5 Static Ip pool all IPs are working fine. I have deploy a IIS Server on Windows2008 and configure the Static IP on that server. earlier it was working fine . but since last month the IP is not pinging from Out Side but internal IP Pool its working. I have checked the SERver firewall and another Setting is Ok. if i changed the Ip from the server the new IP is also not pinging.
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Feb 25, 2012
I have a router manufactured by AirTies,the model is Air 4450.This has the capability of being an Access Point in a current network, which is how I want to use it. (Introducing it into my current Sky Broadband network with a Sagem F@ST 2504N router).However, I cannot access the configuration page whatsoever.The manual states the default IP address of the router is 192.168.2.254, so I have set my laptop to a static IP of 192.168.2.100 and patched into LAN port #1 on the rear of the Airties 4450, powered on the unit and cannot access the router at all.I have held down the reset button several times to no avail.how I can configure this unit ?
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Jan 15, 2013
I've got a server that is connected to the network through one physical ethernet adapter. From my ISP, I got 4 static, public IP adresses, one of which is in use on the Host-Server itself, the remaining three each on a virtualized server. All 4 Servers are running on the same machine.Everything is running smoothly, however, I need to do some Bandwidth Management and Port Mapping, this is why I bought a ZyWall USG20, thinking it would be perfectly capable of doing what I need. is it possible, with a ZyWall USG20, to have all my four IP adresses being forwarded to the one physical machine, and apply some bandwith shaping and port mapping to it?
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Apr 10, 2012
I wanna subnet my Network to increased performanced but im alil confused hereWhen looking at my ROUTER STATUS this is what i have.
INTERNET PORT
IP Address XX.XX.XXX.XX
gateway ip XX.XX.X.X
XX.XXX.XXX.XX
LAN PORT
ip address xxx.xxx.x.x
Which one of this ip addresses do i have to subbnet?,my router is a ,NETGEAR N600 Wireless Dual Band Gigabit ADSL2+ Modem Router DGND3700 Wireless router - 4-port switch (integrated) - EN, Fast EN, Gigabit EN, IEEE 802.11b, IEEE 802.11a, IEEE 802.11g, IEEE 802.11n.
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Jan 24, 2012
how to connect a different ip addressing single system in different place. but we cann't change the ip address in manually
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Jan 28, 2011
This is the situation in our Lab.We have one telephone line with broadband connection and a system which is connected to a modem to use this broadband facility. Recently we have taken two static IPs over this connection for a project work.Now what I want to know is, how to configure these static IPs, so that I can connect two systems (each one to one static IP) to use these static IPs and continue to access the internet in the 3rd (already present) system.
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Apr 16, 2013
I have a customer who wants to do a static mapping in order to prevent any downtime for one of his public web servers. Any good example to follow? FYI, the edge device is:
CISCO1941W-A/K9 (configured as a zone based firewall)C1900 Software (C1900-UNIVERSALK9-M), Version 15.1(1)T
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Sep 20, 2012
I have been using static NAT to map between a single server behind an ASA 5505 and a single public IP address. In other words, I've been doing this:
object network NAT_ME
nat (inside,outside) static interface
Now I would like to start using the clientless VPN feature of the ASA, so I of course don't want that particular port forwarded to the server. Is there a way to define such an exclusion? I've tried several things, including setting up a separate NAT rule to direct that port back to the ASA's interface, without luck.
If that is not possible, what configuration would I need to move to in order to get the behavior that I want? It is important that all (non-VPN) traffic is passed exactly as it arrives at the firewall (whether it is coming from internal or external), with the exception of changing the IP address (i.e., I need static port mappings for some of my services).
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Dec 13, 2011
I am looking a old exercise I did last year about subnetting and I am wondering if is possible to subnet:
198.18.9.1 /22
I wrote down, last year, that:
16 bit are assigned to network
6 to subnet
10 to hosts
when actually I see a class C ip address with 10 bit assigned to hosts. So, how many bit do I have for network, subnet and hosts?
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Dec 8, 2012
I am currently trying to understand Subnetting via CCNA. My progress is going well,I understand the class below:
Class A 0-127 Max IP 2^24 = 16777216
Class B 128-191 Max IP 2^16 = 65536
Class C 192-223 Max IP 2^8 = 256
However I have seen an example from an ip calculator website, and noticed this :
Address: 192.168.1.0 11000000.10101000 .00000001.00000000
Netmask: 255.255.0.0 = 16 11111111.11111111 .00000000.00000000
Wildcard: 0.0.255.255 00000000.00000000 .11111111.11111111
=>
Network: 192.168.0.0/16 11000000.10101000 .00000000.00000000 (Class C) - I would have thought this would have been Class B?
Broadcast: 192.168.255.255 11000000.10101000 .11111111.11111111
HostMin: 192.168.0.1 11000000.10101000 .00000000.00000001
HostMax: 192.168.255.254 11000000.10101000 .11111111.11111110
Hosts/Net: 65534 (Private Internet)
Is this an invalid IP/masks as the max hosts is 65534 (which should be class B?). If so shouldnt the IP address range from 128-191- eg 172.16 (I know that CIDR is the amount of 1's. ).What calculates the class is it the netmask or the range of the first octet?
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Feb 29, 2012
Why isn't it possible to make following configuration:
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Jun 1, 2011
you can subnet to meet the number of networks required, or you can subnet to meet the number of hosts required. In which circumstances would you use either one? or are they both the same? am kinda confused.Is subnetting according to the number of hosts VLSM? and subnetting according to the number of networks required is not VLSM subnetting? Also I'm on CCNA 1 chapter 6, if the other CCNA 2, 3 and 4 has chapters explaining subnetting better cos It's totally confusing me atm.Also, is my understanding correct, when a company wants a LAN made, a network designer see's how many hosts they require in each of their LANS and then chooses an appropriate address class and subnets it? and to connect the LAN to the internet he implements NAT on the router that connects to the internet, and that router translates the internal addressing scheme that was created into a public registered IP address from an ISP? Also does he just make the address up? for example if he decides to use class C, he just picks any random number in the class C range and subnets it?
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Apr 5, 2012
we currently use the ASA 5505 router. We would like to create another subnet inside our LAN because we are running out of IP addresses.
current subnet info:
subnet:10.1.1.X
submark: 255.255.255.0
gateway: 10.1.1.251
we want to make another subnet, which we plan to use for all our network printers for now( other use in the future) PCs at 10.1.1.X will be able to print on the new subnet. the new subnet will be able to connect to the internet.
What's the best options we can do for the subneting? how can we configure the router? is possible to set another DHCP on the new subnet. we currently have one DHCP on the 10.1.1.X
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Feb 24, 2013
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).
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Sep 16, 2012
I have a slew of 106001 messages coming into ASA log, from the outside interface. it appears like most of them are for standard traffic, such as TCP 80/443. i suspect these messages are from clients on the inside who have initiated connections to the internet, but then the client abruptly terminates application of something similar. Server side finally issues a close connection, reset or something else. Here is an example, with the ASA address being 1.1.1.195 (changed to protect the innocent ).
Another theory is that the NAT ip for clients is different than the actual interface IP, so that is behaving differently. For example, once the xlate times out, the IP used for the xlate is no longer active and any return packets to the interface would also error out - be refused. If the xlate was using the interface IP, that it would always respond in some way?
I can bump 106001 down to notification (5) or informational (6) level.
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Oct 20, 2011
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.
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Nov 10, 2011
How to install a wireless network in home environment?
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Jan 14, 2012
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.
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Sep 10, 2011
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."
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Dec 20, 2012
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?
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Oct 3, 2011
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...)
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Sep 20, 2011
I'm currently in the process of buying the new property, which is in the build process and would like to put some cables across 3 floors, which would be connected to the router downstairs.
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Mar 13, 2011
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
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Oct 17, 2011
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.
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