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• Cisco Aironet 1200 Series AP Configuration

  - by nonterrorist

  I am attempting to configure a new CISCO Aironet 1200 Series Access Point to have a fixed IP. I have been searching online and I have come to the conclusion that the default IP address of this device is 10.0.0.1. These are the steps I have taken: My machine is plugged directly into the Ethernet port (not the Console port) of the AP. My Ethernet adapter is set to 10.0.0.2. I have reset the AP by holding the Mode button while powering up the device. The issue remains that I can not access 10.0.0.1 through the web, nor can I ping that address.

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• psloggedon timeout question.

  - by user60707

  Hi guys, I have a list of machine names from my network that I have put in a batchfile to run through the list and show me who is logged onto each. psloggedon \machineA psloggedon \machineB psloggedon \machineC psloggedon \machineD psloggedon \machineE psloggedon \machineF Psloggedon works fine, however when it hits a machine that isnt actually on the network, it hangs for a good 30 - 60 seconds before moving onto the next machine...I was just wondering if there was any way to speed this up so that if it hits a machine that isnt on the network, it moves onto the next machine in the list much quicker. I have read in other places that this could be possible by adding a ping -n loop into the command but im not sure how to get that to work? any ideas guys? Many thanks in advance. Jimmy

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• Why do some web servers not respond to icmp requests?

  - by John Himmelman

  What is the purpose of blocking/dropping inbound ICMP traffic on a public web server? Is it common for it be blocked? I had to test if a server was accessible from various locations (tested on various servers located in different states/countries). I'd rely on ping as a quick & reliable method of determining if a server was online/network-accessible. After not receiving a response on a couple boxes, I tried using lynx to load the site, and it worked.

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• Why would http & https be blocked, even in safe mode with firewall disabled?

  - by Cogwheel

  I have a windows 7 machine (dell studio xps). Everything on it seems to be in working order. The network device says it has internet connectivity, and indeed I can ping websites, transfer files via ftp, connect to vpns and remote desktop, but the web won't work. I've disabled the windows firewall and still no go. There are no other firewalls installed. The computer came with a trial of norton 360 so I also used the norton removal tool (which solved a similar problem on another computer for me previously). Any thoughts?

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• Slow website load with CNAME, fast when using IP

  - by Nate Strandberg

  I setup two DNS servers on my network: ns1.byte-werx.com && ns2.byte-werx.com I can ping the DNS servers and get a fairly good response time, when I dig them I also get a fairly reasonable response, but any website I filter through them is painfully slow (an upwards of 20+ seconds) -- verifiable by performing a tracert or attempting to access the URL in a browser. The DNS servers are running CentOS 6.3 and BIND9 with 500MB of memory (I figure that should be more than enough?). I have a reverse look-up zone (1.168.192) along with two website zones (www.byte-werx.com and www.stayhomedental.com) If I access the websites using their IP the page loads nearly instantly so I do not believe the issue is with the hosting server, but that is running Ubuntu Server 12.04 and Apache2 with 12GB memory. Any thoughts? I do not have the named.conf file in front of me but I can edit this post to include it if you feel it would be useful. Thanks for any advice!

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• VMware postfix server drops connection

  - by nicoX

  Our physical server godzilla forwards mails to our virtuall VMware server b4. They are on the same net. Often connection drops, we can't ping godzilla with our b4. That means mails from godzilla won't reach b4 and the mails will be in handed into the mailq. Sometimes it takes some hours and the issue will auto fix itself, b4 will wake up and the mail will be delivered. Another thing if we remotely ssh into the b4, the b4 will wake up and and receive any mailq mails from godzilla and deliver them. netadmin@b4:/var/log$ arp -a ? (192.168.209.80) at 00:1E:C9:AE:79:9D [ether] on eth0 root@godzilla:/usr/local/bin# arp -a ? (192.168.209.20) at 00:50:56:91:7d:b2 [ether] on eth0

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• DNS is resolving fine but can't access the server (unless changing /etc/hosts)

  - by victor hugo

  Hi all, I have a VPS server with a public IP, I added some A entries in my name server like svn.example.com - 1.1.1.1 Also I added some entries in my workstation /etc/hosts file in order to work with the domains meanwhile the DNSs were refreshed. It's been around 3 days from this and I configures everything in my server (using the hosts file), the DNSs are ready and I removed the entries but for my surprise I can access the servers nor anything in my domain or sub-domains (even a ping doesn't work). I've triple checked and the DNSs are OK. I don't know too much about DNSs . Any help would be appreciated. The IP address of my VPS is 74.63.223.43 I have these domain names, all pointing to the same IP (using A entries) hartoingenio.com www.hartoingenio.com svn.hartoingenio.com

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• Can't connect to IIS7 on one of my machines

  - by user38974

  Hello, I have 2 computers, both running Win7 Professional x64. Computer "A" (192.168.0.10) is my work machine, it contains my tools etc. Computer "B" (192.168.0.15) is supposed to be my build server / web server for my projects I've installed IIS on "B", and installed IIS7 remote manager on "A". I'm trying to connect from A's IIS7 Manager to B's IIS but I fail. I have little knowledge of IIS, and I feel that's the main reason. I can ping B from A and get positive results so the machines do see each other. A and B are in the same workgroup but not in a domain (if that matters) - they're in my home network. What do I need to do to "see" B's IIS?

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• Social Media Aggregator, Global Update via Powershell

  - by deanjmiller

  Does anyone know of a way to interface with a Social Media Aggregator using Powershell. For Instance, I would like to update my global status on digsby using Powershell. Digsby would then fan the message out to Facebook, Myspace, Twitter, Etc.. I am open to using any Social Media Aggregator that can do this.. Digsby, Seesmic, Ping.fm TweetDeek, etc.. If any of these programs have a com interface or something like it I'm sure who ever implements this first will have a large gain in users.

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• Can't find a wireless access point's IP address after changing router IP/LAN settings

  - by flagg19

  I have a modem/router, Netgear DG834, and a wireless access point (AP), Netgear WG602. The AP is directly connected to the router. My old working configuration was: Router IP address : 192.168.0.1 Access point IP address: 192.168.0.10 My new configuration is: Router IP address : 192.168.1.1 Access point IP address: ???.???.???.??? I changed my router's IP address/LAN settings to set up a VPN with another Netgear router that had the same LAN configuration. The wireless network is still up and perfectly working, but I can't find the AP's IP address. I've tried broadcast ping but the AP won't respond. I looked at the router "attached devices", but it's not there. I've played around with Nmap and arp request but the AP is totally invisible. I can fix it by resetting it to factory settings, but I'm very interested in learning more about this problem. I'm also interested in network security and this fact of having an invisible AP well, it's something I'd like to understand.

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• Apache Tomcat 6.0.29 startup causing Win XP SP3 reboot

  - by Liam

  Some of our Windows XP Developer machines die (black screen - no ping) when starting up Tomcat from a console. This only happens if the Tomcat debug console window is displayed (not minimised). When minimised, the startup / run is successful. I've checked for Tomcat logs and the crash sessions produce empty (zero bytes) tomcat log files. No system logs exist and no crash dump is created even though this is enabled in the Windows settings. The machine is dual screen and another machine with the same image has the same issue. The only clue is just before the crash, one of the monitors the system reports "Cannot display video mode 1280x1024" (approximate error, didn't write it down). Is there a way I can get Windows to produce log files of this crash session? Beyond running Tomcat as a service / minimised window, how can I fix (or even investigate)?

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• belkin wireless router connection drops for ~60sec every ~15 mins

  - by j j

  Hi, I have a belkin wireless-g router, model F5D7230-4. about every 10-15 minutes, for about 1-1.5 mins I won't be able to browse any web sites. during this period, I usually get replys from "ping google.com". maybe 4/5 times I'll get a reply, 1/5 times i don't. I have changed the router DNS entries from "get DNS server from ISP" to 8.8.8.8, google's DNS and that hasn't fixed the situation. This happens on several computers, running windows7, xp, ubuntu, and a mac, so it is definitely NOT an issue with a computer configuration. any ideas?

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• ARP replies contain wrong MAC address

  - by Jayen

  I've got a robot running linux with wired and wireless adapters. When I boot up, it connects to the wireless fine. When I assign an IP to the wired (either statically or with DHCP), it looks like it works. As in, ifconfig shows a proper IP and route shows proper routes. However, when I do an ARP request of the wired IP, the ARP reply contains the wireless MAC. ??? There's no bridge running on the robot, so why don't I get the wired MAC??? When the wire is disconnected, the wired IP replies to ping... Why is the robot replying over the wireless interface to IP requests on the wired???

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• How to fix unstable RJ45 jacks? [closed]

  - by BeemerGuy

  This is a little project I'm doing at home. I wanted to wire two rooms together (basically, the router is one room, and the switch is in the second room). So I ran a CAT5 between the two rooms, and wired an RJ45 jack in each room. I then hooked up the two jacks with two CAT5 cable to run it through the cable tester, and all 8 wires seem good. Now, when I connect the switch and the router, the connection is unstable -- I ping the router and it barely holds on for two pings before it disconnects, and stays in that unstable state. Just to make sure the router and the switch are ok, I connected them with long wire between the two rooms and the connection is absolutely stable, and pings continuously. What could be the cause for the unstable connection? Especially that it pings a few times, so there IS a connection. But why is it unstable? And how come the cable tester says it's ok, but it's unstable?

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• Cannot connect to apache web server over internet

  - by user1658093

  I can access my apache 2.2 webserver from the lan ( at this case I use local IP aadress ) but I cannot connect externally ( from another network ). I changed apache to listen port 800, forwarded same port from router control panel, turned off windows and router firewalls. I use whatsmyip.com to get IP with what I try to connect. When I'm trying to connect I use : [whatsmyip.com IP]:800. Also, I can ping server IP externally. OS is windows7. Any ideas, suggestions? Thanks

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• Command to see all Windows commands

  - by open_sourse

  When I type help in windows command line, it lists a whole bunch of commands. However I find that there is a whole set of commands that do not appear in this list, for e.g. many networking commands such as ping, tracert, arp, netstat, net etc. I am sure that there is also a whole bunch of non-networking command which is also not listed. So my question is this. Why are these additional commands not shown in help? Is there a subset/group of commands only that help shows? Is there any command/method to list all the commands that can be executed in windows? (I am not talking about additional .exes that get added to path when some new software is installed..)

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• VPN connects but my browsers and messenger don't connect

  - by elizabeth chubbuck

  I have no problem VPN into work. As of last night, everything worked fine. But as of this A.M., none of my browsers connect and Microsoft Messenger will not connect. I did nothing, but had a pending a OSX update. I rebooted.. Still no internet. All network connections working, clearly, since VPN works. Its how I am doing this post now, is via VPN and remote desktopping to work computer. This just showed up as of this morning not working. I renewed DHCP, etc.. but cannot ping anywhere.

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• private subnet nat (openvpn / racoon)

  - by Jonas Schnelli

  I have a openvpn subnet 10.8.0.0/24 running one server and one client (laptop). openvpn works fine. Browsing the web over openvpn from the laptop works also fine. Now on the server there is a private subnet with 10.7.8.128/28. The subnet is set up with racoon (IPSEC s2s vpn). The s2s vpn allows me to access the subnet 10.3.5.0/24 at the other s2s vpn end. Works all fine when I'm connected with ssh to my server. From my laptop i can ping 10.7.8.129 (the servers ipsec local ip) but i cannot reach the net 10.3.5.0/24. I tried to add a static route on my laptop 10.3.5.0/24 over gw 10.7.8.129 with no success. Any ideas how i do setup the nat / routing? Thanks

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• Slow http traffic between VMWare guest and host.

  - by toluju

  I have a web application running as an http server inside the VMWare guest OS, and I'm trying to access the content from the host OS. The guest is running Ubuntu, and the host is running Windows XP. The problem is, when I try to access the application from a browser in the host OS, the content takes a very long time to load (up to a minute for a single page). A browser in the guest OS can access the application with no problems. I've tried using both NAT and bridged networking, but the results are the same. The Windows firewall is turned off. The connection itself appears fine, as ping requests from guest to host as well as host to guest complete without errors or delays. Both guest and host can access the external Internet connection without a problem. I'm using VMWare Player. Any ideas?

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• how do I find the ip address of a host on a Windows network?

  - by user13743

  There is a machine on our network called owner-pc. I want to learn its ip address. I'm not sure which computer it is, and I don't want to trundle to each station to figure it out. When I ping it from the command line on a windows machine, I get something like this: Reply from: fe80::3039:2a21:3f57:f337%1: time<1ms Reply from: fe80::3039:2a21:3f57:f337%1: time<1ms Reply from: fe80::3039:2a21:3f57:f337%1: time<1ms Reply from: fe80::3039:2a21:3f57:f337%1: time<1ms How can I figure this out?

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• Mac OS X 10.6.5 and link-local addresses (169.254.x.x)

  - by WMR

  Starting with the latest update of Mac OS X (10.6.5) all Apple applications (Safari, Mail, iChat, etc.) don't connect to the internet anymore, if the assigned IP address is from the 169.254.0.0./16 range. This is not a routing problem, I can still ping any server I want, even connecting via command line tools works. I know this problem could easily be fixed by changing the IP address to a more common RFC1918 address (e.g. 192.168.0.0./16), but this is what the ISP assigns via DHCP and I am not sure I can convince them (Xplornet) to change that. So I am wondering if there's a (hidden?) setting that would convince Apple applications, that they are in fact still online.

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• How to troubleshoot latency between 2 linux hosts

  - by Jimm

  The latency between 2 linux hosts is about .23ms. They are connected by one switch. Ping & Wireshark confirm the latency number. But, i dont have any visibility into what is causing this latency. How can i know if the latency is due to NIC on host A or B or the switch or the cables? UPDATE: The .23 ms latency is bad for my existing application, which sends messages at very high frequency and i am trying to see if it can be brought down to .1ms

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• Installed IE8 & SP3 on XP now I can't HTTPS from any browser

  - by Kevin

  The computer is Windows XP Professional SP3 with IE8. On the Tools Options Connections the "Settings" is GRAYED OUT (I am an admin on the machine) Any browsing of https:// addresses results in IE displaying the following: "this program cannot display the web page" After installing an alternate browser and trying the same https:// address I get a similar error message. I have tried using Compatibility View Settings to for all web pages and this has no effect on the problem. HTTP addresses work fine, I can PING sites such as google.com without issue. Question: What could be preventing me from getting at the settings to check to see if I'm using a proxy? What else could be preventing HTTPS access?

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• apache httpd cannot browse through browser

  - by nuttynibbles

  i've setup apache and php on a virtual machine. everything works fine in the virtual machine. im able to execute php files and run up phpmyadmin connecting to mysql. on my host machine, im able ping and ssh into the remote machines. however, im unable to browse the php files on the host browser using the ip address. in my httpd.conf, im listening to port 80. i enabled the ServerName 192.168.75.102:80 am i missing some settings? port settings maybe?

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• Cisco VPN Client on Vista - Virtual Adapter

  - by ScaleOvenStove

  I have used the Cisco VPN client for years, and on XP it is pretty much rock solid, on Vista, not so much. You might be able to connect, but unless you set up a constant ping to something, it usually will disconnect, with this error: Reason 442: Failed to enable Virtual Adapater Now, most sysadmins will say, update you client - yes, I know, it hasnt mitigated the issue, ever. I have been using it on Vista since it came out, and updated my client every time a new update comes out. I have used it where the VPN server was a Cisco PIX and a Windows Box allowing the Cisco Client to connect. Anyone have any fixes that you can do on your client to fix this issue?

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