Routers / Switches :: How To Block Unauthorized User

Jul 18, 2011

i have distributed my internet through lan by router .but i think that, that user whom i have gave my net is forwarding to other users too through hub.

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Cisco Switching/Routing :: 3750 - How To Block Unauthorized DHCP SOHO Router

Jan 20, 2012

If it's possible, how do you protect/block a unauthorized DHCP SOHO router with NAT form a Cisco 3750?

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Cisco AAA/Identity/Nac :: 6509 - Detect And Block Unauthorized Devices / Users In Network

Sep 25, 2012

we have Cisco 6509 as a access switch in our network. Each user has an IP phone and a computer. we are going to implement 802.1X for end users by next month. I need to check all the users activity in the network like if someone plug an access point to the network or a router.I just checked Cisco NAC and how to detect those activities on the network.
 
I need to get more details on Cisco NAC or other products for that purpose. also what is the difference between Cisco NAC and application like Microsoft TMG?
 
is it agent less or I have to install something on computers? is it working as a default router for users computers?

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Cisco Switches :: SG200-08 - 802.1x Unauthorized Access / MAC-authentication

Jun 14, 2011

I use 802.1x to authenticate the company-network devices - authentication works fine. I do not use dynamic V LAN --> static V LAN-config on 802.1x ports --> authenticated devices have access to the network.

Is it possible to use a guest-V LAN? un authenticated devices should connect to an other v lan than authenticated devices.
 
One more question: Is MAC-authentication also possible?
 
Switch: SLM2008T V01
Firmware is: 1.0.1.0

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Routers / Switches :: Block Multiple Ports On Only One Ip?

Oct 4, 2011

how can I block multiple ports on only 1 IP Address while not blocking those ports on other IP Addresses. I am using a Netgear WNR2000v1 which assigns the IP Addresses to each device.

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Routers / Switches :: Block Network Browsing On LAN

Jun 3, 2011

I want to block everyone from seeing each other on the LAN. So when someone goes to network neighborhood they can't see no one else on EXCEPT for the pritner or so. I want to do this using a Cisco 1841 router. How can I do this?

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Routers / Switches :: Why To Block Use Of Yahoo Messenger

Feb 6, 2011

why would you block my use of yahoo messenger

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Routers / Switches :: Block Only Internet Access From Firewall?

Sep 25, 2012

i want block only internet access from firewall

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Routers / Switches :: Which Router Can Block Specific Web Pages

Apr 4, 2012

I dont mean a website like facebook.com, but i want it to block an individual page,such as a profile page, yet still be able to access the rest of the site? Again i'm not after facebook settings etc, but i want to restrict access to certain webpages within Lan.

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Routers / Switches :: Block All Proxy Server Websites?

Oct 10, 2011

i just want to ask how can i block all proxy server websites in my router( any brand ) so that no one can access, like facebook i already block it in the router but they still access using proxy server website.

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Routers / Switches :: Block A Website From ZTE ZXDSL831II Modem Page?

Oct 31, 2011

I have ZTE ZXDSL831II modem. Here is the [URL]how can I block a website from modem configuration page?

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Routers / Switches :: Get Rid Of Remote User That Took Over As Administrator?

Aug 19, 2012

Someone hacked into my computer through my Netgear router. They took over as Administrator and setup a Atheros (sp) driver. They pretty much have total control over my computer. How can I rid myself of this hack and protect nyself in the future?

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Routers / Switches :: Adding More Cat 5 User Ports At Tv

Jan 25, 2011

I currently have 1 cat 5 jack at my tv/entertainment area and will be needing additional jacks to add gaming consoles,streaming video player and internet ready tv at the same location.The current jack installed at that location is coming from a D-Link 8 port Gigabit switch installed in a different room.The switch is at capacity,all ports are full,so no additional availability there.My question is how to expand port availability at the entertainment area.Is it possible to put another switch or hub at that connection?Would there be a conflict with cascading a switch from one to another? I have a 25 meg fiber optic incoming service,so there is plenty of speed and bandwith available to handle these componets.

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Routers / Switches :: How To Block Smas Port Scan Attack In Dir600

Feb 13, 2011

I m using DIR600 router. from few days my router shows smas port scan attack detected. then how to prevent this type of attack.

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Routers / Switches :: How To Tell User To Stop Watching Porn

Sep 16, 2011

Although our usage policy clearly states NO PORN, i'm still catching users watching porn. I'm to the point where i'm going to start shunning mac addresses. Before I do that I would like to first send them a message, like Net Send used to do, warning them to stop.

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How To Recognise Mail User Block

Jan 25, 2012

How to recognise mail user block

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Block Multimedia Stream Per User Group?

Oct 1, 2012

I need to block the multimedia streaming to a certain group of users accessing my wireless connection.I'm using squid as my proxy server and the users are registered on a LDAP database. A RADIUS server provides authentication.

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Servers :: How To Block IP User Not To Flood Chat Room

Feb 4, 2011

I have an chat room and have a problem with 2 chatter who keep on flooding my room. I need a good mode to set for me to Bann then life and all my modes I am using its not good and they keep on coming back with their IP or fake ip users

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TP-Link 150Mbps Wireless :: WR740N How To Block User From Router

Apr 28, 2013

Region : Others
Model : TL-WR740N
Hardware Version :
Firmware Version : 120320
ISP : connect communication

HOW CAN I BLOCK USER FROM MY ROUTER WHO USES WIRELESS WITHOUT CHANGING PASS BECAUSE I WANT HIM TO KNOW PASSWORD BUT HE COULD NOT CONNECT

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Cisco AAA/Identity/Nac :: Use Radius On ASA 5505 To Block Outgoing User Access By Username In Group

Jan 15, 2012

Can I use AAA Radius on a ASA 5505 to block outgoing user access by user name in a group?

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Cisco Switches :: How To Block SG300 10 Ports

Sep 30, 2012

I just recently purchased an SG300 10 port switch. After reading through many of the threads here, I was finally able to get the different VLANs to route properly. However, I'm having a unique issue that I'm not sure if it's related to the switch or not. I currently have 2 VLANs configured on the switch.ports 1-4 are native vlan 1 (192.168.1.X) ports 5-7 are VLAN 10 192.168.10.X (Trunk Port with VLAN 1 tagged and VLAN 10 untagged)I have a Hyper-V server connected to both of these networks. The VMs are running on both VLANs on port 5. I have the following problem:When I have a domain controller VM on VLAN 10, I notice that many of the DC communications failed. I took a network trace and noticed that many of the RPC port ranges were failing. I am able to ping all of the hosts on VLAN1 and vice versa. My question is as follows:Does this switch have some type of security option that blocks high range ports? I can't seem to find the menu option indicating that this is the case. I have already set-up a NETBIOS UDP proxy, but this hasn't worked much. I still have problems connecting to machines on this VLAN range.

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Cisco Switches :: SG300 - How To Block Management Access

Mar 25, 2012

I have a SG300 switch working in layer 3 mode. I created 3 VLANS and the intervlan communication is working fine. I want to know how to block acces to switch managment from the Vlans. One of the vlan is allowed to access the switch but not the others vlans. What is the best way to implement this? with ACL or with Managment Access Method, creating an access profile?

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Cisco Switches :: SGE2010 Does Not Block Ports Even With STP Enabled

Jul 28, 2011

We are experiencing bridge storms and network slow downs and we believe we have traced the issue down to users plugging a cat 5/6 cable between 2 ports on the wall both wired back to a SGE2010 switch.
 
So we did a test - we plugged a single short cat 6 cable between 2 ports on a SGE2010, our access switch. Suprisingly, even with STP enabled, the switch DID NOT block one of the ports and in a few minutes the ENTIRE NETWORK was down, as CDP, STP, and ARP traffic became a multi-gigabit storm throughout the network.
 
Why on earth does this switch not block a port that is obviosly looped?
 
Every other cisco switch since I started on 1900XL's did this in 1999.

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Broadband :: PC Access By Unauthorized Persons

Jul 1, 2011

some people are accessing my computer from another place how can i give protection to my computer?

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See Unauthorized Dhcp Servers In Network?

Apr 20, 2011

how can i see unauthorized dhcp servers in my network

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Cisco Switching/Routing :: Block Appletalk On 3560 Switches

Sep 9, 2012

In cisco documentation for the 3560 it is mentioned that blocking appletalk will not work .It shows up in command line but it is not working due to hardware limitation.Is there any other way to block appletalk on 3560 swiitches.

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Wireless :: Typing 192.168.0.1 And Webpage Says HTTP 401 Unauthorized

Dec 17, 2011

192.168.0.1 "HTTP 401 unauthorized access: Authorization is required to access the configuration server. You must enter the correct username and/or password."I am trying to set up my Netgear wireless router. I have my username and password, but never get the chance to type it in. My Default Gateway is set to 192.168.0.1, but when I type it in the web address, I get the HTTP 401 error message above. I can access the internet through LAN cable now, but would like to get wireless set up to do so..

Windows IP Configuration Host Name . . . . . . . . . . . . : User-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid

[Code]....

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Wireless :: Prevent Unauthorized Access With Window XP?

Aug 3, 2011

I am using wire less internet in a public space with my personnel lap top, my question is how to stop unauthorized access to my lap top desk top, drives and other files.

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Home Network :: Unauthorized Name And Password Change?

Nov 1, 2012

In short, I had the following problem in the past but it solved itself when people physically left the area. Now they are back, the problem is occurring and this time I have as many router settings as I can find to maybe aid in the solution.This is the problem:We have a wireless network where the physical equipment is not available to users and yet, the local network name and password continues to be changed wirelessly FROM say, "ABC network" with network password "ABC secret password" to "Jimmy's Network" and network password "some new string of letters and numbers". (we know who Jimmy is but will not approach him until we learn if this situation is inadvertent on his part or more purposeful, which we doubt as of now)Cisco Lynksys Wireless-N Home Router WRT120N[CODE]

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Cisco VPN :: 5520 - Getting Unauthorized Connection Mechanism

Jun 12, 2012

I have a Cisco 5520 cluster and Cisco Anyconnect Secure Mobility Client 3.0.5080. I eventually want to connact by means of a Smard Card and I was able to connect a view weeks ago. Now I am hastled by the error Logon denied, unauthorized connection mechanism, contact your administrator. Well that's me and a do not know anymore where to look on the Asa. I thought it had something to do with the authentication method, but AAA (AD or Local), nor cetificates is now working.
 
Cisco's solution...:

Error: "Login Denied , unauthorized connection mechanism , contact your administrator" 

AnyConnect clients are failing to connect to a Cisco ASA. The error in the AnyConnect window is "Login Denied , unauthorized connection mechanism , contact your administrator".

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Change Password To Prevent Unauthorized Access By Other People?

Feb 15, 2012

How do I change my password to prevent unauthorized access by other people?

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How To Display Custom Page For Unauthorized Website Access

Feb 12, 2012

We have blocked some sites in router which our user cannot access and it gets them default browser message "pages cannot be displayed". But I want to display pages like "You are trying to access unauthorized website" or something like that when they try to open such websites.

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Cisco Switches :: SG 300 - VLAN Was Not Created By User Error

May 27, 2013

I managed to create VLAN 30 (mgmt) and VLAN 888 (blackhole) on this SG 300 switch. Now I've configured ports 1-6 untagged on VLAN 30 and left ports 7-8 untagged in VLAN 1. Port 10 is my uplink to my router, which config looks like this:
 
interface gigabitethernet10
spanning-tree portfast
spanning-tree guard root
switchport trunk allowed vlan add 30
switchport trunk native vlan 888
 
If I connect a device into port 7 or 8, I get no IP address from the relevant DHCP server on my router. Thus, I thought I could add VLAN 1 to the trunk, but here's the surprise:
 
swi01-zg-#configure t
swi01-zg(config)#int gi10
swi01-zg(config-if)#switchport trunk allowed vlan add 1
VLAN 1 : VLAN was not created by user.

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