How To Prevent Network From Accessing Another One By Iptable

Nov 29, 2012

how to prevent one network fro accessing another network by iptable

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Prevent A Certain Host On LAN1 From Accessing A Server On LAN2?

Mar 17, 2011

I am having some trouble understanding extended control lists. I am trying to prevent a certain host on LAN1 from accessing a server on LAN2, while still allowing the host access to the rest of LAN2.This is what I thought the command should be:

access-list 100 deny ip 175.16.1.2 0.0.0.0 175.17.2.2 0.0.0.0

My understanding was that:

Green = source & mask
Red = destination & mask

However this seems to stop all my other hosts on LAN1 from pinging the server also.

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Linksys Cable / DSL :: DPQ3925 / Setup User Access For Kids To Prevent Net Accessing?

Feb 4, 2011

i have a cisco DPQ3925 , im trying to setup user access for my kids to prevent them from accessing the net , i have set up the time of day and the user setup , but cant get it so u have to logon with the set user names to access the net. 

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How To Prevent Network Monitoring

Feb 21, 2012

I live in a shared flat. And all 20 rooms are connected to this switch I believe. Is there any method to prevent the landlord/tech guy monitoring our internet activity (e.g. bandwidith activity, websites we looked at, etc.

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HL 2270 Dw - Prevent Printer Installation Over Network

Aug 18, 2012

My wife is moving into an apartment complex for school and she has a Brother HL-2270DW printer. Since she only has a laptop and moves around the apartment, I would like to use the wireless on the printer. Unfortunately, the internet for the building is just through wireless APs. I have the printer installed on the network, but my concern is that anyone can just search for network printers and install it. While printing on it won't be useful for them, it could be a good way to waste her paper/toner. Is there a way to prevent users from installing it without being able to change the router settings? I did not see any option in the web configuration.

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Home Network :: Prevent Multicast From Flooding Wifi?

Apr 12, 2011

My IPTV connection works fine so far but as soon as I start watching TV I can't use my WiFi connection anymore. My router is an "Alice Modem 1121" (SIEMENS S1621-Z220-A) with 4 LAN ports and a WiFi interface (4th LAN port provides the IPTV). It is directly connected by wire to my PC's ethernet card for the IPTV and the internet is provided via the WiFi. When I activate the LAN connection the WiFi and internet connction stays up and requests can be sent but nothing returns anymore. Another device (iPod) has no problems with accessing the internet while IPTV is in use. I also have a Netgear WNR1000v3 router which I tried to use as AP instead but it's exactly the same problem. Unlucky the Netgear router is not supported to use dd-wrt firmware yet (I've found a step by step guide to prevent multicast floods with dd-wrt/ebtables). But maybe the Alice Modem can handle this problem on its own. I read some stuff about VLANs and splitting them but I have no clue how that would look like.

The "nas_0_1_34" is for the IPTV.

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Cisco Switching/Routing :: 2960 Way To Prevent Network From MACflap

Feb 1, 2013

i just need to know is is there any way to prevent network from MACflap.The best way will be when switch will disable the interface where the macflap was detected.I need to set this security feature on 2960s.

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Cisco Switching/Routing :: 4500 How To Prevent Users With Static IP To Connect Network

May 14, 2012

is it possible to prevent the users with static IP's to connect the Network?We use Cisco sw 4500 series as an access and distribution switches.Is there any features on the switches that fit my request?

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Home Network :: Is Blocking Echo Request To Prevent Ping Sweep Same As Having Firewall In Stealth Mode

Jul 19, 2011

Is blocking echo request to prevent ping sweep the same as having a firewall in stealth mode? And how could someone ping sweep from outside if you had a firewall at all?

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Accessing Router Based Network Storage From Outside Network?

Mar 9, 2011

I am wondering if all routers that have a USB port to which network storage can be attached, support the functionality to enable that storage to be accessed from outside the network. If this is true how (in a conceptual sense) can the router be configured to do this and what are the security implications?

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Accessing Network Drive From Behind Sub-network Router?

Jun 17, 2011

I am connecting the router to a corporate network that assigns "real" IP to it (DHCP). Then I have 3 computers connecting to this router (local IP 192.168.1.2-4).Assuming I want to access a network drive named "ADrive" (on the same corporate LAN) from any of those 3 PCs, how do I do it? ("\ADrive" does not work, neither does replacing the network drive name with its IP, cannot ping either - it's like I'm on a totally separate network).

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Accessing Network Folders?

May 22, 2011

Q1/ I have 2 WinXP laptops on the network. One is WinXP Pro and one is WinXP HomeIn My Network Places of WinXP Home, it can see the WinXP Pro. In WinXP Pro, I have to do a search of the WinXP Home computer in order to detect its existence. WhyQ2/ In both systems, when I tried to access the other computer, a popup screen asked for password. I keyed in the proper password, but I cannot access the computer on the network. I repeatedly keying in the password but had the same result. I turned off the firewall on both systems. Same problem existed. On both systems, "File and Printer Sharing" are enabled in the Firewall exception. And on both systems, I can ping the other system without any problem

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Accessing Network Computers LAN

Jun 1, 2011

I have 2 computers connected in a LAN. I want to access the other computer through the main one.I do have shared folders (homegroup), but I would like to know how I can get complete access to the other computer via command prompt maybe?

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Cisco :: Accessing Inside PAT From DMZ Network?

Aug 3, 2011

Setup as follows:

Cisco ASA 5510
Inside 172.17.101.249
outside 5.5.5.2
DMZ 192.168.100.1

I have an internal server 172.16.1.202 that is PAT to 5.5.5.103 to allow RDP connections. - This works fine from the internet.I have now been asked to allow our guest wireless (192.168.100.0/24 - DMZ) to access this same external connection.We have 2 cisco controllers, with the guest controller "anchored" in the DMZ.I cannot get this to work.Both the DMZ and inside NAT their internet connections to 5.5.5.2.

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Accessing Printer Through Wireless Network?

Nov 16, 2011

have a home network and access it thru an ATT wireless router. I also have a wireless printer but unable to access it vis the network. I ran ipconfig. I can see ip address for the router, ie, the Ethernet adapter wireless network connections: IP add, Submask, Default, DHCP Class Id. I also see 'Media State....Media Disconnected' Could this affect not having access to the wireless printer?

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D-Link DIR-655 :: How To Block Particular IP From Accessing Network

May 30, 2011

How do I block a particular IP from accessing my network entirely?  I have a hacker with a known IP I want to shut out.  I tried creating a DENY inbound filter (with just that IP as the range) but that didn't seem to work.  that hacker kept being able to attempt logins.

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D-Link DIR-825 :: Accessing USB Port Outside Of Network?

Aug 22, 2012

If possible I would like to have access to my external hard drive from outside of my network.While in the network my laptop connects to the Hard Drive using the shareport. If I take the laptop with me then I would also have to take the External Drive with me.

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Accessing Secure Sites On Home Network Only?

Mar 28, 2012

I can not access Windows Live Messenger, it will not connect. I can visithotmail.com but not delete or send any e-mails. It says Hotmail is not responding.I can also not access Windows Update. When I search for updates it comes back with error 80072EE2. I also have problems accessing secure websites where I need to pay for something, e-Bay, paypal, make payments off Credit Cards etc.However I can access all websites on my iPhone over the same Wi-Fi. I took the same laptop to 2 other addresses and it works fine at both and able to access all webpages etc!I am running Windows 7 and have tried IE, Safari and Firefox, all with same problems. I am with o2 home broadband and have been with them for years with no problems. I have replaced the router, and have another new router on the way, but am expecting the same problems!

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Dual Nics For Accessing Network And Dedicated NAS?

Nov 24, 2011

I'm trying to setup a server with two nics, one of which is connected to the network, and the other connected to a NAS via crossover. I've never done anything with subnetting, but I was thinking I could just set the main nic to 192.168.10.20 with a subnet of 255.255.255.0 and the other to 192.168.10.250 with a subnet of 255.255.255.240 and the nas nic set to 192.168.10.251

Am I thinking through this right, or is there a better way to do this?

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Unwanted Computer Is Accessing Home Network

Apr 7, 2012

i have an unknown pc accessing my home network. How do I delete/remove this pc

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D-Link DIR-655 :: Accessing The Router Via The Guest Network

Feb 1, 2011

Is there any way to access the router's configuration pages (192.168.0.1) via the Guest wireless network when routing between the zones is disabled?

Here's the story:

I am using my landlords wireless internet, but I administer the router myself. The router is 'upstairs' and i am 'downstairs' and he has his computer plugged into it plus one wireless laptop. He knows nothing about computers and is vulnerable to downloading viruses (and other ****) and I don't want my computers to be on the same 'network' as his.

I had a brilliant idea that since I am 100% wireless, I can make a guest network, put all my computers on that network and disable routing between them. Now all of my computers (some connected through a wireless bridge) can not see his computers at all (perfect!). The only problem now is I can no longer access the router config pages at 192.168.0.1!

Is there any way I can segregate my computers from his and also access the router config? I've tried  accessing the WAN IP for the remote admin pages from inside the NAT, but it still blocks it.

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Home Network :: Accessing File Share On Wifi?

Sep 10, 2012

we have a router with voip phones but no wifi, so i installed a separate wifi router but its ip is 192 range while the LAN is 10.1.1x range, how can i set it up so wirelessley connected PC's have access the file share and internet?

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Getting (general Network Error) While Accessing Application From Server

Feb 23, 2011

i'm getting "general network error" while accessing application from server..

client machine: Windows 7

server machine: Windows 2008 server

Switch : 24 port unmanaged D-Link switch ..

network cable: CAT-5 cable.

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Linksys Wireless Router :: Accessing Wrt320n Across Network?

Aug 7, 2011

I've got the below setup, have the wrt320 setup as a switch / wifi ap, i'm totally unable to access its management page from pc1 but am able to via pc 3, why is this, how can i get around this? Routing? Also am unable to access pc3's resources from pc1..When i enter the ip of the wrt320 it thinks about it and before it has come up with the user/password screen but it soon dissapears and firefox comes up with a "Unable to connect  Firefox can't establish a connection to the server at 192.168.0.2." message.

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D-Link DIR-615 :: Number Of Wireless Devices Accessing Network

Jul 15, 2012

Just upgraded my system.  I am using D-Link 615 as access point hardwired LAN to LAN to ActiveTec MI424WR N capable Verizon Fios Wireless Modem/Router.  The Fios Router is set up with WPA2 security. Intend on having three 615s as Access Points off of ActiveTec.  Have a number of wireless devices accessing the network.  Have followed instructions from manual to use 615 as Access Point, disabling UPnP and the DNCP Server function on the 615.  My ActiveTec IP address is 192.168.1.1 and I changed the 615 to 192.168.1.50.  I can type this IP address in my browser and get to the 615 set-up.

I have tried a couple different options in naming the SSID on the 615 set-up.  If I name the SSID on the 615 the same as the ActiveTec router, when I go to Connect to a wireless signal where there is overlap, there are two signals that one can connect to, named the same SSID, the Fios is WPA2 secured and the 615 is not.  Shouldn't these all be on one SSID?  It seems that I have two different networks (different SSIDs) instead of one (rather than the 615 simply serving as an extension of the Fios router as a wired remote  access point) with different security protocols (WPA2 and None).  The SSID name almost seems meaningless.  If I name the 615 SSID the same as the Fios router SSID or something different, I still have the option of selecting one SSID that is secure and one that isn't.  If I try to connect to the SSID name associated with the 615 I can get on without providing a password.How do I make it so that one can walk around and go from one area to the next and seamlessly move to the best signal?  I did read to select different sets of channels for each access point.

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D-Link DIR-655 :: Difficulties Accessing UPnP Services In Network

May 17, 2011

I recently upgraded from Linksys WRT54G to D-Link DIR-655 firmware version 2.0. All the features are working as advertised however i am having difficulties accessing UPnP services in my network.  I have a Samsung 55" internet enabled TV connected to the router and also have few devices that can stream over UPnP to the TV.  The option to enable the UPnP is enabled in the router configuration however its not finding devices in the network ... comparing that with Linksys ... all i had to do is enable the UPnP and all my devices discovered each other and started streaming without any issue.  What do i need to do in D-Link to enable the UPnP devices ...

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Cisco Firewall :: Accessing SMTP From Outside Network Through ASA 5510?

Oct 11, 2012

I have an issue with my mail server(SME Server) which is behind a Cisco ASA 5500(firewall)  problem is that if one leaves my network they can receive but can not  send email via my SMTP also internal people can only send if they use  the IP address of the server rather than the domain [URL]

here is my layout
 
ISP - ASA 5510 - LAN (includes mailserver)

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Cisco WAN :: 5505 Accessing Web Servers On Inside Network

Jul 5, 2011

Got a problem accessing our webservers on the inside interface from other clients on the inside interface on our ASA 5505.As in, they type in url... in their browser, and it wont work.
 
However, if we use a PC on another outside network, it works just fine! [code]

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Inter Vlan Routing ASA 5505 - Accessing File Server From Second Network

Apr 24, 2013

I have a Cisco ASA 5505 with the base License. I want to split my network and add a new Internet Access, the first network in Orange works fine. My question is how can i access the file server from the second network (192.168.X.0 /24) ? The 3 switches are Cisco SF300-24P.

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Linksys Wireless Router :: Remotely Accessing Office Network Connected To E1000

Jun 13, 2011

I'm the IT Manager for a Small Non-Profit Organization(facilitating build homes, giving education, health care for the poor).All computers are connected to a network through a Linksys E1000 Wifi Router and I would like to access all computers remotely especially when I'm on my site visits or when I'm not in the office. Is there a way for me to join the network even if I'm outside the office.

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To Prevent Being Hacked From The Internet

Apr 9, 2012

I share my internet connection with my roommate who is very tech savvy. I found out yesterday that he has been hacking into my gmail account and reading my emails. I didn't think it was quite possible and I'm very surprised. He manages the internet connection and has full access/control over it.what can I do to prevent him from accessing my information?

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Prevent Neighbour From Using Wifi?

Sep 2, 2011

I have high speed wifi at home and the wifi is WPA-PSK protected. My neighbour will be coming to my home to work with me and I will be keying my wifi password into his Windows XP laptop for him to access my wifi.

This is one time access only, after that he is not allowed to access my wifi. To prevent him from accessing my wifi, I will have to delete the password that I keyed into his laptop.

Where do I find this wifi password in the Windows XP? What folder and what filename?

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How To Prevent Same Ip Address Range Conflict

Aug 5, 2011

I'm trying to perform ping to another network segment using nat to those devices but the ipaddress i assigned are the same as the segment i am trying to monitor is there anyway to overcome this?

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