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304

As you can see from the output, you aren’t actually pinging some server in Arizona or even the United States. Apparently, they decided to protect their website with Cloudflare, which employs a content distribution network to even the load. A CDN works with many nodes, each servicing a (geographic) region. That means the node you’re pinging is very close to ...


18

The location of DNS servers is irrelevant to network speed. The DNS server informs your system about the IP address of the site you're looking for. After that the DNS is out of the way, the name - IP address correspondence is cached for a period of time and you are connected directly to the IP. If your ping is taking more than 200 ms, the problem lies ...


10

I cannot provide a global solution to your problem, just a partial one. You can add this to the switch technique to widen your range of opportunities. If the user running the VM is connected to your LAN via wifi, then you can identify him/her by means of a traceroute. The reason is that you showed us that the VM has an IP on your LAN network, hence it is ...


10

I'm assuming the 20 clients are connected to a switch: Every switch mantains a table of every known MAC address on the table, and the table is in a format like this: Port Address 1 fa:23:65:XX:XX:XX:XX 2 87:4a:12:d2:xx:XX:xx Where Port is the physical port on the switch and Address is the MAC address ...


5

Here are the settings to consider in Chrome web browser: create new Profile (new Person in People) specially for development (so your settings can be separated from the other profiles), Disable Prefetch resources to load pages more quickly in Privacy settings and any other options which could potentially generate unneeded requests (such as prediction ...


2

Yes. You will be using one-to-one NAT to achieve the publicIP > privateIP mapping. TP-Link and Linksys offer these settings on some consumer price-point routers (80-$120). Verify in the product documentation before purchase. You'll usually find the setting under either 'Advanced > NAT > One-to-One NAT' or 'Setup > One-to-One NAT'. The documentation of your ...


2

You could test if ICMP is blocked with the following perl program: ping.pl (Edited to print port) #!/usr/bin/env perl use strict; use warnings; use Net::Ping; my @hosts = @ARGV; die "usage: sudo perl ping.pl host\n" unless @ARGV; my $timeout = 5; my @proto = ("tcp", "udp", "icmp","syn"); foreach my $pro ( @proto ) { my $p = ...


2

You've documented two problems so far: You've got the same IP subnet on both sides of your laptop. Your laptop is acting as a NAT gateway which is kind of like an IP router on steroids. IP routers need to have different subnets on each side, otherwise they don't know how to route things. You've configured your DHCP server to tell your softAP's clients to ...


2

According to this forum post NetDMA was removed from Window 8 and Server 2012 / 2012 R2 due to not really reducing CPU usage: Jeffrey Tippet [MSFT] xxxxxx@microsoft.com > Any clue why was this feature not supported Win 8 on wards? I removed NetDMA in Windows 8. Hopefully, I have slightly more than a clue :) The purpose of NetDMA ...


2

I did things like this sometimes in the past. What confuses me: you are using your tools in VMware? So I assume 10.0.0.0/24 is your physical network and not a virtual one? You should also know that some tools may display something weird because of the extra network layer (the vmware virtual network). First thing you can do for analyzing: Ping the host and ...


2

Tracking down an unknown machine on an unmanaged network is difficult. I've been tasked with this a few times, and in order of preference, this is how I deal with them: Attempt to browse the server (if you are concerned about security if it's some sort of honeypot, do it from a throwaway VM). You never know - browsing to that machine in a web browser may ...


2

Most modems have a hidden DHCP server built in. This can be seen on a hidden administrative webpage, if you know how to access it. Your router is getting its external IP through DHCP from the modem. Since these home modems have one device attached to them - the router - it stores the router's MAC. If you were to attach another device, which would have a ...


1

Here is the PowerShell function to achieve my goal : function Get-InternetProxy { <# .SYNOPSIS Determine the internet proxy address .DESCRIPTION This function allows you to determine the the internet proxy address used by your computer .EXAMPLE Get-InternetProxy ...


1

There's quite a few things that can go wrong if your router runs out of memory. This is assuming a SOHO router running Linux or other embedded operating system. Business/carrier grade routers may act differently. Tracking TCP connections requires a bit of memory from the system doing so. If a router's memory is completely full, it may not respond to ...


1

I believe it to be the selector for the name of the table. The * is used in place of the -t option for the command line variant of the command, with selects the table. For example, normally the table would be selected by specifying -t <tablename>, so in this case -t nat, to select the nat table: iptables -t nat -A POSTROUTING -o eth1 -j MASQUERADE ...


1

Also not a full solution - indeed there may not be a full solution to your question depending on your setup, and ignoring unplugging devices - but could help. If you get the devices MAC address (ie look at the arp table), the first 3 octets of the address can often tell you something about the address - just punch them into a mac lookup finder like ...


1

You are not alone in this. http://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/windows-7-64-bit-mouse-freezesstutters-multiple/0dbeaa4a-1341-41c4-932c-3fc2c524b135?page=1&tm=1433162678183 Here are a few things you can try. 1. Interference Believe it or not, the ethernet jack can interfere with the usb mouse receiver and reduce its ...


1

If you have purchased your domain (xyz.com) from Directi.com you can create a DNS A record at Directi.com to point www.xyz.com (for example) to 52.24.220.140 For the email setup, you need to setup an MX record at Directi.com MX records are used for email servers. You will need to configure your MX record to point to hotmail or windows live. I've never ...


1

OK, a few things: I suspect that you do not 100mbit access to the Internet. (Which is something which your OS will not show. However it will show the link speed to your LAN. That is not the same thing. Nitpick: 35KB/sec is very much not dial up speed. It is way more than that. Your Speed to the Internet is limited by both your desktop, your switch, your ...


1

Your download speed depends on lots of different factors. Every system in the path between your computer and the server you are downloading from play some part. Based on your description, you are on a wired connection. The speed reported by your OS is only the speed of your local network, that is the speed between your computer and the router or modem. Your ...


1

Let's start with the 600L, this is a consumer grade device, this is not necessarily bad, but in this case it is. It's a bargain basement product, designed for use in small homes, so 3-4 units max. Running 30+ units over that thing is pure suicide network wise, it has a maximum shared bandwidth of 150mbps for ALL your wireless devices, but the calculator CPU ...


1

SSH will bind to the L-specified port and listen to it as a server (forwarding packets received on that port to the remote server). It doesn't usually make sense to have a server listening to an arbitrary port as clients wouldn't know how to connect to it. Only after the initial connection additional dynamically assigned ports can be negotiated by the client ...


1

You cannot put your browser in work offline mode because your browser need an online access to the localhost url (which is served by your local apache server - but your browser does not know this). The external core files will be loaded by your browser, not by your apache server. You can try to block access to specific urls of these external core files from ...


1

When the Internet is off, Chrome apparently uses the offline cache, which is why browsing is fast for these files (probably CSS etc.). An idea : If the Apache website is on localhost, start Chrome with a non-existent proxy server for all websites except for localhost, with parameters such as : --proxy-server="127.0.0.1:1234" --proxy-bypass-list:localhost ...


1

Half closed connection is a process that is established when one end of the server and Client intend to terminate the connection . TCP is a connection oriented process thus each socket is opened for a particular application. In TCP there is no pressure for terminating the application. Thus connection oriented process prolongs the termination with wait ...


1

You have to run it with elevated/ admin privileges. (@jfalcon's alternative approach is no different in that respect - it fails when run as non-privileged user and does not even understandably tell you so. (I edited their answer to reflect this.))


1

I found the following solution to work much better than using netcat (nc) as in the other example. With netcat my connection was very slow and would repeatedly hang until I hit some keys. Also you don't need to have netcat installed. Add the following to your ~/.ssh/config: Host * ServerAliveCountMax 4 ServerAliveInterval 15 Host workstation ...


1

Put your computer on the same network, say an IP of 192.168.2.20, 255.255.255.0 and try again. After access restore you IP/4 settings.


1

You can not forward the same port to multiple IP simultaneously, I have not even seen a router/managed switch that will even let you do that without sending back a config error msg. You can set it up for multiple IPs but only one of the forwarding rules can be enable at a time. So you can disable one enable other and vice versa, but that is a waste You only ...


1

A more complex password will help, as the common attacks on WPA are offline dictionary attacks - you may wish to download the common dictionaries to confirm your password isn't in them. If there are a limited number of devices Mac filtering might be appropriate and using a fixed IP The other measures would be physical ones; - restrict the signal strength ...



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