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

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1answer
26 views

Default gateway and ARP confusion

I have the following configuration (I'd post a pic but not enough rep for more than 2): PC1 (10.0.2.10/24) and PC2 (10.0.2.137/29) are connected to a hub, which is connected to a router on interface ...
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0answers
25 views

PLC actively refusing connection

I have a problem building a TCP connection between a PC a PLC. In short words: The PLC is waiting for connection attempts of the PC. The PLC has a static IP and two Ports (3011 and 3021) I can ...
2
votes
1answer
70 views

Pinging Hostname results in reply from 2 different IP addresses

I have an odd behaviour on my Windows 2008 R2 server, when I ping a hostname of another system, my first reply has a different IP address then the following replies. For example, if I was to ping ...
0
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1answer
41 views

First ping (to any destination) fails from switch but not from router

I've got a basic network setup, just doing NAT to a single public address to an internal /24 without any VLAN's or fancy routing. Both my router and switch are running Cisco IOS 12.x. My ...
2
votes
2answers
266 views

Cannot ping remote server; how can I debug local networking misconfiguration vs my IP is blocked?

I manage a KVM VPS at 104.143.14.103 that for some reason cannot reach http://pecl.php.net. When I ping the IP address of the PECL server (104.236.228.160), to make sure that it isn't a DNS problem, ...
0
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0answers
4 views

Vmware guests high ping times [migrated]

My host server is Debian 7 running Vmware Workstation 12 PRO. I experience high ping times sometimes to guests: 64 bytes from 10.0.0.50: icmp_req=2198 ttl=64 time=0.255 ms 64 bytes from 10.0.0.50: ...
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0answers
30 views

Is it normal to have unstable ping on local AP

I am about 1 or 2 level better than newbie in networking so i hope i didn't say anything wrong, except for my english. I have AP, TP-LINK TD-W8951ND that connected with ADSL. MY PC1 connected by ...
-7
votes
1answer
22 views

PING COMMAND in QOS enable path [closed]

What is the actual use of ping ? Do the connectivity checking is the only use of it ? In QOS does we can rely on the actual latency that is given by ping command
2
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0answers
31 views

Ubuntu server 15 during ping (DUP!) what does it mean

For some time during ping 192.168.0.2 I have something like this (DUP!) something is wrong with my network card or switch? Image Ubuntu server 15 - *192.168.0.222* Windows server 2012 - ...
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0answers
11 views

Monitoring sites declared that my site is down but after checking the server performance, it is stable and no one reach its limit [closed]

Pingdom/server own monitoring, declare that the site is down, but when we check the server performance report, it is stable. And no one from our resources are reach its limit. The return error is ...
1
vote
1answer
13 views

How to find the initial values of TTL for your current operating system?

In this answer to a question related to interpreting the values of TTL from a ping operation it is said that the TTL values vary depending on the operating system. I understood more or less the ...
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votes
1answer
39 views

Get request IP from dns lookup

I have been looking to find the IP from a machine that asks my DNS server for a CNAME resolution. For example: User A pings to DNS server 1 on test.myserver.com, this server has a CNAME resolution ...
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1answer
23 views

resolve a previously failing url without editing resolv.conf

I want to ping a some website from my machine. But currently its failing to resolve ubuntu % nslookup somewebsite.in ...
3
votes
1answer
58 views

Can't Ping other local ips on l2tp vpn connection, getting: ping: sendmsg: No such device

I have setup an l2tp client using xl2tp to connect to an l2tp vpn server. The server connection requires that the connection be setup WITHOUT ipsec. So I have set up a basic xl2tp connection. The ...
0
votes
1answer
31 views

Find best AWS EC2 zone for given IP address

Is there an easy way to determine AWS EC2 region with lowest ping to given public IP address? There is a server hosted by third party. I only know the IP address of the server. Given that I'm looking ...
1
vote
2answers
56 views

How does Pinging from a private IP behind NAT to a public IP work

Recently I realized that ICMP does not contain any ports, so I tried to Ping from my wireless connected laptop to public IPs(of course it worked!). In a typical configuration, a local network ...
1
vote
1answer
25 views

Why cannot I query DNS with `host -a`, but yes with `host`?

I changed my DNS and I'm having this problem: > host grupoesoc.es grupoesoc.es has address 178.62.234.188 grupoesoc.es has IPv6 address 2a03:b0c0:2:d0::127:6001 grupoesoc.es mail is handled by 20 ...
1
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2answers
36 views

Pinging a host from a router through the selected interface

In a typical Cisco router it's possible to ping a host from the router's OS. When the ping packet leaves router (call it R1) through the fa0/0 interface, the source IP of that packet it set to the IP ...
0
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0answers
45 views

Cannot connect to WebDAV when ICMP (ping) is disabled on a server

I have linux as a Webdav server and Windows 10 as a webdav client. I could successfully connect to the webdav server from Windows using: net use * https://mywebdavserver.com/webdav /USER:user pass ...
0
votes
1answer
48 views

OpenVPN can' reach client Lan

I have a question about OpenVPN, I had made a "dev tun" connection between my office network and a VPC on Amazon.But.... in few words: Everething work, except: i c'ant ping the client Lan from the ...
0
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0answers
55 views

My server doesn't respond to ping6

I'm trying to enable ipv6 on my webserver. The server runs FreeBSD 10 and I'd like to enable ipv6 access to my websites. That's the long term goal. The goal here would be at least to have a server ...
0
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0answers
25 views

CheckPoint UTM-1 Edge does not relay ping reply out of vpn

I have Palo Alto firewall and Checkpoint UTM-1 Edge with established vpn. On Checkpoint UTM-1 device Firewall is off, AntiVirus is off, Security level (low), vpn excluded from firewall. Vpn is ...
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votes
1answer
72 views

What Does “ping -f” Do In The OS X Terminal? [closed]

I've recently read about the command in the OS X terminal, "ping -f (Target IP)". I haven't been able to form an understanding on the command even after looking through numerous online articles. I ...
1
vote
1answer
36 views

I can access http, https on server, but can't ping the server behind sonicwall tz500

I am not sure if this is possible or not. I have set up some web servers and ftp servers that are statically NATted behind a sonicwall tz500. I can access all via ftp, http, https. I have included ...
2
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0answers
49 views

802.1q VLAN echo replies do not include VLAN ID

I am running a SLES11, SP4 kernel on 2 systems. I have 2 NICs connected through a Netgear GS724T switch. I have configured VLAN 400 on the switch. On system 1, I create a VLAN 400 on eth0 called ...
0
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2answers
64 views

Servers can only ping to domain controllers and not to each other

I have made my own test environment and I am having problems with pinging other servers from one server. All servers can ping to domain controllers and they get responded back. When I ping from a ...
1
vote
2answers
49 views

allowing ping packets from specific ip in windows firewall

How do i allow ping packets from a specific ip from my internal network in windows firewall. Whenever, i tried to set custom inbound rules in windows. There does not seem to have a way to achieve ...
2
votes
1answer
89 views

Interpreting PING Results

I am on Windows and LAN using the command line PING in this format: ping -a -n 5 -S <source ip> <destination ip> For the most part, it does what it is supposed to do but I have noticed 3 ...
1
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4answers
587 views

Why am I getting different results from two servers that located in the same destination network?

There's two servers with the same network IP, and the only difference between them is the last two numbers like: 37.211.15.247 and 37.211.166.178. The Hosting Provider claims that the subnet mask for ...
0
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0answers
20 views

Why do i get different results from two servers that located in the same destination network? [duplicate]

There's two servers with the same network IP, and the only difference between them is the last two numbers like: xx.xx.15.247 and xx.xx.66.178 When i try the command Tracert (Traceroute) to test the ...
0
votes
1answer
38 views

Should I expect reception of packets in hping3 --flood?

I'm testing a newly purchased VPS for DDoS vulnerability using hping3. If I do not use --flood, everything goes fine and I see close to 0% packet loss every time. But If I do use --flood, then the ...
0
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1answer
15 views

Write online/offline state to log file

I'm looking for a way to log the online/offline state of a Linux host to a log file locally. I tried to use ping for this but it didn't log timeouts/dropped packages it only shows successful ...
0
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2answers
62 views

2 Lans, 1 router, need to ping eachother ip [closed]

I have 2 LANs: LAN 1 192.168.2.1/24 LAN 2 192.168.3.1/24 I have a device on tLAN 2 with IP-address 192.168.3.61. My laptop is on LAN 1 with 192.168.2.100. My final goal is to ping the device like ...
2
votes
1answer
59 views

Accessing a server with wrong IP out of segment range

I have run into a similar problem as in this question about a wrong IP in LAN. However, the standard addr alias trick on the NIC did not help. I have no direct access to the server console, I might ...
0
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0answers
13 views

Bypass hops viewed in tracert?

This is the issue that we're having: I use filezilla to connect via SFTP to a remote server to download files. Every box in this scenario (local server, remote server, my workstation, etc) are under ...
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votes
1answer
46 views

Unable to maintain connection on servers. Ping inconsistent

We have two new Windows 2012 server installs. These are fresh installs that don't have much on them. However, they are having connection issues with the SQL server. From the SQL server I have some ...
0
votes
3answers
122 views

Put ping parameters as default ping command

I have some problems with ping. As root user i can't ping if i don't put from which interface to go. So if i "ping google.com" it wont ping. But if i ping like " ping -I eth0 " will ping. (Ok is not ...
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votes
3answers
64 views

Server monitoring reports ping failed

i run a dedicated server and my hosting provider sent me an email reporting this and in 20 mins the service is recovering. i am running centos with softlayer Service Issue: SERVICE PING failed for ...
0
votes
1answer
52 views

Ping times change over time only to a certain server

The problem happens only to a certain server from a nearby country. When i test the ping to that server, i get 30-40 ms today, then tomorrow i'll get 240-250 ms. Sometimes, an hour later it'll be ...
0
votes
1answer
57 views

OpenVPN with fragment does not allow internet traffic on Android

Good day all My server config uses a fragment setting of 1000 which I found most optimal for Windows/Linux users pass through, however after adding the same script with supporting certs to Android ...
1
vote
1answer
28 views

How to confirm Nginx `deny` is working?

I setup Nginx to deny a specific IP address and would like to confirm that it is working. How can I do this? In principle, I'd like to do something like: ping -from <blocked ip address> <my ...
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votes
1answer
54 views

Ping can not find any subdomain at all

Following shows the information of my virtual environment. computer name = spFull computer name = sp.spd.localdomain = spd.localInside DNS there is a Forward lookup zone, its name is spd.local and ...
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votes
1answer
179 views

Why a traceroute to a dynamic ip is different from static ip addresses? [closed]

Sorry I can't show you an output of a traceroute atm. Anyways, i find it strange when i try pinging a dynamic ip from the same ISP and get a good route and ping times. Where if i pinged their static ...
1
vote
2answers
100 views

Ping don't resolve www.domain.gob.sv but it does resolve domain.gob.sv on server

I've been with this WEIRD problem on my server. I've been setup a DNS server (BIND) for two domains, but somehow in one of them do not resolve with www. I tried with CNAME an A record with no luck. ...
0
votes
0answers
19 views

Some of my clients report a route change when they reboot\refresh their IP?

I made a gaming server recently that hosted by my ISP. Some clients report a change or improvement in ping/latency times from 50ms to 20ms by rebooting their modem/router to get a new IP address, and ...
2
votes
1answer
72 views

OpenVPN Access Server: Remote Subnet Cannot Access Client's Resources

I have OpenVPN Access Server running on AWS. Here's the configuration: 172.18.16.0/20 Client (172.18.16.101) ----- OpenVPN Server (172.16.0.0/20) | ...
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votes
1answer
27 views

Inconsistent ping to my ISP backbone [closed]

this is a traceroute from My ISP to the same ISP backbone located in another city from my country here (500miles aprox) : http://i.stack.imgur.com/BbQjm.png Does this idicate a traceroute problem? ...
1
vote
2answers
459 views

Cannot ping centos7 host [closed]

I am doing this for the first time, so I may be missing something very basic. I installed Centos 7 on a new server and have successfully gotten the connectivity working. Now I want to be able to ssh ...
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votes
2answers
384 views

Ping PC in Different Subnet / Network [closed]

I am new to practical aspects of networking. So what I was trying is to ping two PC which are connected to two (wireless) routers which are taking internet through LAN. So Router 1 IP : 10.100.98.25 ...
1
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1answer
41 views

Possible route, but denied?

If ISP (A) can be routed to ISP (B), and ISP (B) can be routed to ISP (C) and vice versa, then why ISP (A) and ISP (C) can't be routed through ISP (B) to each other? The packets are routed like this ...