A utility available on all operating systems that helps test network connectivity.

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21 views

Time to travel hops networking

If two machines are on the same network, as in, they both are connected to the same default gateway, does sending out a ping from one machine to the other make the other reply with a TTL value ...
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1answer
137 views

Why do TTLs differ in a ping

If I send a ping to a certain machine across the country with a ttl equal to 15, why does the response from the server have a ttl of 51?
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3answers
2k views

How to 'ping' politely

Today minecraft was down at exactly the moment when I wanted to take a break from studying for my finals. A harrowing experience! So I thought I would procrastinate a bit by writing a script that ...
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1answer
276 views

How to read the route table?

Host: win8 ip: 192.168.1.102 Virtual Machina: gentoo ip:192.168.1.108 I type the command route -n to see the route table. The route table is : root@gentoo-jl ~ # route -n Kernel IP routing ...
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2answers
284 views

What does this Ping answer mean?

This is the output from an attempt to ping from a Windows 7 computer with an LTE modem plugged in. The LED on the device tells me that the device has a data (IP) connection, but the Windows network ...
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1answer
1k views

How is ICMP unique?

I just read this in Wikipedia: Although ICMP messages are contained within standard IP datagrams, ICMP messages are usually processed as a special case, distinguished from normal IP ...
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2answers
56 views

source address of packets in a wifi network is the router and not the pc

I executed ping fron machine A (wireless PC) to machine B (wired PC to the wireless router). When I check the packets in machine B with wireshark they have the source address of the router ...
2
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1answer
407 views

Manually allow ping.exe through firewall

To improve my feeling of security I recently switched my windows 7 firewall to block all outbound connections. The only thing I can't seem to get to work is ping.exe. I tried by creating custom rules ...
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2answers
746 views

Ping flood attack every 5 seconds [duplicate]

Possible Duplicate: Ping flooding: what to do about it? My router's log, which is a D-Link DIR-600, shows 40 pages (and updating) of entries like: Nov 19 11:17:08 PING-FLOODING ...
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1answer
376 views

Make two virtual machines ping in virtual box

I'm trying to make two virtual machines communicate in Virtual Box, but without any success. Here are the steps I have done: I set both VMs in Internal networking mode (using VBoxManage modifyvm ...
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3answers
2k views

When I ping a server name, how is the domain determined?

On my machine, when I ping a server with fully qualified name, it works fine ping myserver.newcompanyname.com But when I ping the server name by itself, it fails. And it also indicates that it ...
5
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1answer
653 views

Checking if a computer on local network is a sleep or not without waking it

I would like to check if a computer on a local machine is in a sleep or awake, but without waking it on LAN. If I ping the machine then machine automatically wakes up. I don't want that. I just need ...
2
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1answer
554 views

Can Network Card cause high ping?

I have windows 7 x64 VoIP Modem. Arris Modem. 12Mb cable internet ASUS P5K motherboard with built in Atheros L1 network card. Few month ago my downloading speed started to slow down from 12mb ...
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2answers
866 views

unable to ping machine on WLAN

I've started accepting remote desktop connections on one of my machines. If i connect the machine to my router using an Ethernet cable i am able to ping it and connect to it remotely (using RDP). ...
3
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1answer
476 views

Slow response for ping to 127.0.0.1

I have a ping to 127.0.0.1 which varies between 1 and 23 milliseconds. I'm using a VIA Rhine II Fast Ethernet Adapter, and updating to the latest driver version 3.87.0.1 didn't seem to fix the ...
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1answer
867 views

Pinging an external server through OpenVPN tunnel doesn’t work

I have an OpenVPN server and a client, and I want to use this tunnel to access not only 10.0.8.0/24 but the whole internet. So far, pinging the server from the client through the tun0 interface works, ...
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0answers
253 views

Why my computer is not accessible over internet?

I connect my computer to internet through my airtel mobile (3G). This computer has no firewalls ON at all, neither OS's (XP) firewall nor any Anti-Virus's Firewall. ICMP also enabled. Why can't i ...
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1answer
171 views

Wi-Fi connected but can't go to any site

My Windows 7 laptop can connect to our Wi-Fi signal, I can sign in on Yahoo! Messenger, but I can't go to any site. I can access the Net on other devices. The issue started a few weeks ago, so I've ...
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4answers
5k views

How can I monitor my ISP's connection quality over time?

I've got a very bad ISP and want to monitor the connection quality over a month's time. At the moment I just wrote a script which logs ping requests to Google's DNS server 8.8.8.8. How can I do ...
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3answers
2k views

What is the difference between “could not find host” and “timed out” when pinging fails?

As the title states. I was trying to ping a bunch of servers whose existence I am not sure of. There are 10 servers in all. Two of them got ping timed out while the other eight have could not find ...
297
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4answers
37k views

Why does pinging 192.168.072 (only 2 dots) return a response from 192.168.0.58?

I mistakenly missed the dot off of an IP address and typed in 192.168.072. To my surprise I connected to a machine at 192.168.0.58 If I ping 192.168.072 I get responses from 192.168.0.58. Why is ...
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2answers
67 views

Latency problems at different times of the day [closed]

I'm with Telstra, and basically when it's early in the morning I get 190 ping the average for me, but when it passes 11-12am the ping slowly raises, by 3pm I'm stuck with 300 ping and up, it doesn't ...
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3answers
383 views

How does ping(8) work?

I was learning server/client basics, as part of my networking programming skills development. So basically I write server listening on some port, and client connecting to it and data flow goes on... ...
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2answers
289 views

apt-get works, ping doesn't

I'm using the shell on Ubuntu. $ sudo apt-get install emacs works fine, downloaded the packages and everything. On the other hand : $ ping www.google.com doesn't work : PING www.google.com ...
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1answer
1k views

Server 2008 R2 not responding to ping, RDP, port 80, etc

I have a Windows Server 2008 R2 Domain Controller. I can RDP, ping, and access the webserver while in the local area network on the LAN NIC. But I cannot RDP, ping, or access the webserver while ...
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2answers
1k views

How to suppress “Destination Host Unreachable” when running ping

When I run the ping command, I often do so with the goal in mind to learn when a particular machine has come up, e.g. from rebooting. But recently (read: in the last few years) I have noticed that ...
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1answer
557 views

aDSL dropped packets, but only when more than one computer is connected

I'm having problems connecting my LAN to aDSL. I run a Mac Mini server with a fixed IP address, and my own named, smtpd, httpd, etc. There are two other Ethernet computers, and an Airport Extreme ...
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1answer
591 views

No ping to localhost

Ping to e.g. my router on 192.168.1.1 or to google.com are fine, but ping to either 127.0.0.1, localhost or ::1 results in: C:\>ping 127.0.0.1 Pinging 127.0.0.1 with 32 bytes of data: General ...
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0answers
94 views

One sided ping on VM

I have my PC (Windows 7) and a Virtual machine running on it with VM Player (Windows XP). I have a server running Windows 7 and virtual machine with Windows XP and oracle instances. PC - ...
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0answers
64 views

Negative ping on OSX? [duplicate]

Possible Duplicate: Negative ping time? Running the ping command for a very long time, I get this result: 384063 packets transmitted, 380228 packets received, 1.0% packet loss round-trip ...
4
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1answer
3k views

Why does a PING reply require an ARP request for the originating hosts MAC?

I have a scenario as depicted below. Here two host machines are connected via a hub: Ok, so host-1 wants to ping host-2 and i have setup wireshark on a 3rd host connected to the same hub. Now ...
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1answer
1k views

Can't ping microsoft.com from a windows computer

I have an Acer Aspire One netbook (A0531h) that cannot access (or even ping) microsoft.com. I can access (and ping) any other site just fine. I just re-installed Windows XP Pro 5 mins ago (second ...
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2answers
1k views

What public IP should I use for long-term network test?

What IP address is OK to ping -f for a prolonged time (the whole day)? "4.2.2.2" or something else? The main concern is the admins there that may decide that it is some DoS and block/complain... ...
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1answer
614 views

Another 'can't browse but can ping'

Suddenly my ability to browse disappeared yesterday. I can still ping by ip/name, I can connect to RDP computers remotely. I also have a virtual machine on my laptop that is able to browse the web. ...
1
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1answer
150 views

ping takes longer when connected to net via router

When I am connected to internet via direct LAN wire the average google ping time is 64ms. But when I am connected to it via WLAN or wifi(through router) the average average google ping time goes up to ...
2
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1answer
2k views

Cannot ping two hosts from different subnet with Cisco routers

I have a configuration where two Cisco routers are in different subnets. The first one is in 192.168.0.0/24 and the second one is in 192.168.1.0/24. The routers are connected via serial by the ...
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0answers
288 views

Ping Flooding in router log

I've had recently a period of repeated disconnections from my router with connection problems. I checked my router log I found several Ping Flooding entries all originating from the IP 69.171.227.232 ...
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0answers
130 views

Ping flooding from Facebook IP 69.171.227.232 [closed]

I've had recently a period of repeated disconnections from my router with connection problems, and when I went to the router log I found several Ping Flooding entries all originating from the IP ...
0
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1answer
112 views

server cannot ping unless wireshark is capturing packet

A server cannot ping to other servers unless a wireshark is capturing packet. And I believe that a process is capturing packets before ping process. But how to find this process?
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2answers
935 views

Weirdly high ping on direct ethernet connection?

I bought new Lenovo IdeaCentre H430 pc and I'm having problem with high pings. Windows 7 with on-board realtek NIC. Fresh install, fully updated, drivers installed from included CD. When I start ...
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2answers
213 views

Ping isn't acting accurate?

I've been trying to diagnose some latency issues with my internet connection. I've been lagging out of online video games and such, which of course could be their server's fault. So, I've been ...
3
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1answer
3k views

Use Linux ping in Cygwin

I need to work with a script that uses the ping command with its ordinary Linux syntax, neither Cygwin's default package or the Windows ping utility will work. For now, I've patched the script to ...
4
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3answers
225 views

How do I check that a *nix machine is online without ping?

I have a bash script that uses rsync to backup files from two remote workstations (unix and linux) to a local hard drive. I want the script to check that the workstation is online before running ...
0
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1answer
645 views

I can ping, but cannot traceroute or connect to VNC

I am trying to connect to a remote computer using VNC. As I try to connect using VNC, my connection always times out. (I use the Remmina REmote Desktop in Ubuntu, and the server desktop is a mac ...
0
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1answer
716 views

Deny ping response in ipv6

I would like to know how to deny ping replies on my ipv6 address. We have been messing around with ping flooding on ipv6 at work, and the usual way to block icmp requests does not work. I have tried ...
9
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5answers
33k views

Pinging a machine on my local network gets an 'unreachable' response from my own IP address?

Edit for future readers who get here from google: This question is now the top google result when searching for 'destination host unreachable from my own ip address'. If that's how you got here, then ...
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4answers
818 views

Network connection troubleshooting, unreliable ping

I am trying to troubleshoot a network connection. The connection is wireless, and for the most part works well. (Physical connection from computer to router, physical connection from router to ...
3
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2answers
4k views

no response when I ping my website, but I can still access it?

Sorry, this may be a dumb question, but I noticed something weird when I went to terminal and typed ping -o mysite.com and I get the message... Request timeout for icmp_seq 0 but when I visit my ...
0
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1answer
215 views

Any (Flash?) website to execute a single ping (from PS3 web browser)?

I'm trying to do some diagnostics on my PS3's wireless network adapter, but it doesn't seem to have a command prompt or anything from which I can execute a ping. So, I'm looking for a website with a ...
2
votes
1answer
64 views

Can't connect to the web

I have 2 laptops. One is Windows 7 PC, another is Apple. I also have a DSL modem and a router. The problem is I can't connect from the Windows 7 but can from Apple. I can ping the router without any ...