Networking :: Http Request Forwarding To Proxy
Feb 26, 2009
hi
i want to redirect the packet to proxy server. can u help me.
Present network.
MY internal network ==> switch ==> proxyserver ==> router ==> internet.
(for internet i use
to connect proxy, in web browser==> lan settings ==> proxy server ip address )
What i want is
My internal network ==> getway or firewall ==> switch ==> proxy server ==> router==> internet. ( where this getway or firewall i can configure for forward http request to proxy server.)
so that i can separate my internal network from intranet but able to access the internet.
help me out
raghu
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Aug 11, 2011
i am forwarding HTTP request to a internal server, it is quiet successful but access logs donot show the ip of the external m/c. Rather it shows the ip of the machine on which i have enabled port forwarding.
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Sep 27, 2010
Using netcat, nc(1), craft a valid http/1.1 request for getting http headers (not the html file itself!) for the main index page of www dot aalto dot fi. What request method did you use? Which headers did you need to send to the server? What was the status code for the request? Which headers did the server return? Explain the purpose of each header.
nc -v www dot aalto dot fi 8080
HEAD / HTML/1.1
host: www dot aalto dot fi
And it returns:
200 OK
Content-Length: 858
Content-Type: text/html
Last-Modified: Thu, 02 Sep 2010 12:46:01 GMT
[Code]....
I really don't know what does it mean. Question 2: Using netcat, nc(1), start a bogus web server listening on the loopback interface port 8080. Verify with netstat(, that the server really is listening where it should be. Direct your browser to the bogus server and capture the User-Agent: header "Direct your browser to the bogus server and capture the User-Agent: header" I don't understand this question.
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Jun 25, 2010
how to redirect all client http request to https request in squid
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Oct 28, 2009
At the moment I have a proxy and all the users have to configure it in the browser to access internet. I want to make the users able to browse even without configuring the proxy in the browser. but eventually it should be received in the proxy rather than giving an error to the user. I heard with transparent proxy I can redirect all the traffic from a particular network, to a particular host( ie my existing proxy).
I tried this using firewall rules. But then the existing proxy doesn't understand the protocol of the requests. I heard that it should be in the kind of proxy protocol.
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Jan 10, 2011
Hi,
In squid i have blocked some sites like facebook and ......I want to know is there any way when user type in his browser like www.facebook.com instead it show something like following it automatically redirect to www.google.com
Error
The requested URL could not be retrieved
The following error was encountered:
Access Denied.
Basically I want to redirect the http request so the user should not see the page not found error but www.google.com page may open automatically.
thanks
garden
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Feb 18, 2011
I have to retrieve a http request from a particular port using libcurl. I'm using localhost .I am done with retrieving http request using socket programming. how to start integration of libcurl in simple socket programming code.
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Feb 17, 2011
There is a segmentation fault error while receiving http request side program. Following is the code:
Code:
#include<iostream>
#include <sys/types.h>
[code]...
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Jul 19, 2011
My PC is part of a LAN so while configuring eth0, we specify the Gateway to access all other resources in the network. The PC successfully access Internet through a proxy server configured in Mozilla(manual proxy config) but the update option or the Synaptic Pkg mngr are not able to access internet anyway. I have tried the option "Apply System Wide" in "Network Proxy" but no progress so far.
I also tried to forward all request coming for udp/tcp on port 80 to the proxyserver on a specific port, but with no success. Also I can't ping any website from terminal, reiterating the fact that I can access internet in firefox through the proxy on a specific port.
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Mar 10, 2010
My school network uses a http proxy to access the internet, but I am dubious about the security, and so I would like to use http inside ssh to keep my data secure. I don't really know where to start on this, so a step-by-step guide, or links to resources, would be helpful.
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Sep 19, 2010
I have a http proxy account. It works well under windows through wodTunnel(an active X control component). But, I usually works under linux. I want to use it here. But I don't know how. I tried gstm, it can connect to the server successfully, but it seems can't respond to my http request. What should I do next?
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Jan 13, 2010
Machine 1) I have a Server with RHEL5.
eth0 = 192.168.48.x (static class C ip connected to VLAN switch)
Internet available via HTTP proxy through vlan but from other main server but not from machine below.
Machine 2) I also have a Server with RHEL4.
eth0 = 124.30.XXX.xxx (public IP for availing internet)
eth1 = 192.168.60.xxx (class c ip to share internet via squid on the same LAB)
eth2 = 192.168.16.xxx (class c ip connected to VLAN switch)
Now what I want is ssh connectivity available to Machine 1, so as to enable remote machines on the internet connected. I know that it might be hard for Machine 1 to share ssh directly on the internet but if there is any kind of tool or tricks to setup pls tell. So the only chance is ssh via machine 2 then after connected to Machine 2 then again ssh to Machine 1. But how do I make ssh available online? IPtables are set correctly machine 2 can't be ping on the internet.
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Feb 18, 2010
I'm behind a very blocked firewall that only allows connections through port 80 and 443. I wish to ssh to my machine at home, but the port is blocked. Is there a simple server that I can run to route my ssh connection through http?
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Mar 22, 2010
I am trying to configure an eBox to act as an http proxy but having trouble using that proxy on client computers to browse internet. The ifconfig on ebox returns the following:
eBox141:~# ifconfig
eth0
Link encap:Ethernet HWaddr 00:0c:29:ee:64:f2
inet addr:10.45.48.108 Bcast:10.45.255.255 Mask:255.255.0.0
inet6 addr: fe80::20c:29ff:feee:64f2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:90045 errors:0 dropped:0 overruns:0 frame:0
TX packets:226 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7043548 (6.7 MB) TX bytes:35150 (34.3 KB)
Interrupt:16 Base address:0x2024
eth1
Link encap:Ethernet HWaddr 00:0c:29:ee:64:fc
inet addr:192.168.122.158 Bcast:192.168.122.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:feee:64fc/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1123 errors:0 dropped:0 overruns:0 frame:0
TX packets:781 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:949754 (927.4 KB) TX bytes:92267 (90.1 KB)
Interrupt:16 Base address:0x20a4
eth0 is on the internal lan with the client from which I want to access the internet
eth1 is can access internet all right.
The ifconfig on a client returns
eth0
Link encap:Ethernet HWaddr 00:0C:29:46:58:7F
inet addr:10.45.48.102 Bcast:10.45.255.255 Mask:255.255.0.0
inet6 addr: fe80::20c:29ff:fe46:587f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:16014030 errors:0 dropped:0 overruns:0 frame:0
TX packets:835276 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1297106653 (1237.0 Mb) TX bytes:738158694 (703.9 Mb)
I configured the Firefox on the client to use eBox's ip address/port in the proxy settings but I still can't get on the internet.
eBox is on a vmware workstation 7. It is eBox 1.4.1
eBox has two virtual nics (above) - one is NAT (eth1) and the other is bridged (eth0)
The client is on vmware ESXi 4.0. It's an openSUSE 11.2.
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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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Mar 7, 2010
I have a problem setting up a SSH tunnel. I know how it's usually done, but the setup is different this time. I am behind a HTTP(S) and FTP proxy, that does NTLM authentication, and I want to access a server beyond the proxy.
MY CLIENT <-> LAN <-> HTTP PROXY <-> INTERNET <-> MY SERVER
So far, the best I have achieved is installing and configuring CNTLM as a local proxy for the authentication part. Using CNTLM, I managed to access and mount a secured (https) DAV share using davfs2. In theory, CNTLM should let me setup permanent tunnels from local ports to distant ports, and it does; however these tunnels don't seem to work for SSH nor for IMAP (another protocol I tried).
I suspect the problem is that neither SSH nor IMAP is HTTP- or FTP-based, but anyway it does not work. So back to square one: how should I proceed to get ssh to connect through the HTTP proxy (with NTLM authentication) to the remote server? For that matter, if there's a better way than SSH to create a tunnel, that would work in my situation, that's OK with me. Just in case, here are the relevant parts from my firewall setup on the server:
Code:
# default policies
iptables -t filter -P INPUT DROP
iptables -t filter -P FORWARD DROP
iptables -t filter -P OUTPUT ACCEPT
# reset
iptables -t filter -F INPUT
iptables -t filter -F FORWARD
iptables -t filter -F OUTPUT
# allow continuation of established connections
iptables -t filter -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -t filter -A INPUT -f -j ACCEPT
# allow local connections
iptables -t filter -A INPUT -i lo -j ACCEPT
# open ports:
# ssh
iptables -t filter -A INPUT -p tcp --dport 22 -j ACCEPT
Yves.
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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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Jul 7, 2010
I've been trying to make myself anonymous, but I cant find 'Tor' anywhere, tried 'yum & kpackagekit' neither have it. I did find 'Privoxy', installed it, set proxy for HTTP and HTTPS in Firefox, but it says 'unknown proxy' when I try to use it! I've been to the Privoxy web site and read through the 'User manual', but most of it is 'geek' to me!
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May 4, 2011
How to forward local HTTP requests to remote Proxy with IPTables ?
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Feb 27, 2010
I've been doing some security testing in a lab environment that does not have direct internet access. It's actually a little complicated: From home to connect to my lab machine, I
1. SSH to machineA.
2. SSH from machineA to machineB
where machineB is my actual lab machine. neither machineA or machineB allow anything other than SSH, and machineB is only accessible from machineA. However, I really need to run yum on machineB. I have managed to get internet access via Firefox on machineB by creating a series of SOCKS proxy via SSH.
1. machineB: ssh -L 12345:localhost:12345 user@machineA
2. machineA: ssh -D 12345 user@machineC
3. machineB: configure firefox to use socks proxy, localhost, 12345
where machineC has internet without limits placed. This is the only way I have managed to get internet working. I tried using ssh -L all the way from machineB->machineA->machineC but it didn't work (even when setting Firefox to use http proxy). I tried using ssh -D all the way, but again that doesn't work either.
I do have access via Firefox using socks proxy. However, yum update fails to retrieve mirror list, and from what I have found I don't believe yum supports socks proxy directly. Instead, it uses http_proxy / ftp_proxy. how to get yum to go out over the SOCKS proxy I created (same one using in Firefox)? It seems like since Firefox can access the internet and everything without issues, i should be able to get yum to tunnel through the same connection to access everything.... I tried
[URL]
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Apr 6, 2011
I need to redirect all http/https/ftp traffic through the remote proxy, but when I changes connection settings in browser or in System->Preferences->Network Proxy it doesn't work well: instead of getting page content browser asks for saving some short (8 bytes) file with the same content for all requested pages. It happens in Chrome/Opera/Firefox. This proxy requires authorization and works on computer with Windos XP. It worked well when I was using Windows 7 and Proxifier, now I have Ubuntu 9.10 with all available updates.
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May 21, 2011
I'm trying to setup a Centos 5.6 Squid Proxy Server with Content Filtering & Antivirus Scanning Incoming HTTP Traffic from the Internet
I then proceeded to setup an configure the Proxy Server, i was able to test and confirm that Squid and Dansguardian Content Filter is working, however i dont know if Clamav is scanning HTTP traffic before it hits the client/server. Is there a way i can check if the Antivirus scanning is working.. is there some log file or real world test i can i can do to confirm that Clamav is scanning incoming traffic or even blocking potential viruses ??
Anyone who has squid proxy server with Clamav configured and its working can share there settings/setup with me and how they tested it ??
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May 21, 2010
Is there an linux API I can use to do a http request?Say I want to display URL...throught the API
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Aug 20, 2010
are there any linux command to have how many http request are sent and received??
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Apr 27, 2010
I can ssh to my server which is on a LAN accessing the'Net through a Linksys modem/router.I want to be able to configure the Router by using the it's web interface, but the server only has a Command Line Interface and I can only run text browsers like Lynx,hich, although I can log onto the router, the Javascript routines mean that I can't configure the router.I can't access the router's web interface from the 'Net because the router is set up to pass any requests on port 80 to the server.Is there any way I can communicate with the router by sending HTTP requests from my browser external to the LANhaving these relayed to the router by the server and then the server relaying the responses back to my browser.
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Sep 14, 2009
Dear all,
My application has to listen to http request and it must be able to read the http header and then forward the request from proxy. All these things must be done on C/C++. please help me. Awaiting for your reply.
Thank in advance
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May 16, 2010
Cannot get vmware server to work properly running on ubuntu server 9.04
Trying to access the web interface have to highlight the url and keep hitting enter several times to get to the login and after logging in it is real slow and nothing works cannot create virtual machines
I added vmware server to an existing LAMP server
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Nov 8, 2010
ettercap can see http request but not response
I'm trying to see regular http responses from my wireless ipad (victim) from my wired pc (attacker). Everything's working great but I can only see the http requests not the responses.
I've done much reading and googling and tried registering in more relevant forums but some forums were shutdown, so I've come here.
Code:
# setup ip forwarding
echo 1 | sudo tee /proc/sys/net/ipv4/ip_forward
# use ettercap to do the mitm using only mitm
sudo ettercap --iface eth0 --text --plugin autoadd --only-mitm --mitm arp:remote /192.168.0.1/ /192.168.0.155/
[Code]....
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Jul 8, 2011
Hi, is it possible to send a request to a http server without using sockets?
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Mar 30, 2010
I am trying to istall litb for P2020DS. I got an error the following error:
[hwtesting@HWLSRV1 ~]$ cd /home/hwtesting/ltib-p2020ds-20091119
[hwtesting@HWLSRV1 ltib-p2020ds-20091119]$ ./ltib
Don't have HTTP::Request:ommon
Don't have LWP::UserAgent
Cannot test proxies, or remote file availability without both
HTTP::Request:ommon and LWP::UserAgent
add folowwing line to User Privilage section:
hwtesting ALL = NOPASSWD: /bin/rpm, /opt/freescale/ltib/usr/bin/rpmvisudo
I edit the sudoers by visudo command and insert this line just under the following line:
root ALL = (ALL) All
But still I am getting the following:
Don't have HTTP::Request:ommon
Don't have LWP::UserAgent
Cannot test proxies, or remote file availability without both
HTTP::Request:ommon and LWP::UserAgent
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