Squid proxy server request

sir
I installed squid proxy in our environment for making internet access fast.It works fine when browsing internet. But when we access the our internal webserver\
located in another location it provides the following error message
unable to determine ip address for host
The dnsserver returned:
Name Error: The domain name does not exist
the ip address of requested url is 10.0.0.23. We are using vpn to connect to that network.
please suggest solution for this problem
Regards
Satheeshkumar.M

You will need to specify a DNS server that is the authority for your local network domain, which is also configured to forward your non-authoritative (public internet) requests to another or public DNS servers. When specifying multiple DNS servers, keep in mind that any response from the DNS server, unknown or successful, will satisfy the request and other DNS servers in your list will not be queried. Some implementations may allow you to attach DNS servers to DNS searchlists. If you have a small local network, it might be the easiest to add your local hosts to the /etc/hosts file. Depending on your network security you may also have to look into possible problems of denied requests to DNS servers outside your network. Is there a special reason why are you using a proxy?

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If I virtualize redhat Linux to use squid, will the latency be too much? Bear in mind that the underlying OS and hardware (server 2008 on RAID-5 and 2GB of RAM) must also act as a WDS server. If it weren't for the necessity of WDS I would make
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My boss thinks that there will be too much latency... I on the other hand don't have the experience to know or the time to build a prototype for testing it.

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I use iPlanet-Web-Proxy-Server/3.6-SP5 on Soloaris. and trying to use persistenet connection functions in forward proxy through setting keep alive to "ON". But I found this functions doesn't work at all. The following trace is the HTTP Header info i got from receiver.
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proxy-authorization: Basic YXBwLWVtcXVzZXI6MTIzNDU2Nzg=
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Is a proxy server bug? Can I do something to make it work?
Regards,
songtao

Hi
This as per the HTTP/1.1 RFC (RFC2616)
The Connection general-header field allows the sender to specify options that are desired for that particular connection and MUST NOT be communicated by proxies over further connections.
The Connection header has the following grammar:
Connection = "Connection" ":" 1#(connection-token)
connection-token = token
HTTP/1.1 proxies MUST parse the Connection header field before a message is forwarded and, for each connection-token in this field, remove any header field(s) from the message with the same name as the connection-token. Connection options are signaled by the presence of a connection-token in the Connection header field, not by any corresponding additional header field(s), since the additional header field may not be sent if there are no parameters associated with that connection option.
Read the following at
http://www.w3.org/Protocols/rfc2616/rfc2616-sec8.html#sec8.1.3
and
http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.10
Regards
Nagendra HK

Safari 3.x (Leopard) and Web Proxy Server Problems:

I have a Squid proxy server running on Linux. Users web traffic is directed through it via WPAD server which hosts a simple PAC file. The PAC files is very clean and small. It basically points all external (Internet) web traffic to our Proxy server. All of our Windows, Linux and Tiger clients work fine. However, Leopard (Safari 3.x) doesn't work quite right. Here's what happens:
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All the Macs (Tiger and Leopard) are configured to use the Proxy server via OS X's Network Pref Pane (using the "Automatic Proxy Configuaration"). Reminder: Tiger works fine (even with the Safari betas), but Leopard's doesnt not.
I have attached our PAC file inline below (some things edited for privacy):
// SIMR automatic configuration for Mozilla and friends
// $Id: wpad.dat,v 1.8 2005/12/14 20:18:23 dct Exp $
// Edit carefully, since many may be relying on this...
function FindProxyForURL(url, host) {
// Bypass the proxy for internal addresses
if (!url.match("http:")
|| url.match("http://127.0.")
|| url.match("http://10.")
|| url.match("http://192.168.")
|| isPlainHostName(host)
return "DIRECT";
// These are exceptions given in the IE config for Windows.
if (host == "www.ncbi.nlm.nih.gov"
|| host == "chabry.caltech.edu"
|| host == "flybase.bio.indiana.edu"
|| host == "www.fedex.com"
|| host == "domain.org"
return "DIRECT";
return "PROXY <proxy server>:8080";
}

I think I have a similar problem. I am a Mac connecting to an otherwise all PC school network.
A new location with all correct proxies has been set up. However, Safari always crashes on first attempt to negotiate its way through our server to the internet. Internet explorer gets through because in its preferences it is possible to include the name of the school domain as well as my user name and password.
We have been unable to find any way of including the domain name into Location in Network or into Safari.
However, once Internet Explorer has negotiated with the server I can launch Safari and it works as normal.
Safari/Network seems to lack this option of including a domain name that my PC server requires.
Make sense to anyone?
Worth mentioning that my copy of Internet Explorer (5.2) often crashes, but usually it has done its job by then. I quite like the concept of Internet Explorer sacrificing itself to clear a path for Safari.

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Help ...
I am familiar with earlier iterations of the Mac OS X server software and set up a largish 16TB system in a UK hospital before I retired. I am now working for a charity in a remote location and testing the latest version running on a recycled MacBook Pro to see if it could be used in earnest to provide local services to support the volunteer community here. Access to the internet is very slow and heavily restricted by a Squid proxy server and I find the lack of a comprehensive OS X Server manual frustrating at times (if there is one please point me to it!).
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Flash-Player: Zuverlässige Quelle kann nicht kontaktiert werden - Squid Proxy

Guten Morgen,
Clients: Win7, 64bit
Browser: FF aktuellester (10.x) oder Iexplorer 8
HTTP/HTTPS-Proxy: Debian Squeeze (6.0) Squid Proxy Server
Die Update-Funktion des Flash-Plugins kann nicht beendet werden und es erscheint:
Was genau meint "Zuverlässige Quelle kann nicht kontaktiert werden" ?
Ich sehe in den Proxy-Logs, dass durchaus Verkehr zu Adobe stattfindet:
1329987084.782
56 192.168.0.0 TCP_MISS/200 405 GET http://dlmping.adobe.com/dlm/fp.gif?os=win&exitcode=-1&app_ver=11.1.102.62&failed_action_n ame=download&site=live&aih_name=install_flashplayer11x64ax_gtbd_aih.exe&aih_vers=1.1.8.3&i temid=Flash_Player_11_for_Internet_Explorer_(64_bit)&dlc=flashplayer&pre_installed=0&cance lled=0&failed_action_id=0&failure_reason=201&os_ver=7_64 - DIRECT/193.104.215.55 text/plain
1329987084.849
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Besten Dank
Stefan Bauer

CE-505 w/Microsoft Proxy Server Authentication

Recently installed Cisco CE-505 and the customer wants to direct everything to Microsoft Proxy Server for authentication and URL filtering with SurfControl. I added the command: http proxy outgoing host 192.168.90.2 80 primary - which directs all HTTP requests to the Proxy Server; however, the proxy server requests a login. Is there a way to pass either a plain text username and password or how to pass the original login information to the Proxy Server. The only way I know how to get around the problem is to policy route the traffic to the inside interface of the Proxy Server.
Thanks,
Brian

Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you. If you don't get a suitable response to your post, you may wish to review our resources at the online Technical Assistance Center (http://www.cisco.com/tac) or speak with a TAC engineer. You can open a TAC case online at http://www.cisco.com/tac/caseopen
If anyone else in the forum has some advice, please reply to this thread.
Thank you for posting.

Mail Under Squid Proxy

I'm under a corporate proxy (squid) that only has port 80, and 443 available. However, it seems that mac's mail app cannot connect through only these ports.
Is there a way to make Mail connect through 80 or 443? I cannot make a ticket for other ports to be opened as they would only say to browse email through browsers.

If your Squid proxy server is setup only to do ports 80 and 443 it is only doing http and https protocols. If your trying to access an IMAP account you need ports 993 and/or 143 to be proxied. However this will mean you need Squid to be configured to also support that which is via a different type of proxy called a SOCKS proxy. Squid can do both SOCKS and http/https parodying at the same time.
If your connecting to an Microsoft Exchange Web Services (EWS) server then this as its name suggests it uses standard web i.e. http/https protocols and will work with ports 80/443.
It sounds therefore that you are trying to connect to an IMAP server, unless SOCKS is setup then you will be blocked.
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If you are trying to access a corporate Microsoft Exchange server then it is possible EWS has been disabled as Windows clients do not use this protocol, again the IT department should ensure that they provide the services needed to support Macs if Macs are being supplied to users. If the company is providing Macs to users and the IT department is failing to set things up to allow those Macs to connect then the IT department is failing in their job and the person responsible should be replaced with someone better up to the job.

ACE SSL initiation via Proxy server (squid)

Hi,
is it possible to configure ACE with SSL initiation if the connection goes via http/https proxy (squid) ?
I mean local host is requesting http://xyz.com, ACE doing SSL and requesting https://xyz.com, not directly but via http/https proxy server (squid).
Thanks

Hi Ryszard,
Yes, ACE can initiate SSL traffic and maintain SSL connection. So in SSL initiation ACE will act as a CLIENT receiving clear text HTTP traffic at the front end and sending traffic encrypted over the backend.
For more details please visit the below link and let me know if you have any questions.
http://www.cisco.com/c/en/us/td/docs/interfaces_modules/services_modules/ace/vA5_1_0/configuration/ssl/guide/sslgd/initiate.html#wp1010343
Regards,
Kanwal

Proxy Server "freeze" when are not request for a long time

hi... i have the followin problem that i can't find a solution yet..
my context are:
- sun java web proxy server v4.0.5
- sun java one directory server where i have my users that can use proxy
- between this servers i use a self signed certificate
the problem are (history):
- i start the server and star a browser, they ask for user and pwd; i give them i all ok
- i can acces www without problems
- i finish my work i go to home, but the proxy is keep running (but nothing are using
them)
- when i come again to work, i start the borwser and the proxy ask for user and pwd;
i give them, but they keep to give the browser default page without results.
i can only make the proxy serve works again is restarting them.
i my acces log i have the following when i can try to connect and don't work:
100.0.4.145 - [24/Aug/2007:08:11:55 -0300] "GET http://www.google.com/HTTP/1.1" 407 - - - - - - - - - -
i my directory log i dont have request at this time
how could be? :(
thanks in advance

hi... i cannot resolve this yet, but i can see http headers when this problem happens...
for example:
URL:*{color:#000000} http://www.google.com/{color}*
Request: GET http://www.google.com/ HTTP/1.1
Host: www.google.com
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041215 Firefox/1.0 Red Hat/1.0-12.EL4
Accept: text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Proxy-Connection: keep-alive
Cookie: PREF=ID=7ed5b832324f7935:TM=1159373905:LM=1187742924:GM=1:S=xYVfSPR3P8b-qCLa; GTZ=0; rememberme=false
Response: HTTP/1.x 407 Proxy Authentication Required
Server: Sun-Java-System-Web-Proxy-Server/4.0
Date: Tue, 18 Sep 2007 11:13:41 GMT
Content-Length: 146
Content-Type: text/html
Proxy-Authenticate: Basic realm=""
Connection: close
so...i look in specification about http 1.1 (rfc2068) (if i not wrong), when the server receive a request that needs authentication of the client he response whit a "request" of these autentication, so the client send them...
i think that these response about the server needs that the client need autenticate is in the response with http code 407, but in rfc says that the parameter Proxy-Authenticate are like Proxy-Authenticate: Basic realm="string_here" where "string_here" is a id defined by server.
So.. the string in "realm" ¿should not be diferent from empty (null) ? :(
Thanks in advance :)

Re: (forte-users) HTTP request through proxy server

Daniel -
No, it does not. ;)
How do you say to HTTPRequest to go through proxy?
Thanks,
Taras
Daniel Nguyen wrote:
>
Hi,
It works very well. I have experienced this model for a distant Forte client
calling a Forte Server service Object for instance without any environment
and without TCP access (passing through firewall for instance).
It has also worked very well to make an injectot to improve Web Enterprise
and IIS using the SendRequest from HTTPAccess.
Hope this helps,
Daniel Nguyen
Freelance Forte Consultant
http://perso.club-internet.fr/dnguyen/
Taras Katkov a écrit:
HTTP request through proxy server using forte HTTP library?
Any experience?
Thanks,
Taras
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.com--
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.com

You can also use the HTTP-DC project.... You don't
need Web Enterprise for this. From what I can tell,
this is available in L.x on....
There is api documentation in M.2 (with scant
examples.)
There's a special process to put the project in your
repository (it isn't installed in the repository in
the standard install,) the documentation in M.2
(probably in M.0 too, AFAIK) that tells you how to do
this (look for HTTP-DC in the online help.)
I haven't done much with it yet, I've just installed
it. If anybody out there has examples, that'd be
great. I'll try to contribute more the moment I get a
chance to explore it....
Christopher Fury
BellSouth Communications Systems
--- Daniel Nguyen <dnguyenclub-internet.fr> wrote:
Hi,
If you have Web Enterprise, you can user
HttpAccess.SendRequest().
Hope this helps,
Daniel Nguyen
Freelance Forte Consultant
Amin, Kamran a écrit:
Is there any way to make a HTTP request from TOOLto another HTTP Service?
thanks in advance.
For the archives, go to:
http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. Tounsubscribe, send in a new
email the word: 'Unsubscribe' to:forte-users-requestlists.xpedior.com
For the archives, go to:
http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To
unsubscribe, send in a new
email the word: 'Unsubscribe' to:
forte-users-requestlists.xpedior.com
Kick off your party with Yahoo! Invites.
http://invites.yahoo.com/

"Method Not allowed" Error while submitting request thro proxy server

I have an application that uses JSSE to talk to a http/https
server, everything worked until I tried using https and a
proxy. Http with or without a proxy worked, https without a
proxy worked, but I can't get https with a proxy to work. The
only thing my application does different is to setup the proxy
stuff with the following function
if (strTunneling.equalsIgnoreCase("ON")) {
/** Setting the proxy host-name and proxy port in the system */
String strProxyHost = ((String) objRouterProp.getProperty("PROXYHOST")).trim();
String strProxyPort = ((String) objRouterProp.getProperty("PROXYPORT")).trim();
System.setProperty("https.proxyHost",strProxyHost);
System.setProperty("https.proxyPort",strProxyPort);
The Exception i am getting is as follows
java.io.IOException: Unable to tunnel through proxy. Proxy returns "HTTP/1.0 405 Method not allowed"
Any Help is highly appreciated
Thanks
Thirumaran

It means your proxy-server doesn't allow HTTPS tunneling. Have you looked at the "Allow" header in the response? If the proxy is coded correctly, it's supposed to contain ways you can reach the requested resource in ways the proxy will allow.
Some proxies don't allow HTTPS tunneling because they want to be able to log the traffic contents. Perhaps this is one of them.
Grant

How 2 pass a request from a broswer to remote server via a proxy server

hi my program is on a proxy server it will be lisenting in port 9876
i have configured in a way that all browsers request pass thro this proxy server
so when user request for www.yahoo.com in the browser the
resquest is passed 2 this proxy server. so i got the host name and created a socket.
i read all the request that has come from the browser such as "GET www.yahoo.com HTTP/1.1 ,,"
I got the outputstream for the remote socket and i passed all these request to the remote host.. but i could nt get any response frm server can any one help me out?
===
import java.io.*;
import java.net.*;
class Proxyserver
ServerSocket ser;
Socket myclient;
BufferedReader br;
String cf1="\r\n",cf2="\r\n\n",lf="\n";
OutputStream o_remote;
public Proxyserver()
try
ser=new ServerSocket(9876);
myclient=ser.accept();
// read inital requst from browser
br=new BufferedReader(new InputStreamReader(myclient.getInputStream()));
String req=br.readLine();
String temp=req;
int val=temp.indexOf((int)'/',11);
String host=req.substring(11,val);
//connect 2 host
Socket remote=new Socket(host,80);
System.out.println(remote.toString());
o_remote=remote.getOutputStream();
while(req!=null)
System.out.println(req);
o_remote.write(req.getBytes(),0, req.length());
o_remote.write(cf2.getBytes());
o_remote.flush();
req=br.readLine();
o_remote.write(lf.getBytes());
o_remote.write(lf.getBytes());
o_remote.flush();
// wait for response from remote server
InputStream in=remote.getInputStream();
int response=in.read();
while(response!=-1)
System.out.println((char)response);
response=in.read();
//close all sockets
remote.close();
myclient.close();
ser.close();
}catch(Exception e){}
public static void main(String a[])
new Proxyserver();
===
op i got all the req from the broswer and wrote 2 op stream of remote server but i could nt get the response
==
output"
Socket[addr=javaworld.com/130.94.4.230,port=80,localport=3225]
GET http://javaworld.com/ HTTP/1.0
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
Accept-Language: en-us
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.1.4322)
Host: javaworld.com
Proxy-Connection: Keep-Alive

Hi
Just look for JspSmartUpload classes ..
this will help u
U can use
<input type=file name=f >
thanks
regds

The proxy server could not handle the request

i am trying to download a transcript from the IRS website and i get this error
Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request POST /icce-core/load/gettrans/pages/availableTranscripts.xhtml.
Reason: Error reading from remote server

Are you using a proxy? Check you settings. 
===============================================
'''Try Firefox Safe Mode''' to see if the problem goes away. [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]] is a troubleshooting mode that turns off some settings and disables most add-ons (extensions and themes).
''(If you're using an added theme, switch to the Default theme.)''
If Firefox is open, you can restart in Firefox Safe Mode from the Help menu by clicking on the '''Restart with Add-ons Disabled...''' menu item: 
[[Image:FirefoxSafeMode|width=520]] 
If Firefox is not running, you can start Firefox in Safe Mode as follows:
* On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac: Hold the '''option''' key while starting Firefox.
* On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
''To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
When you figure out what's causing your issues, please let us know. It might help others with the same problem.
Thank you.

The proxy server could not handle the request get /user/login in dbfw 5.1

hi
when i m login to oracle database firewall throuth internet explorer on the window xp client then the following error occur
the proxy server could not handle the request get /user/login
plz resolve issue
Edited by: 913779 on May 15, 2012 6:29 AM

Are you using a proxy? Check you settings. 
===============================================
'''Try Firefox Safe Mode''' to see if the problem goes away. [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]] is a troubleshooting mode that turns off some settings and disables most add-ons (extensions and themes).
''(If you're using an added theme, switch to the Default theme.)''
If Firefox is open, you can restart in Firefox Safe Mode from the Help menu by clicking on the '''Restart with Add-ons Disabled...''' menu item: 
[[Image:FirefoxSafeMode|width=520]] 
If Firefox is not running, you can start Firefox in Safe Mode as follows:
* On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac: Hold the '''option''' key while starting Firefox.
* On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause.
''To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
When you figure out what's causing your issues, please let us know. It might help others with the same problem.
Thank you.

Squid proxy server request

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