Ubuntu Servers :: Openssh Refusing Connections From Outside?

Sep 11, 2010

When ever I try to sftp or even ssh into my server I get connection refused.

I have the port forwarded in my router.

What am I missing?

Also I have installed Ngnix so what do I need to do for it to work?

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Ubuntu :: Server Refusing Web Connections After Update

Jul 22, 2011

I ran an update on ubuntu server today, and after a long install process, it spat out an error, telling me to run "sudo dpkg --configure -a". After I ran that command, I was no longer able to access my website or forum. I could really use some help with this one, I've tried so many things including disabling shorewall, restarting apache, so many things...

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Debian :: Privoxy Is Refusing All Connections?

Feb 3, 2011

Since I cannot upgrade Adblock Plus anymore because iceweasel is too out of date for the new versions, I am trying to give privoxy a try. I am following the howto Block Ads & Fast Caching w/Privoxy +Squid without success. I am always receiving the error:The proxy server is refusing connections Iceweasel is configured to use a proxy server that is refusing connections.Check the proxy settings to make sure that they are correct.

I added these lines to /etc/privoxy/config
enable-remote-toggle 1
enable-edit-actions 1

Moreover, I have edited the /etc/hosts file to block urls providing adverts and anything I wanted rejected.

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Ubuntu :: Computer Randomly Starts Refusing SSH Connections?

Jul 20, 2010

The ssh server is running Xubuntu 9.04. It was working before. Then I tried SSHing today and it gave me a connection refused. The computers I've tried SSHing from were running Ubuntu Netbook Remix 10.04, MacOS, and Solaris 10. None of them would connect. The ssh server is running the latest version of openssh-server (according to apt-get install). I'm assuming something in /etc/ssh/ got changed but I'm not sure.

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Fedora :: Firefox Can Not Connect To Anything - 'proxy Server Refusing Connections'

May 11, 2011

I use Fedora 14 and Firefox as my web browser. I use Astrill VPN service. I have the following persistent problem: I start my computer. Astrill is not set to start on boot. I start Firefox. Firefox can not connect to anything, it says 'proxy server refusing connections'. I go to Edit>Preferences>Advanced>Network>Settings I click the radio button 'no proxy'. The problem remains. I am completely unable to connect to the net. Even on reboot, I cannot connect. On reboot, Firefox is set to use a proxy, although it was not on shutdown. Some init script is setting this. My normal connection is often faster than through Astrill, so I only really need to use it when I want to get at a website that is blocked by the govt here in China.

where Firefox is being told to use a proxy, and how to reset it to not use a proxy, assuming Astrill is not active. There must be something left in a .conf file somewhere which is overriding the settings in Edit>Preferences. Because, if I set it now to 'no proxy', I cannot connect to the net.

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Ubuntu :: Getting Openssh Server To Accept Connections In 10.04?

Jul 13, 2010

I'm having problems getting openssh server to accept connections in Ubuntu 10.04.Here's what I've done (twice): Installed Ubuntu 10.04 on USB drive with pendrive installer. This creates a default user "ubuntu" and you don't get the chance to choose a password for it. Started a keyring for network access and selected password. Works.Enabled VNC and selected password. Works fine with VNC client on local network. Logs in as "ubuntu" user and asks for the VNC password, then connects. Note: the client doesn't know the "ubuntu" user password, and neither do I! However, it works.Installed openssh client and server from Ubuntu s/w center.

$ ssh localhost OR $ ssh ubuntu@localhost try to connect, but asks for password, which I don't know (see step one, above) so, then I created a new user, with known password, logged in as new user in Ubuntu, works.however, $ ssh newuser@localhost still fails, even when correct password for <newuser> is supplied. Rejects the password three times, then gets the usual error about keys.I also tried connecting with an SSH terminal app from my iPad, again using <newuser>. It gets essentially the same error, "failure to authenticate".

All this is still on my own LAN, haven't gotten to going outside the router yet.What I want to do in the end is use VNC over SSH from a client on my iPad to talk securely to Ubuntu while I'm traveling.

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General :: Suddenly: "the Proxy Server Is Refusing Connections"?

Oct 4, 2010

So Im newish to computing, and new to anything network/linux related.Situation: yesterday I installed Privoxy and it was working great (verified via Privoxy.org). Starting today while at a coffee shop i go the error "the proxy server is refusing connections". All of my settings are what they were yesterday and the default:

$ privoxy --version
Privoxy version 3.0.15 (http://www.privoxy.org/)


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Ubuntu Servers :: Compaq Proliant DL380 G2 Refusing To Install 10.10

Mar 29, 2011

I have a Compaq server, as per the title, and I wish to install Ubuntu Server onto it but ran aground when I found it got to trying to run the installer after the CD Boot menu, it just stopped there, waited 180 seconds (as per the error's details) and then locked up with the Caps Lock & Scroll Lock lights on the keyboard flashing.

Now I know it's not the server, as I have installed other OSes onto it in the past, including an older version of Ubuntu server (9.04), I did try and re-install the 9.04 version but the CD I had was too scratched up and got to a point in the installer (copying files) where it just failed cos it couldn't read the disc.

The specs of the thing are:

Dual PentiumIIIs 1.4GHz
512mb RAM (keep meaning to upgrade it)
3x 18.2GB 10k SCSI HDDs (Storage)


Not sure what else is in there, but the full specs are on the web...

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Ubuntu Servers :: 10.4 Apt-get Install Openssh-server Failure?

May 8, 2010

I'm trying to get openssh-server working so I can stop using the family TV and just SSH from my laptop. I've only just installed 10.4 server edition, and I've made a change to /etc/apt/sources.lst by removing the # in front ofdeb cdrom:[Ubuntu-Server 10.04 LTS Anyway I run:sudo apt-get install openssh-server

Reading package lists... Done
Building dependancy tree


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Ubuntu Servers :: Configure Openssh Ftp - Upload To Web Directory

Jul 27, 2010

I would like to upload files via ftp or sftp to my web directory at /var/www/...

Originally I had installed openssh-server (through apt-get, before learning about tasksel). I assumed this only had ssh support and not ftp, so after a quick search, I installed vsftpd. I would like to learn how to configure openssh, and I mention vsftpd in case there is a conflict.

Right now I am able to log in to my server box through ssh/ftp, but I can only modify my home directory. I created a directory: /var/www/andrew and set permissions to drwxr-xr-x. I am unable to upload files to this folder.

What do I have to do to resolve this, and is there anything else I should know about my situation?

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Ubuntu Servers :: Stop Openssh From - Ever - Running At Start Up?

Jun 12, 2011

I'm running Ubuntu 10.04 LTS and I have installed openssh.I need to find a way to configure it so that it never start up when I boot into my computer. The reason is: I haven't had the time yet to learn how to set it up and configure it correctly. Until that time comes I don't want it to run at all.Every single time I boot into the system and I have to do that first before I can even do what I really need to on the computer. It's annoying.Does anyone know the best and least complicated way to just make it not run at all until I'm ready to set it up properly?Also how to check what is running on my system after I boot up so I can double check, after making the changes, that it worked right.

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Ubuntu Servers :: OpenSSH Reverse Lookup Using /etc/hosts Before Nameserver?

Apr 6, 2010

Like many others I'm running into some reverse lookup issues with SSH. Setup is as follows:

localnet setup
myserver - 192.168.0.x
myworkstation - 192.168.0.y


nslookup tests show that my reverse lookup is functioning correctly. However, if I use "myworkstation" to connect to myserver.mydomain.com using an external nameserver SSH says: "Address 84.162.xx.yy maps to myserver.mydomain.com, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!"

On myserver the /etc/hosts has the internal address for the server which seems the normal way to go to me. Changing this to the servers external address solves the issue.

Apparently a connection originating from myworkstation arrives from/with my external address, and when its reverse is checked by the server it apparently finds its own internal address for that name in /etc/hosts before doing a nameserver query and thus concludes that internaladdress <> externaladdress which gives the error.

Is there any way to have the server check external DNS before /etc/hosts? Another solution would probably be running an internal DNS, so myworkstation doesn't connect through the 'outside'.

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Ubuntu Servers :: SFTP Setup Using OpenSSH - Network Error?

Jul 6, 2011

I'm new around here and pretty new to ubuntu and linux in general. I am setting Up an sftp server. I set it up using openssh and it worked fine for a few months. Then recently we experienced a power outage. Now the server will boot fine, all users can login locally, but when they try to login remotely they enter their user info and then are denied with some generic network error. Again, being a noob at this I tried to trouble shoot this a little bit but I'm not quite sure what to look for. I believe the ssh service is running but I don't know what else to look for.

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Fedora Servers :: Configure Openssh, /etc/sshd_config On A New Installation Of Core 14?

Nov 11, 2010

How to configure openssh, /etc/sshd_config on a new installation of Fedora Core 14? [since tt does not work right out of the box, I cannot ssh into it]

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Ubuntu :: 2 Pptp Vpn Connections - When I Dial One Of My Vpn Connections, My Other Vpn Connections Be Disabled?

Feb 7, 2011

have a problem with my network-manager in ubuntu 10.10.when I dial one of my vpn connections, my other vpn connections be disabled and I can't use them!I tried to restart network-manager and gnome-panel, but it does't seem to solve this problem.

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Ubuntu Servers :: Config - Change / Add From The Default OpenSSH Config Files To Get Tunnelling To Work?

Jul 10, 2011

I'm running Ubuntu Server 11.04 with OpenSSH, trying to create an ssh tunnel (for web traffic) to it from my (also Ubuntu) laptop. This is the command I'm using to create the tunnel:

Code: ssh -ND localhost:8080 george@ I had it all working on a virtual machine.. which was deleted What settings/lines do I need to change/add from the default OpenSSH config files to get tunnelling to work? I've Googled and AllowTcpForwarding is set to yes, as is X11Forwarding.. but it still doesn't work. Chrome can connect to the server, but says the connection was closed before any data was sent.

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Ubuntu Servers :: 9.10 - Web Connections And SSH Times Out

Jan 28, 2010

I am noticing really odd behaviour after upgrading from 8.10 to 9.10 (via 9.04). My server frequently becomes unreachable. I am using it as an application server, running Apache, JBoss and MySql. Once the server goes idle, all web connections time out. SSH also times out. Usually the server wakes up on second SSH attempt and then everything: Web, SSH etc seems to run fine.

This is a server machine with no GUI. Can anyone point me to power management or other such settings I can tune from commandline? I have disabled power management by adding kernel parameter acpi=off. I still have the problem. The first network connection after the machine has gone idle takes a long time. All later connections run pretty smoothly.

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Ubuntu Servers :: Proxy For SSL Connections?

Mar 11, 2010

I have a small business that I run Squid and Dansguardian on Ubuntu for network proxy filtering, among other things. This works great, but does not block SSL connections on Port 443, such as https proxies. I understand that this is because this type of configuration is a "transparent proxy".

Is there a way to set one up "non-transparent" and, would that filter https?

I cannot blanket block 443, because some sites need it.

I have read that one can re-compile Squid to work with SSL, but not being a super guru, not sure of the implications of doing that.

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Ubuntu Servers :: Allowing Connections From The Outside World Through SSH?

Jan 9, 2010

I want to set up my laptop to allow connections to certain users with passwords from anywhere over the internet via SSH but I'm unsure about how I would go about doing this. I only thought it would be the case of setting up the open-ssh server on the laptop then, using my external IP and PuTTY on another PC outside of the network, connect to the external IP through port 22 so I tried this and wait 3 or 4 minutes or so and it says the connection times out.

I have also configured my router to use port forwarding but this doesn't seem to help much either and I have LAMP setup to allow connections to external IP : 80. The only thing I am able to do is access the laptop through the local network by using its internal IP's like or something. I was wondering if anybody knows if and could tell me how I would do this as I really want to be able to access my home computer/laptop from my work sometimes, especially if I have work at home which is not with me at work or something.

I know this is possible but I'm quite new to this type of thing and don't know what is going wrong. Have I missed something or do I need to change any .conf files or anything?

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Ubuntu Servers :: Samba On Karmic With Two NIC - Connections?

Feb 24, 2010

My setup:
Ubuntu Karmic Server Edition 64 bit
Dell PowerEdge T610
4 internal NIC RJ45
1 add-on NIC Fibre 1 Gb
Samba 3.4.0
two shares intended for WIN clients

Connections: eth0 (the first internal NIC) is part of a private network of 4 servers connected to a Gb switch. this connections serves as a fast link among these servers to regularly transfer (backup) large quantities of data. Only I can utilise it from within the server room (among those servers, obviously).

eth0: 192.168.0.AA1 eth4 is the Intel add-on NIC with 1 GB fibre connections to the public network of our institution. This is the link/IP my WIN clints have to use to access their shares. eth4: 134.XXX.YYY.ZZ1

My Problem: Despite having including both interfaces in my smb.conf only the internal connection via eth0 lives up to my expectation and delivers up to 50 MB/s. All clients trying to connect via eth4 will be able to see and access the shares, but file transfers commence with speeds severely below 0,5 MB/s with lots of aborts and warnings from the WIN file explorer.

So I experimented with the setting "interfaces" in the global section of smb.conf --- to no avail. I even set samba only to eth4: same problem. Only way to get flawless & fast transfers is the way through eth0. The samba log files of the clients I tried do show some errors, but I fear I am unable to interpret them properly.


# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface Intel Gb link via fibre
auto eth4


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Ubuntu Servers :: Multiple Connections To SMB Server

May 25, 2010

I'm curious how I can use a Windows client with two separate accounts to connect, at the same time, to a SMB server hosting two shares. (Provided permissions and accounts are all in order)

Scenario:User1 is always logged onto a Windows client mapped to a Public share on a Linux SMB server.I need a way to keep User1 connected to the Public share and then when needed, allow User1 to provide User2's credentials to connect to a Restricted share.The only way I've been able to do this is to disconnect from the Public Share then reconnect to the Restricted share using User2's credentials. (This is the issue because I need to keep User1 connected to the Public share).Is this a limitation of SMB? Or am I missing a configuration? Please point me in the right direction

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Ubuntu Servers :: How Many Connections Can XAMPP Handle

Jul 23, 2010

i would like to know how many connections per sec/min/hour, xampp can handle. I'm going to run SMF forum on my box, because i'm not ready yet with real server solution. System stats are: G31M-S2C; 2x2GB Kingston@920Mhz; E5200@3500Mhz; 500GB@7200 Seagate, all powered by Lucid x64. In a time i will migrate to a quad, mobo with raid support, etc. but at that point i'm want to know how much connections can xampp handle. Because of the forum nature, i think of auto deleting topics witn no new replys in 5 days for saving place (there will be minimum 1 and maybe max 5 photos per thread, maximum size 2Mb for each).

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Networking :: WAN Connections To Servers ?

Mar 1, 2011

OK, so, basically, not so long ago I had a modem + LAN cable kind of internet setup, and my friends and colleagues had no problem connecting to my Apache, ircd, etc.

But a few months ago my ISP changed it's policy, and now I have a single cable, plugged directly into the 'eth0' port, which connects to WAN (static IP) and, through PPPoE, to the net (dynamic IP). (Sorry, my knowledge in networking is close to nonexistent)

So, now there is a problem. My friends CAN still connect to my FTP and httpd on Windows XP, through both the external, dynamic IP, as well as the static WAN IP, but my Slackware (WAN IP is set up with DHCP, PPPoE - through pppoe-setup, with firewall at '0') is refusing access. No sings of connection is shown in the /var/log/access_log.

Also, VoiceChatter server DOES log the connection attempt, but it refuses connection, sending a 'Auth challenge', and then cutting connection. (The 'challenge' bit was never there before the new net setup)

All connections are done through WAN static IP (though test with netwide dynamic IP yield the same results =)

I run Slackware 13.1, didn't touch the firewall settings at all, and, as mentioned, pppoe firewall is set to '0' value.

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Ubuntu Servers :: Mysql Only Allowing Connections From Localhost

May 11, 2010

Howcome mysql by default is only allowing connections from localhost? I want to access it remotely from another account (not root).

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Ubuntu Servers :: Differentiate Between Connections From Windows And Computers

May 21, 2010

I have a question about connections with an ubuntu server. Is there a way to know if the terminal computer (which is connected to my linux server) is using WinSCP to connect (on a Windows platform) or a linux system? It seems they are using the same port (22) and I think the exact same protocol (SSH / SFTP), is there a way to differentiate between the two though? And going farther there, is it possible to limit the connections only to linux terminal computers and reject requests coming from Windows computers?

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Ubuntu Servers :: Slapd(openLDAP) Refuses Connections?

May 24, 2010

I have slapd-server running but it seems to refuse connections in a very odd way. Wireshark shows that everytime JavaEE-client tries to connect, only 2 packages are sent. As I understand, in tcp/ip protocol, the first is just "hello, who's there". The last is just a message consisting of ACK and RST. I think RST means "we're done". At this point I don't think any credentials are checked so I don't know what could be wrong

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Ubuntu Servers :: Dividing Websites Between Different Internet Connections?

Apr 12, 2011

I know Ubuntu can do amazing things, but I was wondering if it can use different Internet connections for different websites.

The Setup: We have 1x unshaped ADSL connection at 4MBPS (fastest available) that's used for office related things, Skype, General browsing etc. We have another ADSL connection, this time shaped and running at 4MBPS, I want to send all requests to facebook, twitter and downloading sites like fileserve, filesonic, hotfile etc. to the shaped connection. Can iptables be used to do this? The unshaped ADSL router is connected to eth0 and has an IP of the shaped ADSL router is connected to eth2 and has an IP of Local lan is connected to eth1 and has a range of Can iptables send a certain webpage (*.facebook.*) to eth2 and other pages (*.google.*) to eth0 ?

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Ubuntu Servers :: Server Can't Make Outgoing Connections

Jul 17, 2011

I have a ubuntu 10.04 dedicated server that I am having problems with. It intermittently cannot connect to any other servers outside its network.


PING ( 56(84) bytes of data.
--- ping statistics ---
8 packets transmitted, 0 received, 100% packet loss, time 7008ms

(I have tried a bunch of other ips too and none outside its network are pingable) I'm not sure if this is a problem with my server or a problem with the networking outside the server. I have been emailing my server provider and they keep on insisting the problem is with the server and that their network is working fine. Apparently all of their other servers work and they can login into the gateway and ping from there. So they just want to reinstall the OS, but I thought I'd post here to see if anyone has any ideas.

Here is some info I have gained while troubleshooting: I haven't changed any settings at all on the server for months. I haven't done any updates for about a week. The strangest thing is that this is intermittent, there have been a few times in the last 24 hours where I have been able to ping or other ips, but 98% of the time I can't. I have also tried rebooting the server, which had no effect. I can ping the gateway, and I can ping other servers on the same subnet. I can ssh onto the server from my home internet connection, and I can view webpages on apache, so incoming connections work.

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Fedora Servers :: F10 - Max / Unlimited Internet Connections

Mar 22, 2009

When setting up my server I noticed that I could control the amount of connections; the maximum seems to be 256. My server is currently windows 2003 server which is unlimited connections - before I change the server to F10 I need to be able to have unlimited connections (I often go over 256 connections, I have 25 web sites hosted). How do I do this on F10 or is there a better distro for web servers that have thousands of Internet connections at the one time?

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Fedora Servers :: SSH Will Not Accept Connections After Trying To Get VNC Working With Gdm On 11

Aug 1, 2009

I tried to set up vnc following the steps of this webpage:


which did not work. I changed everything back the way it was, but when I tried to ssh in to my remote server, the connection timed out? It showed nothing in secure logs. I tried to ssh in through webmin, in asked for auth but did not connect. The logs said this:

Jul 30 12:05:10 server sshd[2829]: Did not receive identification string from

I tried to telnet port 22 through the shell in webmin and got this:

> telnet 22
Connected to
Escape character is '^]'.
Connection closed by foreign host.

I tried reinstalling ssh, but got the same errors...It worked fine before the howto. I can't imagine how it changed something in ssh...

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