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:

Quote:
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

[Code]....

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Ubuntu Networking :: Suddenly Lost Ability To View Webpages

Apr 3, 2010

I should have poked around a little harder but I remember that I was experimenting with an ssh proxy when a the hotel. Apparently when I setup the proxy settings in Chrome I must have clicked the "set system wide" button and set every browser to browse through the proxy. I even had to enter a password to change that setting. I thought I changed it back after experimenting but apparently I did not. Today I just started my Ubuntu 9.04 laptop to find that I can not browse web pages. I tried multiple browsers including Chrome, Firefox and Epiphany. Each one gives me the same error message:

Epiphany:
"www.google.com" dropped the connection.
The server dropped the connection before any data could be read. The server may be busy or you may have a network connection problem. Try again later.

Firefox:
Connection Interrupted.
The connection to the server was reset while the page was loading. The network link was interrupted while negotiating a connection. Please try again.

Chrome:
This webpage is not available.
The webpage at [URL] might be temporarily down or it may have moved permanently to a new web address.

So now most of you are ready to ask me to check my connection using ifconfig etc. But here is the rub: I can download updates, install software using apt-get, ssh, scp, download files with wget, ping web sites and browse the net using the text browser Links (so pretty much everything else works.) I cant figure out what has happened. The last time I used my laptop was this past weekend in a hotel using their wireless and then connecting using a captive portal. And everything worked fine.

My only theory is the hotels captive portal might have messed up something but what that is is beyond me. I tried using both wired and wireless connections and still the same thing. Re booting does nothing. So in order to surf the web I have to use my virtual box Windows XP image. So here I am typing this message in Firefox on windows XP in a virtual machine on my Ubuntu laptop that for some reason will not let me view websites.

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Jul 2, 2010

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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 (10.5.0.0/24) . The server address is
10.5.0.1. 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 @ 10.5.0.2) with no firewall enabled. The remote VPN clients can ping this webserver at 10.5.0.2, 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.

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The server configuration is:

local 192.168.10.6
port 1194
proto tcp

[code]...

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Code:
ken@ken-desktop:~$ lsusb
Bus 005 Device 002: ID 046d:c517 Logitech, Inc. LX710 Cordless Desktop Laser
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Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
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Code:
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Code:
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Code:
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452 sudochmod 777 /usr/
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Code:
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guy0203@guy0203-laptop:~$

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