Fedora Networking :: VM Can Ping Host And Internet But Host Can't Ping VM

Jan 19, 2010

Host - Fedora 12 64bit
KVM
VM - Windows Server 2008 64 bit
bridge-utils

VM can ping host and Internet but host can't ping VM.

I set VM static IP 192.168.0.205.

It turns out dynamic IP - 192.168.0.55

On host:

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Networking :: Debian 5 - After SysCp Installation And Configure Ping Valure - Ping - Unknown Host

Jul 9, 2010

Ive got a problem on my server ....installed Debian 5 , Webmin and than syscp settung up syscp ready ....

I try to ping "localhost" ansver ping: unknown host
I try to ping "localhost." there is a host with IP 127.0.0.1

I need it to change it in "localhost"

Is that the bind9 maybe?

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General :: Ping - Gives Unknown Host Error - Ping To LAN Address Works Fine

May 13, 2011

Even ping google's ip address doesn't work. unknown host error using backtrack4 able to browse net with these settings.

My network settings:

What's the problem with these settings...

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Fedora Networking :: F13 Unable To Ping External Host From Behind Proxy

Aug 17, 2010

I can ping a host on my LAN successfully, but I cannot ping [URL]... for example. I have disabled the firewall and set http_proxy and can browse the internet with "Use system proxy settings" checked in Firefox. I am unable to update with yum either, but I am not sure if this is a side effect or not. I have run a trace on my ip address as I am browsing the internet and I can see the sites I am visiting on our web appliance. However, if I try to ping or update no requests are hitting the proxy so I don't think that is the issue.

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Networking :: Host Can't Ping VM?

Jan 19, 2010

Host - Fedora 12 64bit
KVM
VM - Windows Server 2008 64 bit
bridge-utils

VM can ping host and Internet but host can't ping VM.

I set VM static IP 192.168.0.205.

It turns out dynamic IP - 192.168.0.55

On host:
$ ping -c3 192.168.0.55
fails

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Networking :: Ping A Host Using Different Source Ip?

Sep 26, 2010

I made an ip packet using raw sockets and used icmp header of echo request inside that ip packet.I have a wifi lan with 2 host(laptops) connected to it. when I send the packets to any of these host the reply me with echo reply as i see in wireshark. but when i change the source ip and mac to that of another host there is no echo reply packet in the network but only echo request packet is there. Can anybody tell me why is this happening. and am also using Promiscuous mode so non of the packet is discarding.

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Networking :: No Route To Host - Put Can Ping?

May 9, 2011

I have a server that I can ping, and I can connect remotely with ssh to it. But when I try to connect to apache (port 80) I get "no route to host". But I can connect to localhost It's not just my client system that is having this problem but also systems that are on the same subnet There is no firewall running on the server route on the server

[Code]...

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Ubuntu Networking :: Can't Ping URL - Unknown Host

Apr 5, 2010

I am using ubuntu 9.10 and I still cannot figure out this thing. I work behind a proxy managed by my university. Now, I cannot ping the other users on my network although they can ping me. Not to mention, I also cannot ping [URL]... It says : ping: unknown host [URL]... But I can ping the proxy server.

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Ubuntu Networking :: Cannot Ping/network To Host On 2nd Nic

Aug 11, 2010

I have a somewhat complicated network setup that I am testing on an internal network. I have the following route setup:

PC Client (192.168.2.100) --> Router (192.168.2.1) --> DSLAM (on our internal network) --> PPPOE Server (192.168.9.1) on Linux Ubuntu 8.04 on interface card eth2.

On the same Linux Ubuntu Machine on interface card eth1 (static IP 192.168.5.100), I have an Asterisk SIP server plugged into it. SIP Server = 192.168.5.101 (static) I need the PC client (192.168.2.100) to register via SIP soft phone to register on the SIP server (192.168.5.101). From the PC client I can ping as far as the eth1 interface (192.168.5.100)...but cannot ping the SIP Server (.101).

From the SIP server (192.156.5.101)...I can ping 192.168.5.100, I can ping 169.254.5.228 (Eth2:avahi), but not sure what that is. I cannot ping the pppoe default gateway (192.168.9.1), which I think you cannot anyway. No firewalls are running. My IPtables I cleaned out totally. I think it might be as simple as a route add, but I really have no clue. Tried building a virtual bridge using brctl LINUX betweeh eth1 and eth2, but that made things worse (could not ping anything after that)

Route table:

Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.9.100 * 255.255.255.255 UH 0 0 0 ppp0
192.168.5.0 * 255.255.255.0 U 0 0 0 eth1

[code]...

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Ubuntu Networking :: Internal DNS - Ping Host On LAN?

Dec 28, 2010

If I try ping a host on my internal lan from my ubuntu notebook the host name never resolves, but if I ping www.domainname.xxx it will resolve because our dhcp server is setup as the dns server too. If I use the connect to server tool and select samba share and specify host by name, it can resolve that and the shares show up... same dns server, same machine, but different interface/program. My real reason behind this is because my synergy+ keeps falling over whenever the synergy servers dhcp lease expires and it gets a new I have to then specify the new address and change configs.

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Networking :: Host And Ping Command Not Working

Feb 28, 2010

I am working behind a http proxy (172.30.x.x:3128). I have configured it in my terminal. All the applications such as wget,lynx firefox etc. are working correctly.However all dns utilities like nslookup, host and even ping too are not working.Following is output of host command:

Code:
root@ding:~# host google.com
;; connection timed out; no servers could be reached
Output of host -T:

[Code]....

To connect to net I have to first run dhclient3(learnt from this forum!).It gives me my ip but where is dns address sent I don't have and idea.

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Networking :: Not Able To Ping External Network - Host Name Resolving To Ip

Jun 15, 2010

I had configured Squid in RHEL 5 and facing an issue with pinging. Not able to ping any website,hostname is resolving to ip address but not able to ping

[code]...

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Fedora :: VirtualBox Ping From Guest To Host?

Dec 9, 2009

I have VirtualBox v3.1.0 r55467 running on f12 2.6.31.6-162.fc12.i686. The guest is Windows XP SP3. I need to enable bridged mode for the virtual network interface on the guest. Everytime I enable bridge mode the following error occurs.

Quote:

Failed to start the virtual machine Windows XP. Failed to open/create the internal network 'HostInterfaceNetworking-wlan0' (VERR_SUPDRV_COMPONENT_NOT_FOUND). One of the kernel modules was not successfully loaded. Make sure that no kernel modules from an older version of VirtualBox exist. Then try to recompile and reload the kernel modules by executing '/etc/init.d/vboxdrv setup' as root (VERR_SUPDRV_COMPONENT_NOT_FOUND). When I run '/etc/init.d/vboxdrv setup' i get the following compilation error:

Quote:

Stopping VirtualBox kernel module [ OK ]
Removing old VirtualBox netadp kernel module [ OK ]
Removing old VirtualBox netflt kernel module [ OK ]

[code]....

dmesg gives me nothing. I have scoured the web .. and even asked on #vbox and #fedora cant get.

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Ubuntu Networking :: Dig Works But Ping Shows 'unknown Host'?

Dec 4, 2010

I've encountered a problem after doing a fresh install with xubuntu 10.10 (2.6.35-23-generic).some sites are blocked like [url]....if I do dig [url]....- I receive the A, CNAME records and the IP address and everything.when ping[url].... - I receive 'unknown host'.when ping <theipaddress> - I receive responses

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Networking :: 3 NIC - Router - PC Cannot See My Laptop And Vice Versa - Cannot Ping - Host Seems Down

Jan 25, 2010

I have a machine running linux with 3 ethernet interfaces attached.

My Ifconfig:

My route output:

eth0 is attached to a laptop, eth1 is attached to a PC. eth2 is attached to a DSL modem, and the server is successfully acting as my internet gateway. The trouble is, my PC cannot see my laptop and vice versa. E.G. cannot ping, host seems down.

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Networking :: RHEL 5.4 Can't Reach Any External Host Or Even Ping Localhost

May 27, 2010

This is a RHEL 5.4 install. I did a fairly routine install setting up a static IP address of 10.5.96.10, a subnet mask of 255.255.254.0, and a gateway of 10.5.96.1 with the standard DNS setup for this network. These are all standard network setting for this network and otherwise work fine on other systems. The IP, gateway, and subnetmask all appear correctly on all relevant configuration files. This server can not ping any other system on the network and can not ping its default gateway. No other systems can ping this one either. Also this system can not ping "localhost" or its own hostname. The hosts file contains the line:

[code]...

I can ping 127.0.0.1 and 10.5.96.10 and it works fine. Also the firewall is disabled. I know I probably can't get a straight forward fix with the information I have on hand right now, I'm more of a Debian guy, so there might be some Red Hat intricacies I'm not familiar with. I think I had a CentOS install some months back that had this issue and I don't remember how I fixed it, or if I even did. I might have just replaced it with Debian. That's unfortunately not an option this time around since it's not my box.

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Ubuntu Networking :: Ping To Offline Host Returns Arbitrary Ip Address?

Mar 17, 2011

A brief description of my network:It is a small home network consisting of an Ubuntu 10.04LTS server edition, an Iomega ix2 NAS, a WinXP pro server and several family laptops.This is all routed through a Netgear WNDR3300 home router. All are assigned IP's via DHCP and all but the laptops are static (via DHCP though). The WAN address/DNS is assigned via DHCP from my ISP.The problem:When one of the machines is offline, Ubuntu does not resolve the netbios name correctly. No surprise here. But what is happening is that it is finding some arbitrary machine on another network. Below is what a ping to an offline host reveals:

Code:
ping -c3 hostname
PING hostname (204.232.162.92) 56(84) bytes of data.

[code]....

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Networking :: Unable To Ping Host From OpenVPN Client After Port 22 Denied

Mar 28, 2010

After I applied below iptables rule.. I am unable to ping the host in 172.16.1.0/24 from OpenVPN client

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Networking :: Cannot Ping With Command - Ping IP - Address But Can Ping With - Ping IP -I Eth0

Jul 15, 2011

I am using an virtual machine. where I need to ping from one machine to another. earlier I was able to ping. But after going to google.com once, I cannot ping back to this machine.

But if I gave ping -I eth1 <IP> then I can ping.

I cannot install any package, so tell me solution which includes not installing any package.

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Fedora Networking :: Connectivity Between Two Different Live IP Based Systems - Ping Error: "Destination Host Unreachable"

Aug 26, 2009

I have 2 live IP based Linux systems .

[Code]...

Both systems connected in same LAN based network . Both WAN live ips are connected through different modems. Problem is that , no system is able to ping or connect with other system with Live ip , though they are able to connect through LAN ip and both systes are accessable and also able to browse internet (google etc..) Ping error :-- Destination Host Unreachable.

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General :: Ping From Guest Os To Host Os?

May 12, 2010

i have installed virtualbox on centos , and installed xp as a guest os. my LAN is on 10.200.2.x/24 network inorder to avoid conflict i have given centos ip as 10.200.2.191/24 and a virtual ip 192.168.56.4/24 my gateway is 10.200.2.1 i am able to ping from my guest os to host os the ip address but not the gateway inorder for internet connectivity

some of the configuration of virtual box

Display
Video Memory:
16 MB
3D Acceleration:

[Code]....

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Security :: How To Enable ICMP Ping For One Host Only

Dec 9, 2010

I need to allow ICMP ping for one host only. I found out how to enable it to all hosts (ICMP Filtering, check ping) but I would like to reduce the scope to one host. I know I can add rules in the user_post script but I can't find the correct iptables command ...

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OpenSUSE Network :: Host Names Cannot Be Resolved Except For Ping

May 5, 2010

I'm running openSUSE 11.2 (Linux piura 2.6.31.12-0.2-desktop #1 SMP PREEMPT 2010-03-16 21:25:39 +0100 x86_64 x86_64 x86_64 GNU/Linux) and have a network problem. At work, ethernet works fine. When I plug it into my DSL router at home (which works with other computers), I encounter the following behavior: ping can resolve host names, however, traceroute and Firefox and Thunderbird cannot.
It happens for both wired and wireless connections.

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Ubuntu Networking :: "Redirect Host" In Ping Messages?

Sep 21, 2010

What does these messages in PING mean?

Code:
PING 192.25.141.248 (192.25.141.248) 56(84) bytes of data.
From 192.25.141.229: icmp_seq=1 Redirect Host(New nexthop: 192.25.141.248)

[code]....

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Ubuntu Servers :: Cannot Ping Host From Guest Using Vmware Server 2 / Fix It?

Apr 25, 2010

Not sure if this post belongs here, but here it is.

Host: Win server 2003
Guest: Ubuntu server

Host: IS able to ping guest. Firewall is OFF. NOT able to access guest (which is a web-server) at browser.
Guest: NOT able to ping host. Running a web server, you can check the website: (pegajosa.com) is running under that virtual Linux server.

Problem: guest needs to access host's sql database and/or any resources.

Network: is bridged.

At the Linux box ifconfig -a code...

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General :: Cannot Access/ping Debian \ Gives Destination Host Unreachable?

Nov 27, 2010

I cannot access/ping my Debian server. I know the IP is right (ifconfig, route and ip addr) all gave me 10.0.2.25 (route gave me 10.0.2.0).I cannot ping it from any computer in my netwerk, even when I try to ping it from my Debian itself, it gives me Destination Host Unreachable !(Wierdly, I can ping 10.0.2.2 tho).I am using virtualbox when the netwerk options 'NAT' turned on. When I look at my /etc/network/interfaces/ the last line looks like:iface eth0 inet dhcpShouldn't their be some other stuff listed?

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General :: Bash Script That Read From File And Ping Remote Host

Feb 13, 2011

Q=What will this do?
A=This will read from /root/Desktop/iplist (or anywhere you want to put the list) after it reads the ip it will ping the ip two times. If the remote host is up then it will write the ip to a log. If the ping fails it will display it on the screen, write the ip to syslog so that you can do remote logging, and last it will send the ip by email to a user or a group of users.

Code:
#!/bin/bash
#wrote by Zach Underwood feb-12-2011
#test and wrote on centos 5.5 with sendmail
rm -f /root/Desktop/iplog #This will remove the good iplog
exec 9</root/Desktop/iplist #put full path the file where ip list is. Make sure that the ips are listed one per line.
while read -u9 ip
do
ping -c 2 $ip > /dev/null 2> /dev/null # ping and discard output
if [ $? -eq 0 ]; then # check the exit code
echo "$ip is up" >> /root/Desktop/iplog #write the ip of the hosts that are up
else
echo "$ip is down" # will show on the screen the ips that are not up
logger -p auth.notice "$ip is down" # will write the down host to syslog
echo "$ip is down" | mail -v -s alert user@anydomain.com > /dev/null 2> /dev/null #will send mail users about host down
fi
done

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Server :: Error: No Route To Host" Both Systems Ping Each Other And Firewall Is Also Disabled

Feb 2, 2010

using redhat on server machine and open suse on client machine.i have installed nfs server and and it is running properly but when i want to mount shares from my client machine it gives the following.

error. "mount.nfs: mount to NFS server '10.3.31.146:/share' failed: System Error: No route to host" both systems ping each other and firewall is also disabled. another problem is when i remotely access from my server machine to client machine it gives the following error ssh:connect to host 10.3.31.147 port 22:connection refused what can be the problem?

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General :: Connecting To Network - Other Host Cannot Ping - Eth0 Not Showing In Ifconfig Report - Ver1.qu1

Jan 13, 2010

i know this is crazy, but im using a [URL] and have loaded a copy of "red hat linux 7" on the computer. i have no idea what kind of hardware config/spec stuff i should have in my immediate vision, and if i did i'm not sure how i would make sense of it all. linux loaded fine. didnt save drivers. eth0 not showing in ifconfig report, but lo is connecting to network, other host cannot ping linux and vice versus

can mount a cdrom, but not a usb flash dont quite understand how the load methods work involving /mnt/cdrom/"usbutils-0.86tar.gz" eth0 problems and gnome rpm stupidity keeps me from upgrading sys from old version to a newer version, cant even find the cmd to show me that info, sorry. have usb files i want to mount, dont know how to loAD THE CDROM FOLES, SO EVEN THAT ISNT WORKING OUT HAVE DISCS WITH howtos just need to stay focused on steps to get desired end result, while trying to learn too much info for what im currently doing between all the f!@#@ing windows i have open.

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Fedora Networking :: Xp Can Ping 10 - But Can't Ping Xp

May 21, 2009

I have connected xp and fedora through crossover cable . xp has ip address 192.168.0.1/24 (manually assigned) fedora has 192.168.0.2/24 with default route equal to 192.168.0.1

I can ping fedora from xp computer but i can't able to ping xp from fedora computer.

I have manully edit the /etc/sysconfig/network-scripts/ifcfg-eth0 file with correct subnet mask and ip address because when i tried to give ip address manully in network manager the subnetmask is replaced with gateway address don't know why.

Now i want to share internet through crossover cable . xp is connected to internet through wireless usb adapeter.

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