1
vote
1answer
201 views

ping -a sometimes returns host name and sometimes returns FQDN. Why? Does this mean DNS is corrupt somehow?

I have a Windows machine called abcd for example and it uses DHCP to receive an IP address (172.28.45.5 for example) When I perform ping -a 172.28.45.5 sometimes I receive abcd as the hostname. ...
0
votes
0answers
88 views

Unable to ping one machine on the network

I have one machine on the network that can't be pinged (by name or IP) or accessed with WMI by other machines on the network. So far I have tried: Disabled firewall and AV Put onto a workgroup then ...
3
votes
2answers
2k views

IP address used by nslookup and ping is different

I have a web server hosted in the network. It has a domain name registered. However, I also host a DNS server for the LAN. So, when someone wants to access the web server, it would check the DNS ...
2
votes
3answers
143 views

Odd ping result on network

Can anyone explain why when I ping 192.168.23.019 it gives me a reply from 192.168.23.17? Then If I ping .23.19 I get a request timed out reply. But I can RDP onto .23.19 These are virtual machines.. ...
1
vote
2answers
4k views

PING: timed out, host unreachable and succes all at once

Is there any logical explanation for this output? I can understand all of the three different results, but all three in one single run of PING? Could my router be defective? I have no internet ...
1
vote
2answers
770 views

What does this output from HPing mean?

hping command: hping3 -G --rroute $domain -i u1000 Result: len=80 ip=127.0.0.1 ttl=64 DF id=0 sport=0 flags=RA seq=176 win=0 rtt=0.2 ms (same route) len=80 ip=127.0.0.1 ttl=64 DF id=0 sport=0 ...
2
votes
2answers
6k views

Anyone know of a free flood ping utility for Windows? [closed]

Does anyone know of a free ping flood (some people call it flood ping) utility for Windows? I want something portable that I can install anywhere. I use ping flooding to primarily test for packet loss ...
2
votes
3answers
635 views

Can ping server but no telnet or www

I have a NAS (iomega home media 1TB) plugged in router using 1Gb ethernet cable. Occasionally I lose access to it, I can ping it by static ip, nmap to see all open ports but can't telnet to it. Also ...
0
votes
4answers
168 views

Is asymmetric latency common in practice?

This is a follow-on to a question posted on stack overflow about whether it is possible to determine the one-way latency of a point to point connection without using externally synchronized clocks - ...
2
votes
4answers
6k views

Ethernet Loopback plug - running a ping

For a project at work, I need to be able to test various Ethernet NICs by connecting them to a "loopback adapter plug", like this one on various embedded Linux boxen that come off a production ...