i have my 9 computers 1 prolink modem/router h5200 and tplink switch...for 3 months my connection is quite good..but in the 4th month its starting to Reply 192.168.1.1 Destination net Unreachable..i called up a technician from the network..He changed my modem/router with the same model and it runs for an hour... 5-6 hrs..the problem starts again it begins to ping Reply 192.168.1.1 Destination net Unreachable...b4 my TCP/IP i configured it automatically but now i try to put it manually...my modem/router starts with 192.168.1.1 my first unit starts in 192.168.1.2 and so on.
I have a problem in my Computers network. We have more than hundered computers in our network. When I ping from my computer to other computers that are on the same switch. Does not show any problem. But when I ping to the computers that are on the switched which are not directly connected to the same switch but are on the other swtiches. Ping replys some times and some times it gives request timeoue.
Trying to set up remote access to webcam. Signed up with dyndns.org for Hostname, but when I try to set up the DDNS Service Settings in the webcam firmware it continually gives 'Bad reply from server' and I'm pretty clueless when it comes to networking! As far as I can see it requires a User name and Password plus the newly acquired Hostname as shown [URL]
I've got a 5520 running 8.4(1).I've setup a simple NAT: [code] Running wireshark on the outside of the ASA, I can see the packets going out fine (the source address has been translated). I can see the replies coming in from the 'net. But the replies don't get through the ASA to the internal host.What do I need to do to allow the reverse packets to get through the ASA back to the host ?
Lost Internet connectivity at home. connected via dsl line to my isp.when i issued ipconfig /all command i noticed that default gateway IP addr was a global ip addr. (77.36.x.x) instead of the usual private address 192.168.1.1. DHCP server had IP address 58.206.x.x when i issued ping 192.168.1.1 command, i got this output: "reply from 77.36.x.x: destination host unreachable" i couldn't access my router's configuration menu by typing 192.168.1.1 in web browser's address field.it's very interesting, because i had network issues before but could access my router's config menu and ping it. but now, i cannot reach my local router but receive reply from ISP's router.
I have many VPN sites using ASA5505 with broadband connection and terminating on a single ASA5550.I have a problem with one site. they are having poor performance. One of the issues I can see is an error on the remote ASA 5505.ive tried the reccomended fix using this command: crypto ipsec security-association replay window-size 1024.
I am using the window server 2008 and configure tcp/ip properties correct ping locally reply successful when ping localy but when ping yahoo.com then reply destination host unreachable whereas gateway and dns ip is also correct configure so tell me solution about this problem because i am useing the internet.
I have newly deployed network. I have two ASA5520-AIP20-k9. both connected to ISP and configured as Active/standby failover. the ASAs were working fine at first but later on, the internet connection becomes very slow. the ping reply i am getting from my next hop(ISP router) varies during the peak hour is some times in 2000 msec or above but during off hours, the ping reply time is 1 and 2 msec. when I directly connect my laptop to the link that comes from the ISP its ping reply is 1msec and 2msec. I thought the ping reply of the ASA5520 to the ISP gateway should be constant and should be 1 and 2 msec regardsless of the traffic passing through the firewall.
My customer has various Cisco switches but only cisco 2950 switches has the problem of ping timeout or reply time is too long(average more than 2 sec). It will cause I Network Mangement software alarm always.
When PC was first attached to network, it could not ping gateway(switch). Turns out it was broadcasting for the gateway's MAC address, but never got a response. Tonnes of testing later, if I just change one number on the MAC address of the adapter, it receives a reply from the switch and can ping the gateway.
Why doesn't the native MAC address work?
Update: Just the vendor portion is the determining factor. As long as it starts with 2C-59-E5, it will not work. 2C-58-E5 will.
Update 2: Pinging anything in the same subnet works, just pinging the gateway interface of the switch doesn't happen. Tried on multiple drops, and there are other devices on those drops.
I am working with a strange problem at the minute with HP's NIC Teaming with Transmision Load Balancing.We have a HP blade system the Server is connected to 2 cisco 3020's and then those 2 switches are connected to a 3750 Stack consisting of 2 Members.
Theres an LACP ether channel consisting of 4 Gigabit Ethernet Ports to each 3020 from the 3750 Stack.They both have exactly the same configuration and all ports are up and the channel looks healthy.
When setting the Preference order on the server if I set the NIC connected to the 1st Cisco 3020 as primary i.e. Tx/Rx then everything is fine.If I set the NIC Connected to the 2nd Cisco 3020 as primary then all seems fine i.e. I can ping it, it can access services outside its own vlan and the internet. It cannot however ping anything connected to the same subnet and VLAN on the 3750 Stack.
Doing a packet capture on a server connected to the VLAN on the 3750 stack I can see the Echo Requests coming in and the server sending an echo Reply but the echo reply never gets back to the server with the teamed NICs.
I did a Layer 2 traceroute and all looked fine, all the MAC Tables were good.I thought maybe it was a layer 2 loop causing the problems but I have checked and re-checked STP and can't find any problems. STP has picked up one intentional loop and blocked it.
I've raised a ticket with HP to see if they can point me in the right direction but I don't think it is a problem with there Drivers. It definately seems like a networking problem.
The problem is when one of the hosts trys to reach the inside interface of the remote ASA. E.g. Host 1 trying to ping ASA5510 inside interface. Again Host 1 and 2 have the same subnet address of 10.1.1.0/24. I have configured the ASA 5505 to do the the NAT translations.
configuring DHCP on access point, i have cisco 1142N access point, in my network.. working in autonomous mode, i have assigned a static ip to access point with default gateway.. from AP i'm able to reach internet and user connecting to access point are not able to get ip.. i have DHCP server in my network. how to make access point to fetch ip from my dhcp server and assign the saem to client.
Whenever I try to use Firefox, no matter what website I try to go to, I get the message that firefox can't connect to the server. Whenever I try to go on safari, I get the message that it can't connect to the internet. However, when I use Opera, everything works fine, so it's not something wrong with my internet. At the same time, the website omegle stopped working for me, I don't know if this is related. When I open firefox, I also get the message "TypeError: Components.classes[cid] is undefined". I don't know what that means, but it's probably involved.
I am setting up a Linux apache and bind server to test the behaviour of Windows XP,Vista, 7 and Mac OS X.I have setup a apache and bind already and they were tested individually. I used Firefox and IE to access the apache page by type in the IPv6 address and the page was showed correctly. And I have tried to query the AAAA record of a local zone "testing.com" in my Bind server using nslookup and the result is good too.However, it is strange that I cannot get it work if I type in the FQDN "http://testing.com" in Firefox and IE. I tried to capture the IPv6 traffic in Wireshark (Attached in this post) and there are no DNS query when I try to access the page. Is there anything that I have to set to get it work properly?(Actually I have tested the same thing on Mac OS X and Vista too but the result is the same)Below is my Windows 7 network setting and some nslookup query:
On my PC laptop, when we try to connect to the internet (wireless router) through firefox we get the error message"Firefox can't establish a connection to the server @ cn-us.start3.monzilla.com. When we try using Window explorer we get "Internet Explorer can't display webpage" When prompted to click on "diagnose connection problem" it states Windows did not find any problems with this computer network connection.
A couple of points... the connection indication at the bottom states the laptop is connected to the internet. (WLAN ON)I have a Mac that is connected to our internet and doesn't have any problems.We have Windows Vista on the PC laptop
WIth Chrome it does work although a bit slow. With IE as-well.Had the problem with FB as-well allthough that i could cancel with allowing it to connect.Gmail doesnt.Production Security Services and the certificates seem to cause problems.Searched the internet; tried a scan, checked the date, activataed the SSL and TLS in the browsercertificates, the server and organisations names.
A few days ago, all search engines stopped working on my computer on both IE and Firefox. Everything else works fine and I can surf the net using specific URLs but I can search for anything. I have tried a number of options and various anti-virus, spyware and malware scans but no infections are ever found. I have used, AVG, windows defender, and Malwarebytes.
I have a Windows7 laptop that was working fine til yesterday.I switched it on at home last night and it picked up my wireless connection but when I opened IE or Firefox it would not access any webpage (blank screen, no address that its resolving on status bar at the bottom and just a progress bar (IE) or a 'searching' icon (firefox)The network connection page in control panel says that it is connected and I can ping sites from the command prompt and some other software such as skype seems to be connecting.I have disable both bullguard firewall and made sure the windows firewall is off.I have come into work this morning and am getting the same problems, even when connected by ethernet cable, I can also see other computers on the network.I was occasionally getting a dial up connection pop up box appearing from an old dial-up connection I had set up, but have now deleted this connection.
I cannot connect to the internet using firefox or chrome but there's no problem with internet explorer. This happened after I installed and uninstalled speedbit video accelerator. When opened chrome, it gave me the following error.
(net::ERR_NAME_RESOLUTION_FAILED): Unknown error.
After the problem occurred, I rebooted the system, uninstalled firefox and chrome, freshly downloaded firefox (from IE) and the problem persists. I couldn't download chrome because chrome installer says it can't connect to the internet. Following are the details regarding my system and software.
o/s : windows 7 ultimate internet explorer : 9.0.8112.16421 64 bit firefox : 14.01
I tried stopping the firewall and the problem persists. Can't access router via firefox too!! Firefox doesn't give an error it just gives a blank page (about:home).
If this is a dns problem, how come it doesn't affect IE ?? Why can't utorrent listen on listen port ??
I am having trouble opening firefox as well as itunes. I get a message stating that i am not commected to the internet. I am able to connect to the internet using internet explorer and have no trouble logging on to websites from there.
I have a Windows7 laptop that was working fine til yesterday. I switched it on at home last night and it picked up my wireless connection but when I opened IE or Firefox it would not access any webpage (blank screen, no address that its resolving on status bar at the bottom and just a progress bar (IE) or a 'searching' icon (firefox) The network connection page in control panel says that it is connected and I can ping sites from the command prompt and some other software such as skype seems to be connecting. I have disable both bullguard firewall and made sure the windows firewall is off.
I have come into work this morning and am getting the same problems, even when connected by ethernet cable, I can also see other computers on the network.
I was occasionally getting a dial up connection pop up box appearing from an old dial-up connection I had set up, but have now deleted this connection.
Am experiencing the same problem where IE can connect to internet, but not Chrome, although the only change to my desktop PC (WinXP SP3) was a windows update. This issue seems to be quite common among all Windows OS because when I queried "can't connect chrome to internet" I've found over 50 posts at various forum describing your issue (and mine). I have also eliminated firewall, antivirus, etc and obviously since IE can get on the internet..my network connection is fine...as is/was yours. Looking more closely I'm thinking that somehow the specific port on outbound is not being accessed by Chrome/Firefox because I used a sniffer and see no request leave my pc and verified no request through my router either.
The winsock catalog in a namespace server configuration listing right? How would you explain that resetting the winspace catalogue fixes the issue?Wand3r3r said it was malware, but I'm quite sure we don't have that issue...I know my machine doesn't and this has occured on the library PCs also. I wan't to find sure fix and understand what is happening on the Windows stack, so that I can assuredly deploy Chrome on a student network and not see this re-occuring all over the place.
"How do i setup a proxy correctly using firefox?"I forgot what addon it was that i was trying to use, proxy fox i assume. If there any better firefox proxy addon that i can use i will be happy to use.I want to know the steps to make the proxy work correctly, because i like to be anonymous as possible when using the internet. I don't care about internet speed.
I am on Windows 7 with the Tor/Vidalia proxy package. After downloading Privoxy 3.0.17 and installing the program, I get the following message when I try to start it: "Fatal error: can't bind Privoxy to 127.0.0.1: 8118. There may be another Privoxy or some other proxy running on port 8118". Most assuredly, I have never installed Privoxy before and I don't know which other proxies may be running on Port 8118. Aside from Tor/Vidalia, the only other proxy I am running alternatively with Tor for anonymity is Jap-JonDo. It is also confusing that most web sites mention a Vidalia bundle containing Privoxy, but none of the bundles actually contains it. They all have Polypo instead. I hear that Privoxy is recommended, but how do I get it running, with the message I got?