CentOS 5 Server :: Cannot Ping Webmail Address Inside Proxy

Dec 23, 2010

I am using CentOS 5.5, I installed squid3 in that machine. From my users machine i am not able to use our webmail address. Outlook shows pop3 error.cannot ping webmail address inside proxy.

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Server :: Squid Block Webmail / Can Not Access The Webmail?

Nov 24, 2010

I am using squid proxy in my office , now I can not access the webmail url is url.

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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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Server :: Binding Of IP Address To Its Mac Address In Squid Proxy?

Jun 3, 2009

I want to know how to bind Ip addresses to its mac addresses in Squid Proxy

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CentOS 5 :: Proxy Configure Setting - Cannot Ping Any Website

Aug 4, 2009

I am trying to install a router on my CentOS 5 box, while i have properly configured IP address, Subnet, Default GW and DNS, I am at the point of trying to set up the Proxy. I have added a line: "proxy=http:ip_address:8080/" to the file of "/etc/yum.conf" The Proxy server here does not require any username nor password however I still cannot ping any website, while I tried to ping (google.com) it returns the following message:


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CentOS 5 Networking :: Unable To Ping - No Reply From Certain Address While Others Work Ok

Jun 25, 2009

I run an centos server. From the console I can ping google.com and get a reply. But when I ping another address say xyz.com, the IP address is resolved ( but there is no reply. In the same network in our office from my desktop I ping [URL] and there is a reply.I turned of the firewall but still the same problem.

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CentOS 5 Server :: Centos And Xen: Lan Error - Vif0.0: Received Packet With Own Address The Source Address

Jun 18, 2010

I installed the Centos 5.5 and after the Xen. After I put a virtual machine named VM01.Initially it worked properly, I tried everything and it worked.When rebooted, I had problems with the network.I have two network cards eth0 and eth1, but eth1 does not have any ip and I use only eth0.The error that appears is:

vif0.0: received packet with own address the source address

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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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CentOS 5 Server :: Install Xp Inside Centos Then At The Beginning?

Dec 31, 2009

somebody please tell me whether it would be all right to install xp inside CentOS using VMware or it's better to do vice versa if it is ok to install xp inside centos then at the beginning when i install centos should i allocate all hard disk to this OS and later give some to xp , or initially i should keep some space for xp and install centos in the rest ?

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Server :: Squid Proxy Access List Configuration On MAC Address Basis?

Aug 24, 2010

I am using Redhat 5.3 , I configured well access list using IP address, but my customer want to access list on MAC address basis.

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Ubuntu :: Webmail / Install And Configure Webmail Package?

Oct 7, 2010

I have successfully configured a local imap mail server following these instructions: url

Now I would like to make it available via webmail too.Is there an easy to install and configure webmail package?

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Debian :: Can't Ping Mythbox Inside Network

Jan 8, 2011

I have set up a MythBox on Debian Lenny. I have a wireless connection using a Belkin USB WiFi Device. I am using ndiswrapper, wpa_supplicant, etc. I am using a static ip address. I have internet access without problems. However, if I try to ssh in or even ping my mythbox inside my network there is no connection. I have never had to do anything special to ssh into debian in my network before. I am confused that I have an internet connection but can't get a ping reply.

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Networking :: Linux Router / Config Should Be Done On The Box So That IPs Inside The LAN Can Be Ping From The Internet?

Mar 4, 2010

I am using centos box as a router. WAN side has a public ip and lan side also using a public ip. I configured dhcp server on the LAN side and it is working perfectly, pcs on the LAN side can able to access the internet.

Problem: Considering the fact that LAN IPs is using Public IP and it is presumed that from the internet it can be able to ping IPs inside the LAN but, alas, it couldn't.

No firewall has been config!

Question: What config should be done on the box so that IPs inside the LAN can be ping from the internet?

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CentOS 5 Server :: Ipt_Sysrqd To Reboot A Server By Ping

Apr 26, 2009

I see this site: [url]

That explain how to reboot a freeze system by remote with only make a ping in other machine.

Well I want to know if that module is compatible with my centos 5 because it appear that run in kernel 2.6.X. is compatible ?

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CentOS 5 Networking :: Cannot Ping Server From Outside?

May 20, 2009

I have configured (bind) my server with multiple static IP. I can ping the main IP from outside but not the other IP . I can ping all the IP from localhost but not from the internet. I do not have any external firewall or blocking device. server is directly connected via modem. If anyone could advice me for why i cannot ping other Ip's

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CentOS 5 Networking :: Can't Ping DHCP Server Even Was Able To Get An IP From It

May 7, 2010

I have installed Centos 5 on a virtual machine (esx4i). I set it to obtain an IP address from the DHCP sever, which is a broadband router, it has been given an IP address of the router is but I can't ping the router and I can't get any access to the network! I have a SCO Openserver server on the same physical box and it works fine so I know the network card & cable is ok.

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General :: Ping When Behind A Proxy?

Aug 13, 2010

I am using an HTTP proxy server to connect to the internet.

Because of that my pings are not working

ping www.google.com

says Unreachable Host

How can I configure ping to use the HTTP proxy?

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Networking :: CentOS-5 Server Cannot Ping Default Gateway

Jul 2, 2010

I posted it on another forum, but could not get response,So I have this cenOS, Ubuntu and windows operating system running on virtual machines.Now I gave them manual ip address, both ubuntu and windows machines can ping the default gateway, but not the CentOS.It should forward to my cisco router address(,

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CentOS 5 Server :: Webserver Not Able To Ping Or Browse To One Particular Website

Nov 11, 2010

I have 4 centos5 apache webservers all on the same network, recently, 2 of the webservers have stopped being able to ping or browse one particular website where feeds are obtained from this site. I have checked and firewall and selinux settings are disabled. The two webservers are able to ping and browse other sites. Dns settings are the same for all 4 servers. traceroute for working and not working webservers are the same.

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CentOS 5 Server :: 5.6 - Reverse Proxy With SSL

Aug 24, 2011

I've been struggling with this for a couple of days now. I'm trying to setup a reverse proxy with SSL. The config works when it's not using SSL, but as soon as I setup the virtualhost for 443, I get a ERR_CONNECTION_REFUSED in my browser.

The setup is that it's a CentOS 5.6 running Apache 2.2.3. I was configuring it via this guide: [URL]

This server is acting as a reverse proxy for a Windows server running Apache. Currently, I'm just trying to get the manager page from the Windows server to go through the reverse proxy. Here's the virtual host section of my httpd.conf file on the reverse proxy:

<VirtualHost *:443>
ServerName aspwebview.vtinfo.com
SSLEngine On
SSLCertificateFile /etc/httpd/ssl/star_vtinfo.com.crt


Thoughts? Is there anything I have to do on the Windows server (maybe in the connector section of server.xml)?

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General :: Ping Gateway Using Proxy

May 6, 2010

I am accessing internet through Analog Proxy. ADSL modem has been connect to one of windows xp machine and by running Analog proxy, we uses internet by mentioning that machine's ip address. But how do i ping the default gateway in this case? Is it possible or not? If yes then please tell me how, because if i says # ping <anysite.com> it not pinging; its says host unreachable; means i will not be able to run wget too.

I am trying to ping from OEL 5.3. In one of google link; i read that :Does PING work through the Proxy Server? No, ping uses the ICMP protocol to communicate. Proxy only supports TCP and UDP packets. Ping will resolve the DNS name but go no further.

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CentOS 5 Networking :: Can Ping Server Network But Cannot Share Resources

Feb 15, 2010

I have OpenVPN running successfully on a CentOS Linux server. All remote clients connect without a problem and can ping the server LAN ( . The server address is All network shares on the server are available to the remote clients via SAMBA shares and this works well.The problem is that I am unable to get the remote clients to access services on the LAN clients. For example, there is a webserver running on a Windows XP PC (on the server LAN @ with no firewall enabled. The remote VPN clients can ping this webserver at, but cannot browse the webserver at [URL]. All clients on the server LAN can however browse the webserver. The remote clients are using Windows XP and VISTA with OpenVPN 2.1.1.

I am new to VPNs and networking, but from my research, it seems as if this may be a routing issue. I would appreciate any help you may give in getting the remote clients to access the services on the LAN clients (other than the server @

The server configuration is:

port 1194
proto tcp


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Server :: Proxy In CentOS - Find The Location?

Aug 22, 2010

While configuring the yum through proxy i was configures with some address(10.x.x.x). after the proxy address has been changed(172.x.x.x).according to new proxy address i made changes in all locations in my system. but when i am trying to download through command line still it is trying to connect old proxy address(10.x.x.x). finally i come to know that, still some location old proxy address(10.x.x.x).is there. how to troubleshoot this issue.(how to find the location) i was try to debug find the output below


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CentOS 5 Server :: Yum Update Error Behind MS Proxy

May 5, 2010

I am attempting to use yum behind a MS Proxy. I am receiving the following error:

#yum list
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
http://mirror.centos.org/centos/5/os/i386/repodata/repomd.xml: [Errno 4] IOError: <urlopen error (-2, 'Name or service not known')>

Trying other mirror. Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again I beleive the yum.conf is configured correctly:


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CentOS 5 Server :: FTP PROXY Cache - Never Managed To Run

Apr 9, 2011

My past few weeks trying to cache the use frox, but never managed to run frox correctly. I need a guide for installation frox (ftp proxy or otherwise) that I can understand, because I'm still just learning. I use a superbly managed using squid for web proxy using port 3128

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Server :: Internal Only Webmail Server / Can't Get Authentication Setup?

Nov 7, 2010

What is the fastest setup to do this? All I want is an internally authenticated webmail server that other servers can send mail to for collection of test emails. Don't need LDAP or anything fancy, just a internal LAN only webmail server. I've got Squirrelmail setup on Ubuntu Server and can't get authentication setup with Squirrelmail and every tutorial I read is way over complicated or has nothing on how to authenticate Squirrelmail with internal, system users.

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CentOS 5 Server :: Qmail Server Is Not Notifying Email Address Does Not Exist

Oct 27, 2010

One of our client having issue with the qmail. The issue is if any one send email to abc@ourdomain.com (abc@ourdomain.com the email address which is not exist) it should send failure notification i.e."email does not exist" to the sender. The qmail server is not notifying that email address does not exist.

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CentOS 5 Server :: Pacemaker - Ping The Gateway To Avoid Split-brain?

May 26, 2010

I've set a two-node cluster using Pacemaker/OpenAIS. I have only one network and if I break this one, the communication between node is interrupted ... With a ClusterIP resource, when network is breaked, then each node start the ClusterIP => 2 same IP .. Is there a way to define the prefered location of a resource when connection between these nodes is broken ?

A <==> B

If one of the node lose the network, then follow a previously written rule : start resource on A (for example). B will know than it's not the prefered node and so, will stop to serve. Possible ? This is because if both node are connected, but a problem between these node occur and client can join both node ... then the split brain is problematic ... A better solution is to add a rule when the split-brain occurs : all node wich can't reach the gateway have to stop all resources ... And so, if it's A wich lose the network, service will start on B and only B without any problem ...

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CentOS 5 Networking :: Lost The Ability To Ping/ssh/http Remote Server?

Dec 21, 2010

Some time yesterday, I lost the ability to ssh my remote server, or even visit any webpages it hosts.

I've explored hosts.deny, /var/log/secure and even turned iptables off to see if it would fix anything. To no avail. Here's what my ssh login attempt looks like:

localhost ~ $ ssh -vv x.x.x.x
OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009
debug1: Reading configuration data /etc/ssh_config
debug2: ssh_connect: needpriv 0


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General :: Configure Squid Proxy Server In Centos 5.5?

Apr 12, 2011

how do i configure squid proxy server in centos 5.5 final text mode only to block facebook from 9am to 4pm

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