Ubuntu Servers :: Slow Connection To Server Over SSH/Proxy?
Jul 31, 2011
Im running Ubuntu 10.04, currently living out of the country from where my server is located. We have a 4 Mbps dsl connection that speedtests fine to the closest server, and if we test from our present location to the speedtest.net server closest to our server the speed is great as well. When I SSH in to my server and setup a socks 5 proxy the speed goes through the floor. We barely get .2 Mbs. Whether I use putty or terminal from our mac, they both get the same slow speed. I've searched the forums and google extensively, but I haven't been able to come up with anything yet.
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Jan 10, 2010
I just set up squid for the first time. I have zero experience with proxy servers. I used this guide:[URL](I also looked at a few other guides such as this one:ttp://ubuntuforums.org/showthread.php?t=320733. However, I wanted to most barebones config to start with and the link I used was the simplest.)So now that I have it set up, I'm testing it with FoxyProxy. It is not working well. I went to speedtest.net. The download and ping tests were just as fast as without the proxy, but the upload test fails completely.Furthermore, many web pages load very slowly or not at all. So performance is very mixed, but mostly poor.
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Apr 22, 2011
everytime if more that 10-15 people using internet at same time squid proxy slow to responde everyweb just keep loading and here my squid proxy settings
1 nic
squid proxy 2.7 stable 9
ubuntu 64bit
intel duo core
[Code]...
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Mar 16, 2011
I've been using squid-cache for a long time for authentication/authorization. It has work fine for years, but now it starts working too slow only in one computer (the others, works fine).
It's configured as a reverse proxy.
I see it can be a DNS problem, but the computer is configured with the same dns servers in resolv.conf that the other computers have.
I use squid 2.6.stable14 on RHEL 4.4.
If I restart the service (service squid restart) it works fine, but 15-20 minutes later, the problem repeats.
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Apr 7, 2010
then I connect into work through a secure vpn connection that used to be reasonably fast. Sometime in the last year or so it has slowed down dramatically as if they added a one minute delay between pages. Everything works fine otherwise. It's just slower. At work they use all microsoft software, server software, etc. and if I connect in my friend's laptop with Windows 7 it works quite well and the pages load quickly like my Kubuntu laptop used to. What I'm wondering is if this is some kind of compatibility issue between Windows explorer and Firefox browsers or just a sour grapes issue on Microsoft's behalf where they slowed things down on purpose?
My laptop system monitor readout:
Ubuntu
release 9.10 (karmic)
Kernel Linux 2.6.31-20-generic
GNOME 2.28.1
Harware
[Code]....
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Mar 18, 2010
A Linux (CentOS5.3) server is setup with apache reverse proxy. The reverse proxy server is opened to outside and an internal server is mapped to ProxyPass configuration. SSL certificate is also installed on the Apache reverse proxy server. The problem is, it is extremely slow in serving http requests through reverse proxy. There is no problem with server resources or bandwidth. When the internal server is directly accessed through Internet, there is no delay. The backend server and the reverse proxy server are also on the same switch (same subnet). When I searched the Net, there were recommendations to enable cache in Apache. I did so as follows in httpd.conf.
<IfModule mod_disk_cache.c>
CacheEnable disk /
CacheRoot "/var/cache/mod_proxy"
CacheDirLevels 5
CacheDirLength 3
</IfModule>
But still there is no progress. Do I want to enable cache in ssl.conf too? Or is there any other workaround to speed up Apache reverse proxy. Is there a way to check that caching is happening?
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Nov 6, 2010
I have configured a squid proxy server with @2 eth in different network subnet and with site blocking and extn file download blocking. One eth0 for office wired network and another eth1 is for office wireless network for laptop use for guest and visitors.
The problem is [URL] is an Indian government website, which is not working though this proxy server and the Internet Explorer is getting very slow and freezing the computer. In alternate I have configured a another test server with squid proxy with out any security and test the same. the problem is still with the all the computer in the network. The above website is perfectly working with Gateway configuration in TCP/IP properties in Network Configuration in MS Windows XP computers but through squid proxy its not working.
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Jul 19, 2010
firstly it took a very long time to display the browser.After the browser was working on my localmachine it took really long time to show the response.I am doing all this on internet and the server has bandwidth as 6Mbps and my internet connection has a speed 1Mbps what could be the reason for such a slow response.The same exists in case of Chromium is there a way to make it fast.Ubuntu 10.04 server edition and ssh2.
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Dec 17, 2009
We have two offices suppose A and B. At office A, we use centos 5.3 computer as router and squid proxy server. At office B we use a cisco router to connect to Internet. Computers at office A that has direct access to Internet can access computers behind cisco router at office B using vnc viewer. But computers at office A that can use internet only through squid proxy can't access computers behind cisco router at office B. Is there any way so that I could allow squid clients to access computer behind cisco router at office B using vnc viewer.
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Jan 9, 2011
I want to settup a proxy server who just redirect the internet connection to my second computer. I try Squid Proxy but its too complicated for me. Can you sugest me another more simple program to do what i want?
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Jun 11, 2011
How do I set up a proxy server for Windows ? Can I use openssh ?
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Feb 10, 2011
I am running an Ubuntu Server on a VirtualBox VM running on my windows machine. So I've created a self-signed certificate using the following tutorial: [URL]
From this tutorial I'm left with 3 files:
server.key
server.csr
server.crt
Then I found this very similar tutorial that has an extra bit on installing the certificates in apache: [URL] So I followed it's instructions which boil down to this:
[Code]...
So I'm thinking this should work now. However in Chrome I get: SSL connection error Unable to make a secure connection to the server. This may be a problem with the server, or it may be requiring a client authentication certificate that you don't have. Error 107 (net::ERR_SSL_PROTOCOL_ERROR): SSL protocol error. IE8 gives me a typical "Internet Explorer cannot display the webpage" Note that [URL] fails while [URL] works fine, so it's definitely something in my ssl setup I'm thinking.
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Apr 28, 2010
Ubuntu lts server distro using on remote machine. i have remote site where internet access given via squid proxy. so when we enter in browser it start working internet fine. but on command line(bash shell prompt terminal) like wget,ping,nslookup,traceroute etc these commands does not work.
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Mar 11, 2011
At home I have an Ubuntu 10.10 Server which is my fileserver and squeezebox server for my home LAN.
My home Internet connection is a 10/10Gbit fiber (soon to be upgraded to 25/25, I was told by my ISP).
How hard is it for me (I'm not too technical) to make my home server a proxy for surfing through when I am abroad?
The thing is: our national broadcaster (www.nrk.no) broadcasts live streaming TV, but only to IP addresses in Norway. When I am travelling abroad, I would like to use my home server as a proxy in order to be able to receive these streams as if I was on my home IP address (more or less like the services offered from the US in order to make it possible for non-US people to watch hulu.com etc.)
I would prefer a proxy setup, instead of slingbox or similar.
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May 11, 2010
I have 4 servers running squid/3.1.1 proxy server. Since the latest version I can no longer FTP. I have posted this problem in multiple places but have received almost no response. I've found several other post to this problem throughout the Internet which have also gone unanswered. So, once again, I thought I'd give it a try. As I said "I have 4 servers running the newest version of Squid". When I try to access an ftp, any ftp, I receive an error (check attached image). This was never a problem until just recently. Squid should work perfectly find with ftp, it is not a strictly http proxy.
I turned my firewall off just to make sure, still had the same issue. If I jump directly on the server itself with no proxy settings set in the browser it will work fine. As soon as I set the browser setting to access the Squid software I get the same error. I've included my squid config (which is unchanged from the default settings), maybe somebody better versed than myself can point out an obvious flaw. Everything else seem to work just fine, it's only FTP that's a problem.
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Jan 25, 2011
This is my first post to the forum
I've recently migrated my office PCs to ubuntu. My server doesn't server any big purpose but to provide Internet Connection to the rest of the nodes. Things were quite easier during the windows era using ICS.
Even in Ubuntu we were able to do it using the "shared network" option, simple & straight forward. But things got complicated only after installing "squid". Needless to say it brought in a lot of add ons as far as the http proxy serving is concerned & we are enjoying a better internet(http only) connectivity without any doubt. But we are not able to use our email clients, MS Outlook or Thunderbird
But to best of my knowledge squid strictly is a http proxy hence doesn't support handling requests on ports other than 80. (465 & 995 in my case)
Now I have two queries, 1. Can "Squid" really be used to do what I want here??? using iptables, port forwarding or any other mean
& 2. Can any one suggest a good pop3/imap proxy as good as squid is.
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Jul 29, 2011
I am Install Ubuntu Server 10.04LTS and install 3 LAN Card. 1st & 2nd LAN are use ISP1 & ISP2 with public static IP and 3rd LAN connect with Local Switch. How to configure this server as Load Balancing Internet and configure Proxy Server with user authentication and user wise site blocking.
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Sep 1, 2009
I am working on fc10. I connect to internet using two connections: with proxy and without proxy. Initially I had some problem in configuring yum for proxy and I resolved it by creating files proxy.sh and proxy.csh in /etc/profile.d with the required details (export_proxy).Now when I connect to my connection without proxy I have some problems .Whenever I try to do yum update I get the following error:
"[URL]: [Errno 12] Timeout: <urlopen error timed out> Trying other mirror. Error: failure: repodata/primary.xml.gz from adobe-linux-i386: [Errno 256] No more mirrors to try." what changes do I need to make in order to use yum in the connection without proxy?
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Aug 1, 2010
If this gets moved I apologize for putting it in the wrong place...Purpose of server: RED GREEN ROUTER for SOHO or PARENTAL CONTROL Block known bad URL,IP... ie porn, malware, ads, others Block Good URL,IP if Desired by OWNER Scan mail protocols for viruses out and in if out is found log and mail MASTEROSSIBILTY??? scan all protocols in and out for viruses n block log out block log and mail MASTER a server build log and possibly a step by step assist for new users.Version of ubuntu server 10.04Hardware Gateway Pentium 4 2 network cardsUse of server RED GREEN ROUTER FIREWALL that blocks site list from shalla and my own list. general use would be for SOHO or Parental controlpick language...pick it again???...country...no...country for kb...kb layout...eth0(as RED)me it...timezone...HDD choice(i used guided-use entire disk)...user...proxy if needed(not for RED GREEN ROUTER!!!)...updates(i picked auto)...LAMP,openssh, mail server ...sqlpassword...grub...done
then
login as user/pass created in install
run following
[code]...
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Aug 2, 2010
I currently have my server setup with a web page and ssh. I am looking to find a way to access the internet from my work computer, but all proxies that I can find have been blacklisted...I can however access my home server webpage. Is it possible to create my own proxy so I can surf from my work laptop?
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Dec 7, 2010
This is a recent problem, and I can't pinpoint any change/upgrade that would cause this. Rsync transfer from Client to Server:
sent 11756196 bytes received 1032741 bytes 138258.78 bytes/sec
total size is 144333466390 speedup is 11285.81
Pinging back and forth from each machine is fine. No Ifconfig errors Client, but Server has RX packet errors.
eth0
Link encap:Ethernet HWaddr 00:11:25:37:ee:44
inet addr:192.168.1.101 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::211:25ff:fe37:ee44/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:41786 errors:2157 dropped:0 overruns:0 frame:2157
TX packets:34138 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:55615449 (55.6 MB) TX bytes:4737538 (4.7 MB)
What's the next step?
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Mar 30, 2010
I have an interesting situation. I'd like to use bittorrent for legitimate purposes (mainly linux distro based) but the powers that be have blocked access to bittorrent at my university. I have an ubuntu VPS that I use for odds and ends and was thinking that I could setup a SOCKS5 server on it. That way, I can input the SOCKS5 info directly into the proxy section of my local bittorrent application (Transmission 1.92 running on snow leopard) and be good to go. The problem, however, is that I cannot find a way to get a SOCKS server up and running on my VPS. I've heard that ssh can be used as a simple SOCKS server, but I've also heard that i may need to install a more complete SOCKS server such as dante. Does anyone have any thoughts on this?
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May 30, 2010
I don't care so much the practicality and needlessness of actually setting up a computer for proxy server for personal usage, but none-the-less, i want to do it, and i'm just wondering about hardware.The proxy, i don't intend on having a desktop environment, so it'll be a terminal interface.But for a system that will handle traffic for 3 pc's and a ps3, how much hardware would one suggest i need, as far as RAM, HDD space, so on and so forth.
I was thinking it would be fun to do with with my old amd k6-2 processor and it's 32mb of ram, but in order for that pc to work, i'll need to replace a few hardware pieces, and before i dumb money into it and pull it out of the closet, i want to find out if it would even be worth my time to do it.
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Feb 15, 2010
Today I installed Ubuntu server 9.10 on my old sony laptop with 512MB of RAM and 2.4GH celeron CPU. I hooked up my server to the router(D-Link) using cable. Now I try to upload or download data(mostly my music) to the server the speed is no higher than 500-700 KB/s. Although at first it used to be around 1.2 MB which is still considered to be low, but is there anyone who knows what I should do? By the way, I use SSH on Ubuntu 9.10 to connect to my server.
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Jan 7, 2011
I am merely trying to change the port for my ssh server.However it isn't changing.I edited my ssh_config file to:
Code:
# This is the ssh client system-wide configuration file. See
# ssh_config(5) for more information. This file provides defaults for[code]...
When i try to connect to my server via port 443 i get a connection refused error. However when i try to connect via port 22 it connects. Since that didn't work, i tried restarting the entire server.To restate, i changed the config file and restarted ssh then the computer, however the port didn't change.Ohh and yes my router is set to port forwarding on port 443, though it doesn't matter since I'm inside the network.
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Dec 9, 2010
Currently my DHCP Server is working now what i want to have is auto detection of squid proxy in any browser but I still got an error in my dhcp server when I restart it.
My Config:
# DHCP configuration generated by Firestarter
ddns-update-style interim;
ignore client-updates;
[code]....
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Aug 18, 2011
It stores all my important stuff, as well as some music and movies.I use a second linux box in my living room to "stream" content via NFS or SAMBA share.The streaming tends to stop several times during playback, and needs to fill up its buffer again before continuing to play.I also have some Windows XP and 7 based computers that connect to this file server.I have noticed that directory listing is VERY slow, and there is a huge lag when I want to save/read a file from/to my home directory.
This is my setup:Ubuntu Server 10.10 64 bit (I have the same problem with 32bit ubuntu)
3 RAID5 arrays with 4 hard drives eachLVM on top of the 3 raid5 arrays.The Logical Volume i use is about 6.5TB, and I use the ReiserFS file systemThis LVM has grown over the years, and has had som replaced disks. So I have used the pvmove, and extend commands a bit.I have tried using IOTop and top to check if there is not enough resources available, but that doens't seem to be the problem.I haven't been able to find out why streaming over the network stops, but I know it is the server that causes the problem.Does ReiserFS have any performance problems with large logical volumes? Would changing to EXT4 or some other FS give any performance gain?
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Jan 13, 2010
I have two ubuntu boxes. One is a 9.04 desktop edition and the other is a 9.10 server edition I am working on some code that needs to be highly tolerant of bad network connections. It sends transactions to a central database, but when the network is not available, it caches them locally to retry later.
I have the code working beautifully on my desktop box. but when I test it on this other box (the one running server edition) there is a HUGE DELAY every time it tries and fails to send a transaction to the database when the network is down.
I tested a little further, and I found that if i unplug my network cable and run ping somehost on the desktop, it fails instantly saying "ping: unknown host somehost" But if I unplug the cable on the server box and run the same ping command it lingers for about 40 seconds before the ping fails.
Does anybody have any idea why this might be happening? Is this a 9.04 vs 9.10 difference? Is this a desktop vs server difference? Is there some package I can install, or some config setting I can change that will make the server box insta-fail just like the desktop does?
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Feb 23, 2011
I am trying to set up my squid3 proxy as a transparent proxy - right now, I have to manually configure browsers to access via proxy. I understand that I have to put some rules into Iptables and also some further directives in the squid.conf.
I have a couple of specific questions. The proxy server is running on a Ubuntu 10.04 workstation and this machine also acts as a dhcp server for the network. I have just one subnet , namely 192.168.0.1-254 There is only 1 network card. Is it much easier to put in a second network card or is it just as easy to configure the existing lan card as a dual IP?
Is it necessary to configure these 2 IP's ( whether they are via 2 lan cards or dual IP on single card ) to be on different subnets. i.e ETH0 192.168.0.1 and ETH1 192.168.1.1 or is ok to have something like ETH0 192.168.0.1 and ETH1 192.168.0.254 ( where ETH0 is the one facing the LAN and ETH1 points to the modem router / switch i.e The Internet ) Where specifically do I save the Iptables rule configuration file and what must I call it ?
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Dec 3, 2010
I'm a little stumped on this one so I reaching out to see if anyone here has any idea. I just changed my ISP to Surewest as they're doing fiber straight to the house in my area so I have 8Mbps up and down.
I have my linux box running openssh and I have no problems SSHing into it from my remote laptop at work. I use putty to connect to it and create a tunnel so I can configure my firefox to use it as a SOCKS proxy. The problem is my response time for page loads in firefox is atrocious now. It'll take over a minute to load yahoo.com. The only real differences in my setup now are my ISP and router hardware at home. Previously, I was using the firewall that was built into my AT&T Uverse gateway. Now, I'm using my old Linksys WRT54G v5.0 router with the latest firmware. My linux box is wired directly into it with ethernet. When I run the speed tests from that box I get my correct speeds of 8Mbps up and down with <15ms ping. From what I can tell, all of my router settings are correct.
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