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Questions tagged [ping]

Ping is a mechanism to see if a remote host is reachable via an IP network

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network issue when pinging hosts of the same lan [migrated]

I have two hosts on the same network: Kali which is on VirtualBox as guest; eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 ether 08:00:27:48:45:25 txqueuelen 1000 (Ethernet) ...
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1answer
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detect network status even if it is disconnected for a millisecond shell script

I have this shell script which keeps running continously. #!/bin/sh while true; do ping -c1 www.google.com > /dev/null; done When I disconnect my lan cable this script throws error in the ...
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Intermittent Ping/DNS timeouts [on hold]

Can anyone suggest anything which might cause a server to fail to ping a switch and simultaneously fail to resolve DNS requests at regular intervals without affecting other network traffic to that ...
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14 views

Unable to use IPV6 with mobile phone [closed]

I observe the following problem with my Android phone (Sony Xperia XZ, Andoid Oreo 8.0.0) Though the phone seems to have a correct set of IPV6 addresses it fails to communicate when I use IPV6. the ...
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Ping Federate 8.2.2 .well-known/openid-configuration “jwks_uri” is missing keyset

I am creating a resource server that is using using ping federate 8.2.2 as as an authorization server to validate JSON Web Token's upon certain requests. I am trying to validate the signature, so I ...
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1answer
21 views

Why do players in EU get a higher ping when connecting to a Chinese server during their daytime as opposed to their nighttime? [closed]

Apologies if this is wrong place for this. I was directed to this board as it's a server issue. There's a server that I play on freqeuently that is in China; I live in Europe and understandably have ...
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1answer
43 views

Could a DDoS still result in low-latency ping replies?

I have a hosted server running Asterisk PBX with the following specs: Debian 9 x86 64bit Linux, 2GB RAM, 2TB bandwidth, and 20 GB SSD storage. For almost a day now, the server has been seemingly "...
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1answer
69 views

Can not ping interface's public address of my instances

I have basically 2 VPCs where CSR 1000v is deployed in each VPC (CSR1 and CSR2). I attach a drawing my setup below. I created 2 interfaces in deferent subnets within its VPC CIDR in each VM and ...
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39 views

W 2008R2 Can't Ping from two of about 20 workstations

I've just moved a 2008R2 server to a new building, along with about 15 workstations (W7/W10). Simultaneously, installation additional 5 workstations (W10/Intel i5 Nucs). 3 of the additional five work ...
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2answers
34 views

Ping packet loss even though the target is reachable. Does this mean packets are eventually getting through?

If I do ping 8.8.8.8 sometimes it returns the following for a period of time: From 172.22.1.1 icmp_seq=36 Destination Host Unreachable But at other times it does reach the target and yet it says ...
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1answer
105 views

Ping public ipv6 dns from docker container

The docker container is running on a VPS (ubuntu 18.10). What I am able to do: ping -6 2001:4860:4860::8888 from host machine ping -6 <docker container ipv6 address from host machine ping -6 &...
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2answers
103 views

pfSense allow ping only from 1 IP address

We are a dutch company with an office in the USA. This office has an pfSense firewall device with the 182.12.12.12 IP address . In the Netherlands' office we have an IP address like this: 100.12.10....
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1answer
84 views

How is the Ethernet payload only max 1500, while I can ping with larger size packet?

Just recently I came to know that the payload of Ethernet is max 1500 bytes (mtu). The first thing that came to my mind was that we can ping with much more size than that. So I thought maybe the ...
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1answer
32 views

Remove tcp entry from netstat -a

I have a rather strange issue and no matter what I do or search, I cannot rectify it and have now decided to seek help here initially. I have a cluster of servers, about 10 clustered together. A few ...
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1answer
44 views

Installing app through GPO

I will need your help... The last day i set up an app to be installed using GPO under computer configuration. The most of our computers are using WIFI to log in to our domain. Some of them, they ...
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37 views

Multiple routes from router advertisements

Consider the following simplified setup: All devices are IPv6 enabled. Interfaces are configured in a way that we have 3 networks as shown. Router advertisments are enabled on both routers R1 & ...
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1answer
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IPsec: Can ping hosts of other network with the firewall but not with hosts behind the firewall

I have a endian firewall and a established IPsec tunnel. The firewall is in the network 192.168.100.0/24 and has the address 192.168.100.1. The hosts that I try to ping are in the network 10.4.0.0/32 ...
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Ping devices on local network via PC on Azure VPN

I'm trying to ping a device on a PC's NIC (Ethernet) with a static IP of say 192.168.1.1 (This IP is fixed, it cannot be configured or changed unfortunately) that is connected to an Azure SSTP VPN. I ...
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1answer
148 views

Creating a Zabbix item on the zabbix server to ping agentless host machine where vm (with agent) runs on

We're working with Zabbix (2.4.7), i'm going to call this the zabbix server. The zabbix server has many machines which it is monitoring. The machines have zabbix agent installed on them. The machines ...
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1answer
37 views

Not getting ping response on CentOS server hosted with DigitalOcean

I have a CentOS server with DigitalOcean , i am trying to ping "1c-bitrix.ru" , i am getting the following PING 1c-bitrix.ru (46.235.53.93) 56(84) bytes of data. but there is no response. I tried ...
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1answer
35 views

Pinging IP throws Request timed out but successful response is received on pinging the URL. Which n/w component may be responding to the ping on URL

I'm running a performance test on an application hosted on AWS. To check the network latency I tried pinging the URL which worked. But if I try to ping the IP address of the VM on which the ...
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1answer
17 views

Ping : How to differentiate between Host powered off and MTU too long?

I changed the eth0 MTU size to 1550(using : ifconfig eth0 mtu 1550) and ran ping -c 1 -M do -s 1500 -w 5 {some other IP} and The output I see is, --- x.x.x.x ping statistics --- 5 packets ...
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3answers
108 views

Is RTT theoretically the same regardless of ping origination?

Let's say you send a ping from device 1 to device 2. The result would give you the RTT. Theoretically speaking (because many variables are realistically in play), would the RTT be the same by ...
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1answer
99 views

Why Linux continues to use disconnected ethernet interfaces?

I have a Linux system with two ethernet interfaces, eth0 & eth1, which are used on the same subnet. At times, I see that even when one of the interfaces is disconnected (cable unplugged), Linux ...
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27 views

Tool for searching computer in network and alert after connection

I'm looking for some tool where I can schedule ping loop some computers in my network and after response some alert (email or custom command) will be fired. That tool will be working on Windows 7 ...
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47 views

NFX250 - Device | Unable to Ping Client from other Client in same Network, and with same Vlans

I try to understand, why I can not ping a Client from an other Client in the same Network. I have 2 VNF on my NFX - Device, which are in the same network and have the same Vlan - Id. This 2 can not ...
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1answer
137 views

How did Alibaba find my server and ping my node instence that I just made?

So I just created a new droplet on DigitalOcean and did a http-server in the root directory. 5 minutes later I see this in the logs: GET http://47.99.121.32:39169/Ip/Up?Ip=[my server ip]&Port=...
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1answer
25 views

How to prevent ping from terminating when not initally connected to a network?

Related: How to ping in linux until host is known? On Linux, ping has inconsistent behaviour. If it initially has no network connection, it terminates with the message user@machine:~$ ping 8.8.8.8 ...
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1answer
74 views

Server suddenly cannot ping itself, all other LAN computers can ping it

Today my Ubuntu 17.10 server suddenly lost its ability to connect to its own IP services. It seems to be working perfectly as far as other computers on the network are concerned; for example, other ...
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1answer
28 views

Verifying eth0 still works after adding eth1

I am using the Virtual Machine vmware with ubuntu. I've added a network adapter - eth1 and have assigned an ip address and mac address. but now that I try to connect to the internet, it doesn't work. ...
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48 views

Failure to ping two devices on the same subnet

Need some help with Routing. I do not understand how to make this work I have 2 Devices configured. One of the devices(somebox1) is configured with 2 interfaces and the Routing table looks similar as ...
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25 views

Cannot ping specific DVR on network

I have a WatchGuard firewall as our firewall/router, windows server 2008 R2 standard for DHCP, 2 windows 10 machines and a Hikvision DVR. Machine 1 could see the cameras no problem for about a week ...
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36 views

Mininet+ GNS3: pingall fails + dhcp doesn't work

I'm still a beginner, I'm facing some issues and I need your help. 1 I integrated mininet to gns3 successfully, the mininet VM can ping all the routers and other VMs, Also it can get an address ...
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52 views

Remote Client is unable to connect to TCP Server on VPS (Getting 10060 error)

I have searched all over the internet for the solution. Unfortunately, I could not get any working solution yet. Here is the story. I am running TCP server for small communication application on the ...
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2answers
84 views

How to identify PID of process that is generating lots of ICMP ping requests?

I have a box that is generating lots of outgoing ICMP requests. I am able to see a few happening every second with tcpdump -nni ens192 icmp. However, I don't have anyway of tracing these back to the ...
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1answer
107 views

Hyper-V hosts inconsistent network connectivity

I am having trouble with two of my servers that stopped being able to communicate (in a weird way). Servers are both Microsoft Hyper-V Server 2012 (the ones without GUI). Name: HVS1 Ip Address: 10.0....
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Why didn't an ubuntu host show up when pinging broadcast?

According to this question, I can ping broadcast and then parse the arp table to detect hosts on the LAN ... except that I have a fresh install of Ubuntu 16.04.4 LTS desktop that doesn't show up when ...
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1answer
148 views

Ping Link Local Address

We have an embedded networking device product which we first develop and test on Windows platform. It was observed that based on given conditions the device got a Link Local address - 169.254.106.235. ...
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bridges make ping stall

I had a problem that after connecting to wi-fi ping shows stalling. You can see here intervals of stable ping: I had from 10 to 20 bridges which was produced by docker, I decided to remove all of ...
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0answers
38 views

Sending ARP requests with SmokePing

I have been using SmokePing to monitor my local network for some time now and I'm happy with its graphs and email alerts. I use the fping probe and it works as expected. I found however that, every ...
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1answer
158 views

Connecting using ip address but not using web server name

I am able to access the website of a server (running Linux Mint 18 Sylvia) that uses an http like: http://myserver.house.pckhrest.edu I can not do remote connection to myserver.house.pckhrest.edu ...
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1answer
35 views

Why is this shell command always returning 1?

Here is a shell puzzle I can't answer (bash). This returns exit code 1: ping $HOSTNAME -c2 -W2 2&>1 > /dev/null This returns the correct exit code every time (2, 1 or 0). ping $HOSTNAME -...
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101 views

I can ping only some websites. At my wits end

I have a really strage phenomenon in one of our data centers. I can ping facebook.com, yahoo.com, deb.nodesource.com and a few others (DNS resolution works fine). But I can't ping google.com, archive....
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258 views

openvpn connected but can't ping

I'm currently installing an OpenVPN clent+server to have a remote acces to my server files. I've set up both side, generated the keys and now my client can be connected (with the green icon). Once i'm ...
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609 views

IPv6 Routing: Destination unreachable: Beyond scope of source address

I need a help with IPv6 routing, I have setup a Linux box with a IPv6 interface on eth2, and this interface is bonded with interface bond0 Details as below cat /etc/sysconfig/network-scripts/ifcfg-...
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1answer
260 views

ping to the 4.2.2.2 is not working. what to do?

Network connectivity is good. ping to the 4.2.2.2 is not working. I also want to know why we ping to the 4.2.2.2. ping -n 4.2.2.2
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1answer
1k views

Cannot ping 'server' after it reboots, how can I fix this?

The company I work for is using a Dell OptiPlex Micro PC (running Windows 10 Pro) as a server for some intranet resources (MS SQL Server databases and network licenses for some software). It also ...
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47 views

Which other tools to use if PING fails

I have checked this question and I understand the use of traceroute, but I do not understand why I should use ARP if PING fails. Details: I use Linux machine to ping the servers out of which some ...
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0answers
19 views

Ping sending/delivery to remote server is slow

I am facing some weird issue. I am trying to ping one remote server with 1 second interval. ping packet sending/delivery is too slow ( not response time). See below output. I am facing this issue with ...
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1answer
122 views

Reliable way to check server availability

I am using scheduler/API to scan target machines for Vulnerabilities(Using Nessus). But before the scan starts, I want to check if the servers are available or not for scan. I understand from this ...