Ubuntu Networking :: Proxy Server Without Vpn Or Ssh?
Jul 8, 2011
I have been struggling to configure a squid proxy server on my ubuntu 11.04 VPS.
Following these instructions[URL].. it is all good BUT I don't want to have to SSH tunnel into the server. Just want to have a proxy set in my proxy server settings in firefox/chrome. Even lock the proxy to certain static IP addresses so no one else can use it except IPs I designate.
1. Can this be done without a VPN or SSH tunnel ?
2. What is the best way to put some security on the proxy server ?
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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 21, 2010
I've two internet based server ( xx.xx.xx.xx and yy.yy.yy.yy ) The Y server is running VNC server and is responsible for answering to VNC sessions. But I need to hide the IP of Y server so I want X server to be as VNC Proxy and redirect all VNC sessions to Y server.
I guess the best way is to use iptables but actually I can't get it working so
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Jun 28, 2010
Recently at work, they decided to block a wonderful site I used to access all day long (Facebook) so I'd like to be able to setup a proxy server on my Ubuntu box in order to access it from here as they wisely block all the other sites that allow one to proxy. What is the best one to do, and what would I need to do in order to be able to access it from an external IP, to include unlocking what ports on my wireless router?
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Jul 21, 2010
I'm in a hotel right now and apparently they got it blocked so that I can't download torrents or p2p. I plug straight into the lan. I don't know enough about networking. I know that torrent programs need access to certain ports to work. So is theyre firewall blocking the port? I've heard a proxy server can get around this problem for me. I don't know anything about proxy servers or how to set them up. I'm also relativly new to Ubuntu / Linux but I've already learned a great deal about it so if any of you guys could take the time to give me a quick walk through of what I need to do in order to start torrenting again
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Aug 4, 2010
Is there a way to connect to a samba share on the other side of a dynamic ssh tunnel?I like to use ssh -D 8080 <host> to access the network on the other side of a ssh session. For applications with their own proxy settings it seem to work really nice.In this particular case I'd like to use the 'Connect to server' feature in Ubuntu to connect a samba share through the tunnel, but I can't figure out how to make only that connecton use proxy settings.If I enforce system wide proxy settings the ssh tunnel will die, so that is not an option.
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Sep 12, 2010
Having a bit of an issue connecting to my apache2 server. I'm running Ubuntu Server 10.04lts. I can only connect to my website via ip address global, ip address local, and the dyndns domain I have linked to my ip address. I have DMZ setup for my server with a local static address of 192.168.1.100. I can only connect to the default apache page via lan, and It wont load when I try via proxy. I need to know how to configure my router (wndr3300) so that I can connect to my server (address 192.168.1.100) and the pages from outside of my network.
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Mar 16, 2010
How to configure SQUID proxy server in ubuntu 9.10 ?
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Mar 16, 2010
how-to configure squid proxy server. I still haven't been able to find a solution. I want to set up squid as a open http proxy server. So people from other networks can connect through the proxy without having to login.Do I have to use iptables to reroute http traffic to squids proxy port? I have forwarded the port in my ISP modem so I know thats working, its the squid config that has flaws or iptables locally.
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Jun 6, 2010
Some time ago, while I was still using Ubuntu 8.10 I began accessing Internet through a proxy server. Even though I had set my system proxy settings - including authentication - to pass the proxy, my online backup service (Jungle Disk) stopped connecting. I finally figured out that I had to include proxy port in the Jungle Disk Desktop tool's configuration (like this: 192.168.0.1:8080). That worked fine until I recently upgraded to Ubuntu 10.04 - with the identical proxy setup. This time I can't get any connection at all. Here's the Jungle Disk report:
===================
Connection Test Failed
Exception Code: xSocketTimeout (53)
Time: 06/06/2010 02:29:42 PM (GMT-4)
[Code]....
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Feb 12, 2011
I used windows OS and installed Ubuntu 10.04 (amd64) in separate partition and works well but had a problem in internet connectivity. Likely reason may be the proxy setting that we used in college (currently). I used this commands to set up the IP address and gateway.
ifconfig -a | grep eth
"eth0"
sudo ifconfig eth0 192.168.5.209 netmask 255.255.255.0
[code]....
Then I manually set the proxy setting of HTTP which is given as proxy server 192.168.5.2 and port as 8000, further more there is a wins setting which is 192.168.1.178, really don't know where to put this number.
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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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Oct 14, 2010
I dont know my question is right or wrong.I want to know can i use apache as a proxy .Is there any relation between apache and squid proxy.
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Jul 2, 2009
My ISP seems to be having some configuration problems cos of which I cant download certain files (mostly exe and msi and some rpm files) as the download either doesnt start (firefox download window showing "Starting..." all the time) or download gets stuck at some point of time.
However I have access to my college computer through SSH using public key authentication and my college computer has internet access 24x7. I would like to be helped with 2 things:
How do I use the internet through my college computer? Like when I use the internet, the requests go through my college computer so it must appear that the requests come from my college computer IP while I use firefox from my home computer How do I configure yum to download packages through my college computer? I want to setup yum to use the IP of my college computer to download the packages.
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Feb 7, 2010
I have access to a server via ssh. I'm allowed to install things in my userspace. Furthermore, I'm allowed to use the bandwidth. I paid for access to this server, so they're pretty much ok with me doing things with my space. They told me not to store over 20 GBs of data, and I've kept to that rule.
Basically, I want to be able to turn it into a proxy. So, in a way, I want to redirect all of my traffic to that server. If I have a request, it goes to the server, and any replies come directly to my box.
So, this would be a proxy, right? I only have SSH access, I think. Maybe I have some other forms of access, but I can't remember.
How would I go about doing this?
Here's what I have in mind:
(my box) ----request---> (the server) ---> {internet}
(my box) <----reply/incomingdata---- (the server) <---- {internet}
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Mar 2, 2010
I am running Jaunty 9.0.4. I have go through a proxy to get out to the net. It was working. Sometime yesterday it was unable to resolve the proxy server. Can't even ping it. Other computers can. I even switch cables to no avail. What could block the proxy server? I can't even ping google.com Was it something I installed through add/remove software? Has anyone seen something like this before and even better has a solution or can offer a way to troubleshoot this? I can ping myself and the default gateway server.
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May 14, 2010
I am unable to connect to the Internet in lucid via a proxy server using apt-get or synaptic. Opera & firefox connects to the internet fine with the proxy setting.
I have tried the following solutions:
1) set proxy setting using systems|preferences|network proxy
2) editing ~/.bashrc & /etc/.bashrc
3) creating a /etc/apt/apt.conf file.
4) putting the proxy setting in synaptic
For the proxy setting I have used the both the verbose name as well as the ip address. There is no logon requirements for the proxy server. Either formats work in the browsers.
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Aug 5, 2010
I downloaded freeSSHd [URL] on my Windows XP SP3 PC and configured the firewall to allow port 22. My grander scheme is to use this Windows PC as a SOCKS proxy server, that I can connect to at school to circumvent internet filtering and keep my data private. Does anyone know of a way that I could somehow get every internet-connected-program/service (chats, email, browsers, etc) to use this encrypted connection without having to configure every program individually? I think this link is on to something, but I'm not certain what he's getting at [URL].
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Mar 9, 2010
I'm a network administrator and I have to cut the internet access to some network users. I would like to do that by installing a proxy server on a F10/F11/F12.
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May 4, 2010
I'd like to use ssh as a proxy/socks server and redirect all connections through this proxy.
It would look like : ssh -D 123 -N host
iptables ...
I've never used iptables before and I did not manage to find any useful for this particular case solutions on the internet.
So, what's the good way to do that ?
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Mar 4, 2010
I want to run a proxy server on port 1080, so I typed
Code:
ssh localhost -D 1080
That way I am able to connect to port 1080 from that server, but I can't connect to port 1080 from another client on the LAN.
What can I do so that other clients can connect to port 1080 on my server?
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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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Jul 13, 2011
In my company have proxy server using Linux.
Ip Address Proxy Server 1 is: 123.16.201.23
Ip Address Proxy Server 2 is: 123.16.201.24
Every Client: 123.16.3.25,....
and 123.16.4.25,.....
....
- I want export config file on Proxy Server, but i don't know command and i see interface is command line. So hepl me command line and send file to my email.
- In config file on Proxy Server may be disconnect internet for user and Enable coonect internet for user. Hepl me do this?
- I using Ubuntu 10.04LST i want connect file Server on Server ( using WinServer2003).
I just go to company so i have everything don't know system.
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May 16, 2010
I'm trying to set up a server for an NPO who connects to the Internet through an internal proxy (Websense). I can't access the Internet unless through the proxy.
Since it's a server I did not install a GUI so I'm wondering how to connect the new server to said proxy server. I have the IP address, port number and username-password for the proxy server. The new server has a static IP address and is ready too go!
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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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Aug 9, 2011
Am using Fedora 15, in which i was able to configure the proxy server and authentication. i confirmed this by configuring web broswer and it works. Now the problem is that i want to deploy it out to other computer system(client) i dont want to use the transparent proxy because the Proxy Authentication will not work.
I even tried to configure a DHCP server if it will work but i cant still configure for other computer system to work.
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Jan 18, 2011
I have an enormous quadcore machine with 16gb ram and dual gigabit NICs. It used to be for MySQL but we have upgraded the whole database infrastructure so now this server is left floating. I had the great idea of turning this into a reverse-proxy (using apache mod_proxy) and it really handles a ton of requests. But I have a feeling that we are not getting the most use out of what it can offer.
Our traffic consists of a few thousand very small (less than 10 byte) ajax calls per second, and frequently I find we are running out of kernel allocated network stack to handle all the requests. Often we get the kern.log warning "possible SYN flooding on port 80. Sending cookies." and other things like this. Obviously we are not getting SYN flooded, we just have very high demand.
So far I have found a few kernel tuning guides to tell the kernel to allocate more of the base system memory for networking but every guide I have found has been for the purpose of increasing the performance between WAN links (direct backbones between offices etc) and usually with very large file sizes being the priority. One such example (and great) write up is here:
cyberciti.biz/faq/linux-tcp-tuning/
I was hoping some people could provide further input, such as along the lines of disabling nf_conntrack (to speed up socket set up/tear down time) or anything that will speed up a high throughput proxy like mine. Any links to studies or benchmarks between different configurations or hardware gets extra points!
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May 20, 2009
I'm using Fedora Core5.0 I have using Iptables for forward port 80 to port 3128(Squid) in the same of server.I need to forward using Iptables to use the other proxy server because this server i am use for vpn and mail tranfer.What a Commnand for i use?ase 1. Server 1 >Ip 192.168.0.4 SQUID WITH PORT(3128)2. Server 2 IP 192.168.0.254 PF SENSE (3128) I will use server 2 for using internet connect only.
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Mar 30, 2011
i have a website named [URL]... now i want to access this website using proxy server(squid,or etc...) under my personal server named [URL]...means that [URL]...
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Mar 25, 2010
I am new to iptables. We have two Squid proxy servers running in "non-transparent mode" (172.16.0.1 and 172.16.0.2). Currently users have to configure the proxy server they want to use by configuring them in their browsers. Recently I saw an example for redirecting web traffic to a single transparent proxy server.
-A PREROUTING -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 3128
-A PREROUTING -p tcp -m tcp --dport 443 -j REDIRECT --to-ports 3128
Can anyone modify this rule to accommodate my current setup of two proxy servers running in non-transparent mode. i.e Redirect web traffic to the 172.16.0.1-172.16.0.2 ip range.
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