Block Subnets or IP Address on connected network

I have a wrt54g2 connected to an existing network. wrt54g2 network = 192.168.1.0, existing network = 192.168.2.0. So the connection is working perfect and both can connect to the internet. And also, the 192.168.1.0 network can see the 192.168.2.0 network which is the problem. Does anyone know if there is a way to block an entire subnet with this router? I want 192.168.1.0 to be able to just pass thru the 192.168.2.0 to get to the internet but block from seeting any other network.
Message Edited by JackDaniels on 02-03-2010 01:37 PM

Thanks guys... @gv unfortunately i cant just swap my routers... its not that easy... its sad to see that this cant be done on this model. It just seems like thats the way of linksys making their money by having to pay for more "feature rich" routers. My final solution was to flash my router with dd-wrt then... create the route to pass thru the network to the internet.. but.... create a firewall rule to block all traffic to the trusted network. Works like a charm. Thanks for your replies.

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I want to be able to totally block the FaceTime functionality in my home network so my 4 kids aren't using the Facetime feature- It was easy for Skype just had to enter the work Skype on my Router Security list- and it denies access. I would like to do this at the router level for FaceTime? Only site I find in init.ess.apple.com - is this the startup site for Facetime? Does anyone know a site I can block, hostname or IP address that the FaceTime application uses? Or which port it connects to?

I would presume so, but it might be worth your while to experiment and play around with different combinations to see if you can block FaceTime while keeping Game Center open. Good luck!

'"Connection Failed" : The server "rrnas01" may not exist or it is unavailable at this time. Check the server name or IP address, check your network connection, and then try again' message

'"Connection Failed" : The server "rrnas01" may not exist or it is unavailable at this time. Check the server name or IP address, check your network connection, and then try again' message keeps displaying whenever I try to open any Adobe CS5 applications (except for Adobe Acrobat Pro). It displays until I click "OK" about 15-20 times or so and then will finally let my program open.
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It may not be possible .. there is a major bug between Mountain Lion and the TC where the TC disk goes off the radar of the computer.
Lion is also affected but not as badly.
7.6.4 seems worse than earlier firmware.. so back to 7.6.1 or 7.5.2 if that is possible.
Obviously that is not a solution for a later Gen5 TC.
Reset to factory after the firmware downgrade. .use all network names that are short, no spaces and pure alphanumeric.
If the TC is the main router set the dhcp to a very short lease time.. eg 30min.. and see how it goes, or try a longer lease like 99days.
I prefer the very short lease but response has been mixed.
Use ethernet not wireless.. ethernet is always more reliable and stable than wireless.
And last .. a nightly electric timer that powers off every night at midnight for 1min.. would not be the first device we have suggested a fix that amounts to beat the unit to the punch by forcing it to reboot since it is unstable.

Netsh does not work to set IP address of "Wireless Network Connection"

On Windows 7 Professional
This set of commands work for configuring the "Local Area Connection"
netsh interface ip set address name="local area connection" static 74.94.87.157 255.255.255.248 74.94.87.158 1
netsh interface ip set dns name="local area connection" static 8.8.8.8
netsh interface ip add dns name="local area connection" 68.87.77.130 index=2
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netsh interface ip set dns name="Wireless Network Connection" static 8.8.8.8
netsh interface ip add dns name="Wireless Network Connection" 68.87.77.130 index=2

I FOUND A SOLUTION
I manually renamed the interface from "Wireless Network Connection" to "Wifi"
Then when I use "WiFi" in the command line, I no longer get the
ELEMENT NOT FOUND error.
I have no idea why renaming the interface works . . as shown on original post above, "set dns name" command worked without the name change, but the "IP set Address" did not work.
Anybody know what this is about ?

Check the server name or IP address, check your network connection, and the

Hi,
I'm getting this error message "Check the server name or IP address, check your network connection, and then try again" when I try to access my Windows computer on my home network. I never had problems before... I don't understand why this message suddenly appeared keeping me from accessing the shared folder on my XP based computer.
Thanks

Hedi ® wrote:
Hi,
I'm getting this error message "Check the server name or IP address, check your network connection, and then try again"
This means that your Mac is not seeing your WinBox, either by IP address (a series of four sets of three numbers which might look something like this: 192.168.001.010) or by name (usually a SMB connection, which would look something like this: 'smb://winboxname' where 'winboxname' is the name of your WinBox).
Typically this means that you were connected by IP, and the target's IP address has changed.
when I try to access my Windows computer on my home network. I never had problems before...
You probably have DHCP enabled on your home net, and your WnBox's IP address has changed because its old lease expired. That kind of thing is why you should set up your net to either have fixed IP addresses or to reserve a specific IP for a specific machine, or you should use the smb name instead of the IP.
I don't understand why this message suddenly appeared keeping me from accessing the shared folder on my XP based computer.
See above. If you want to connect by IP address, you'll need to know the WinBox's IP. Go to your Start menu, select the 'Run' box, type 'cmd', hit Enter. You'll get the Windows terminal. In the terminal type 'ipconfig/all'. You'll see the IP address (and the MAC address, useful if you want to set up a reserved IP address). Ensure that the Mac is connecting to that IP. (enter 'smb://theIP' in the network connection box.)
If you want to connect by name, you'll need to know the WinBox's name. Right-click on 'my computer', select 'properties'. Click on the 'computer name' tab. There it is. Use 'smb://computername' in the network connection box.
Thanks

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Did you reboot the TC? That is always the first step.
Reboot the whole network if that is not enough.
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Are you using Yosemite??
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You can fix it at its source..
Hack in DNS from Mavericks.. so Yosemite can be raised to a level of reliability above GHASTLY.. !!
http://arstechnica.com/apple/2015/01/why-dns-in-os-x-10-10-is-broken-and-what-yo u-can-do-to-fix-it/
Apple still have not fixed it.. and users are now sick and tired of the problem.. so have resorted to what can only be described as extreme measures.. in fact I wonder why people don't just revert to Mavericks.. or earlier.. whatever OS was reliable.. instead of seeing the latest greatest update as necessity.

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I attached the config.

I think final questions, can you have two nat statements that point to the same acl ie.
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nat (fw-civic) 0 access-list no_nat
nat (fw-civic) 1 192.168.5.0 255.255.255.0
Or do I need to create a new acl for the fw-civic interface?
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IPHONE 5: can't receive calls & random error messages, such as "could not activate cellular data network" and "no connection - network unavailable, please connect to wifi or cellular network." This occurs even when signal strength or wifi is operational.

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How to deal with the automatic 6to4 addresses in the network

As we use public IPv4 address in our network, each computer automatically gets an 6to4 address. I understand after the World IPv6 Lauch, these computers may use the 6to4 address to talk to IPv6 enabled websites through the free and unmanaged 6to4 gateways on internet. This may cause unmanaged connectiviy issues. How to prevent this? How would you deal with this? Is there a way to stop these computers to get the automatic 6to4 addresses?
Thanks.

I know this may not be the answer you're looking for...
But what about considering implementing IPv6 within your network? (dual-stack)
When the computers have native IPv6 connectivity, they should always prefer using the native IPv6 connection rather than any of the tunneling mechanisms such as 6to4.
Instead of looking at this as a "unmanaged" problem, look at this as "managed" connectivity service.
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1) Your network steps into the future.
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SG200-08 Loosing MAC addresses of connected devices

I have a SG200-08 Switch that has in the last month been acting up with certain types of traffic. On June 7, 2013 I installed the 1.0.6.2 firmware upgrading from 1.0.5.1. Updating the firmware has not helped.
Last week Tuesday a server that was connected to that switch disappeared from the network, looking at the trouble I had to reboot the server and traffic began to flow. After rebooting the server I found only 1 of 2 MAC addresses from the 1 NIC showing up on the port.
Today I have a Xerox Workcenter connected to the switch on another port and while working on changing settings on the device I stopping being able to reach the device, could not even ping it. I went into the switch port showed active, but no MAC address found in the dynamic table for that port. After rebooting the switch I could reach the Xerox again.
I rebooted the switch on Friday near the end of the day and it was doing better till this morning, all MAC addresses for connected devices were showing up OK. Is the device defective? It had been working OK previously, it is connected to another switch on port 1, and that shows a proper table of dynamic MAC addresses. In both cases of loosing a device it was being used not dormant or in any kind of low power mode.

Dear Michael,
Thank you for reaching Small Business Support Community.
Based on the symptoms; SG200 working fine before, it seems to work ok after reboot, and latest firmware already installed. It seems to me like a hardware failure but still, in order to confirm, it would be a good idea to restore to factory conditions and configure it manually again. Just in case that does not help I suggest you to contact the Small Business Support Center for further assistance;
https://www.cisco.com/en/US/support/tsd_cisco_small_business_support_center_contacts.html
Please let me know if there is anything I can assist you with in the meantime.
Kind regards,
Jeffrey Rodriguez S. .:|:.:|:.
Cisco Customer Support Engineer
*Please rate the Post so other will know when an answer has been found.

Live CD "connect: Network is unrechable"

Hello Guys,
I'm having trouble installing Arch on a small NAS. I'd like to connect it to some repositories and download a couple packages but can't. Something is broken with how Arch connects to my network.
The NAS sports a SuperMicro X7SPA-H, a Mini-ITX mobo that has two gigabit ethernet adapters. According to lspci, the proper modules are e1000e and they are loaded.
Using either ethernet port, I get an IPv4 address: 192.168.0.112 or 192.168.0.113. When I try to ping 192.168.0.1, I get connect: Network is unreachable. For pinging domain names, I get host unreachable. I've rebooted and tried setting up the network multiple times, alternating the ethernet port used.
I've seen that using ifconfig, each network interface gets an IPv6 address. 99% of the time I do not see an IPv4 address. Only once did I see eth0 display an IPv4 address, but the IPv4 address disappeared after running ifconfig again. I have not ever seen eth1 show an IPv4 address through ifconfig. Another strange thing is that after running dhcpcd eth0, killing it, and running dhcpcd eth1, I see the same IPv6 address in the ifconfig output for both network interfaces. The same thing happens when running and killing and running dhcpcd in the opposite order.
Any ideas? I could sure use some.
Thanks!

Gcool,
Thank you for the reply. I hope this output is useful.
Since I can't copy and paste directly from the screen, I'll show the nic entries in lspci -k:
02:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
Subsystem: Super Micro Conputer Inc Device 060a
Kernel driver in use: e1000e
Kernel modules: e1000e
03:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
Subsystem: Super Micro Conputer Inc Device 060a
Kernel driver in use: e1000e
Kernel modules: e1000e
ip addr gives this:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 disc no queue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 disc pfifo_fast state UP qlen 1000
link/ether 00:25:90:68:bd:34 brd ff:ff:ff:ff:ff:ff
inet6 fe80::225:90ff:fe58:bd35/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 disc pfifo_fast state DOWN qlen 1000
link/ether 00:25:90:68:bd:34 brd ff:ff:ff:ff:ff:ff
inet6 fe80::225:90ff:fe58:bd35/64 scope link
valid_lft forever preferred_lft forever
ip link gives this:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 disc no queue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 disc pfifo_fast state UP qlen 1000
link/ether 00:25:90:68:bd:34 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 disc pfifo_fast state DOWN qlen 1000
link/ether 00:25:90:68:bd:34 brd ff:ff:ff:ff:ff:ff
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Log connection attempts and source IP address for connections that fail/timeout on RADIUS

How can I log the connection attempts and source IP address for connections that fail RADIUS authentication? I'm using RD Gateway on 2012 R2 in conjunction with Azure Multi-Factor Authentication Server on another 2012 R2 server. When a user fails
multifactor authentication or the authentication times out, all I get is Security event 6273 on the RD Gateway that the radius server did not process the request, and only the radius server's IP is logged. There's nothing logged in TerminalServices-Gateway\Operational
because the TS Gateway hasn't yet processed the connection attempt (all auditing options for RD Gateway are enabled). The MFA/Radius Server is only logging the connection from the TSGateway - it doesn't know the original client's IP address.
I'm looking for the equivalent of an IIS log - somewhere the RD Gateway should log the initial HTTPS connection attempt and the source IP address of the client. I need to be able to track down potentially fraudulent login attempts.

Hi,
Thank you for your posting in Windows Server Forum.
This error might be caused by one of the following conditions:
• The user does not have valid credentials
• The connection method is not allowed by network policy
• The network access server is under attack
• NPS does not have access to the user account database on the domain controller
• NPS log files or the SQL Server database are not available
To perform these procedures, you must be a member of Domain Admins.
Please check for more information:
Event ID 6273 — NPS Authentication Status
http://technet.microsoft.com/en-us/library/cc735399(v=ws.10).aspx
Hope it helps!
Thanks.
Dharmesh Solanki

Unable to set the ip address for hosted network client after creating WIFI hotspot

Original Title: INTERNET CONNECTIVITY PROBLEM WITH MY LAPTOP WIFI HOTSPOT
HI all
I am able to use internet connection from my lap hotspot, when the internet source is Public or private wifi.
so I know the cmd window commands for hotspot and settings of client(sharing to hosted network client, assigning IP address etc.,)
but the problem I am facing is slight different
I am using my cdma wireless broadband datacard as my source internet connection(Reliance netconnect +)
when I try to create hotspot for this, as usual I am able to create the hotspot and able to share the internet to hostednework client.
but I am unable to set the ip address for hosted network client, if I try to set ip 192.169.137.1 and 255.255.255.0
as soon as I close the window, the ip address also disappears
when connect my android phone to that hotspot, it is able to connect but there is no internet connectivity.
when I check the hostednetwork client for packet transmission, both sent and received packet is happening., I mean transmitting
so what cause the failure in internet connectivity but success in hotspot connectivity?
check the screen shots...
can u help me..
its little complicated

Hi,
Please make sure the Ad hoc connection IP adress is at the same range with your local connection. In addition, how about recreate the ad hoc connection for test, please have a try.
If problem persists, please use Network troubleshooter in Action Center to fix this problem for test.
Roger Lu
TechNet Community Support

Firewall blocking mDNSResponder data port 5353 on office network

Hi All,
Is there a way to allow mDNSResponder through the firewall???
I had a similar problem a while back and during one startup the firewall asked if I wanted to allow mDNSResponder and I said yes. But now the window does not come up. I have added itunes to the list of specific apps which also include: Safari.app, ntpd, Executor.app, LogMeIn.app, nmblookup,nmbd, krb5kdc, qmasterd, NetAuthAgent.app, iPhoto.app, Screen Sharing.app, RealPlayer.app and quitTime Player.app.
Am I missing something?
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May 13 09:48:56 Jim-Mols-Computer Firewall[52]: Deny mDNSResponder data in from 192.168.1.90:5353 uid = 0 proto=17 [another computer in the building]
I can see where the firewall would might block other computers but am I to assume my computer is trying to talk to itself and being denied?
Thanks for your ideas
More stuff below that I don't understand:
May 13 09:54:58 Jim-Mols-Computer Firewall[52]: Deny mDNSResponder data in from fe80::20a:95ff:fe9c:7800:5353 uid = 0 proto=17

Well, it wasn't blocking anything (other than Bonjour) to begin with, so what's the diff? If your Mac gets taken over, it will be via one of those many server apps you are running for which you've punched holes in your firewall. But if you remove them from the firewall, they don't work. So what is the point of the firewall again?

Block Subnets or IP Address on connected network

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