Get the real IP address of a client

Hi,
          i know it is a common issue but I haven't found any answer in the forum. I would like to get the remote IP address of a client in a servlet. There's Apache server with Weblogic module used in the architecture of our web application. The getRemoteAddress method of ServletRequest class only returns the IP address of Apache. Is the remote address stored in the HTTP header ?
          Thanks,
          Bengali

>You could be getting the IP address of a proxy
          Yes I know this, and since it's for an Internet application I don't care
          about their private address... the IP address of their NAT gateway is fine.
          Anyway,
          the HTTP header field is "X-Forwarded-For" for those who would look for
          it.
          Thanks,
          bengali
          > Even if you could get an IP address from the client it is not always going
          > to be the real IP address. You could be getting the IP address of a proxy
          > server or some other intermediate network device. So different users would
          > have the same IP. Getting a host name can also be problematic because
          > reverse DNS might not be enabled for the domain. Also some of the larger
          > ISPs have employed an IP hopping scheme where the DHCP IP address might
          > change in the middle of a user's session.
          >
          > Now in terms of your original question the IP address of the client might be
          > in the HTTP Headers, use the getHeaders() method to spit out all of the HTTP
          > headers and one of them might be the IP Address
          >
          > Dave
          >
          >
          > "Luc Dewavrin" <[email protected]> wrote in message
          > news:25120100.1092994129792.JavaMail.root@jserv5...
          >
          >>Hi,
          >>
          >> i know it is a common issue but I haven't found any answer in the forum.
          >
          > I would like to get the remote IP address of a client in a servlet. There's
          > Apache server with Weblogic module used in the architecture of our web
          > application. The getRemoteAddress method of ServletRequest class only
          > returns the IP address of Apache. Is the remote address stored in the HTTP
          > header ?
          >
          >>Thanks,
          >>Bengali
          >
          >
          >

Similar Messages

How to get the real IP address

Due to server changes, the method we used to obtain the ip
address of the user (remote_addr) no longer works since it obtains
a specific IP address that is not the user. For our web logs we
were able to make changes to our web server to use this
"headers.x-client-ip" to obtain the correct IP address. Is there
anything in Coldfusion or in the administrator that can do this as
well?

Have a look at : GetHttpRequestData
cheers,
fober

How to get the real client ip by the request header like asp/php,etc?

I want to get the real client ip by request.getHeader("HTTP_X_FORWARDED_FOR"), who use the proxy server to access my site, the way asp/php using, however, I got nothing. Does jsp support the similar header from request, if yes, how to do?
thanks for your tips.
frederick

I want to get the real client ip by request.getHeader("HTTP_X_FORWARDED_FOR"), who use the proxy server to access my site, the way asp/php using, however, I got nothing. Does jsp support the similar header from request, if yes, how to do?
thanks for your tips.
frederick

When clients ping server, they get the wrong ip address.

I have a server with the ip address of 10.0.1.10, but when clients ping the name "dyn01," they get 10.0.1.83.
If they ping "dyn01.local" they get the correct ip address.
I used server manager to look at DNS, and the ip address for the server is correct. I'm not sure what to try next.

Client IP is logged in the access log, which is CLF by default.
Do you need this info in the event log, as well?
What do you need client IP info for?

How to get the local IP address?

Hi,
I try to obtain the users local IP address similar to:
InetAddress localHost= InetAddress.getLocalHost();
String localIP = localHost.getHostAddress();
InetAddress[] inetAddress = InetAddress.getAllByName(localHost.getHostName());
for (int k = 0; k < inetAddress.length; k++)
if(!inetAddress [k].getHostAddress().equals(localIP))
return inetAddress [k].getHostAddress();
}This code works fine in a stand alone application. When I try to use it in conjunction with Web Start it only returns 127.0.0.1.
I think there's no Service from Web Start that gives me the users IP address. Or am I wrong?
Does anyone know a solution for this?
Thanks in advance!

Hello,
I use java.net.InetAddress.getLocalHost().getHostName();
in my javaws and I get the real hostname.
Probably your DNS is not correct,
or other possible problem: sign your jars, so you get full access to the System resources.
regards.

How to get the real name of a sender ?

When I receive a message under JavaMail, I want to get the real name of the sender but when I do a getFrom() I received a string like :
=?iso-8859-1?q?Julien=20Dupont?= <[email protected]>
But I only want the real name...
How can I do to recover only "Julien Dupont" ?
Thanks
Ju

javax.mail.Address[] addrs= m.getFrom();
Address a = addrs[0];
if (a instanceof InternetAddress &&
((pers = ((InternetAddress)a).getPersonal()) != null)) {
String addr = ((InternetAddress)a).getPersonal();
} else
addr = a.toString();
this 'getPersonal()' is the thing you need.

WRT54GS: without Windows, force a given MAC address to always get the same IP address via DHCP?

I have just now set up my WRT54GS to manage my home wireless network, and it works great. I just have one question that I haven't been able to find an answer for (forgive me if I have overlooked an obvious source of information).
I have set up the WRT54GS to be a DHCP server, and it assigns addresses in an ad hoc manner to all the devices that connect to it. In general, this is what I want, but in one case, I want a certain host to always get the same IP address, for example, 192.168.1.10.
You should know that I have no Windows machines on my network. Everything is either running Linux, MacOSX, or Symbian (on a Nokia N95 handheld). Therefore, I can't set up a static IP for my device using the software supplied on the CD that comes with my router, as that software only runs under Windows.
Using a different manufacturer's router, I am able to accomplish this by telling the DHCP software on that router to always assign 192.168.1.10 to the host who connects with a certain MAC address. I can then use this mechanism to force my specific host to always get this desired IP address. However, I haven't been able to find any way to do that with the WRT54GS without the software on the Windows-based CD. Is it possible at all? If I can indeed do this without that Windows software, could someone point me to some docs which explain how to accomplish this?
... or is there perhaps a different way to cause this to happen, perhaps by means of some sort of DHCP client ID?
Thank you very much in advance for any pointers you can give me.
Message Edited by HippoMan on 10-16-2007 05:27 PM
Take a hippopotamus to lunch today.

Forget about the CD. There is nothing on the CD which you don't configure better through the router web interface at http://192.168.1.1/ You don't need the CD. Never. I have never used the CD to configure any of my routers. The program on the CD is just a software which helps you with the initial configuration of the router. It is just a software which pretty much contacts the web interface in the background and sends some settings changes there. You can do everything yourself directly. Then you know what you change.
You have to configure the static IP address on the computer and on the computer only, e.g. on your Mac use Static IP instead of DHCP in the network preferences. Enter the IP address you want to use for the computer, the subnet mask, gateway address and DNS server(s). That's it. The router is not involved in any of this.
You just have to make sure that you use an IP address inside the LAN of the router. By default, Linksys routers use the IP address 192.168.1.1 on the LAN side for the the router. The subnet mask is 255.255.255.0. The IP address together with the subnet mask says that all IP addresses 192.168.1.0-255 are considered part of the LAN. Everything else is outside and needs to be routed to the router and from there into the internet. (If you want to know how the subnet mask works exactly read the wikipedia article on it or search for "subnet calculator" or similar in the internet)
Thus, if you connect a computer to your LAN and set a static IP address on the computer it should be inside this IP address subnet/range in order to have internet and LAN access on the computer. It does not matter which address you use as long as it is inside the IP subnet. The DHCP server on the router automatically assign a correct IP address inside the IP subnet and also automatically assigns the correct gateway address (its own address = the address to which everything should be sent which does not belong into the LAN, i.e. the internet traffic) and the DNS server. With static IP you have to assign those values yourself.
But again, there is no Windows computer or CD involved to do that nor is there any configuration on the router required to set the static IP address on the Mac. The IP address you set must simply match your LAN IP which is basically defined through the settings on the router as you want to have internet and thus need access to the router and its address 192.168.1.1.
Some routers allow you define fixed IP addresses for specific devices in the DHCP server of the router. With that function you can set a fixed IP address on the router. The computer can remain on DHCP. It will always get the IP address you have configured in the list on the router through the DHCP server. However, your Linksys router does not have this option. If any device inside your LAN is supposed to receive the same IP address at any time you have to configure that on the device only.
If you have not changed the default LAN IP address, subnet mask and DHCP server settings on the router, the router has 192.168.1.1, subnet mask 255.255.255.0 and the DHCP server uses 192.168.1.100-149 for dynamic assignments. To avoid potential address conflicts you should not use any static IP addresses inside the DHCP server address pool. This leaves you with IP addresses 192.168.1.2-99 and 150-254 as static IP addresses inside your LAN. You can pick any address you like as long as any device with a static IP address has a unique IP address inside your LAN.
Assign the subnet mask 255.255.255.0 on the computer and set the default gateway to 192.168.1.1. The DNS servers are a little bit more complicated. Generally it is better and faster if you use the DNS servers of your ISP. You can, however, also use the IP address of the router 192.168.1.1 as DNS server. The router will then operate as DNS proxy, i.e. it contacts the DNS servers of your ISP for any request from your computer.
If you want to use the DNS servers of your ISP, click on the Status tab in the router web interface. It shows you the current settings of the router on the internet port. It should show you multiple entries for DNS servers. Choose those DNS server IP addresses in the computer.
If you don't want to go through the hassle with the direct access to the DNS servers of your ISP, simple use 192.168.1.1 as only DNS server on the computer.
There are all settings you have to make on your Mac or other computers to assign a static IP address. As long as the IP address is inside 192.168.1.* it belongs to the LAN and has internet access through the router (as long as the default gateway address is 192.168.1.1 of course).
Firmware is loaded either through the web interface of the router, usually somewhere on the Administration tab or with tftp. Both ways work fine on any Mac or Linux box.

What is the real ip address to the apple server? Someone changed the host file in windows/system32/drivers/ect, and now I can't do a restore on my iPhone 3gs.

What is the real ip address to the apple server? Someone changed the host file in windows/system32/drivers/ect, and now I can't do a restore on my iPhone 3gs

"You have to change your router's IP address to be able to access it. It will not give you the internet."
I'm not sure what that means Richard, but I did change the router's IP address from 192.168.1.1 to 192.168.5.1- isn't that what you meant in your first post. I know that isn't reflected in my screen capture that I took last night, but I did do that this morning after I read your post.
"Log on to your router and change two settings.
Change the setting in Setup from PPPoE to Automatic Configuration-DHCP and click on save.
Click on Advance Routing and change the setting from Gateway to Router then click on save."
I did this and still same results as far as I can tell. Can't get online through the router.
"Click on MAC address clone under setup tab ... click enable & click clone ...click save settings ... Check the IPaddress under WAN page ....
If getting IP in public range .... try going online ...."
I tried this- at least to the part about checking the IP address under WAN. I assume you mean the WAN page in the modem setup- nothing looked any different after trying what you suggested, and I'm not really sure where I would be "getting IP in public range" or what that means.
I'm about to give up and just buy a new router to see if I can get the same lack of results with a different one. My ISP maintains that everything is set up correctly on their end and really can't do anything more for me. The Modem works and is set up correctly and they can give tech support for a router.
Here's what my basic setup looks like now:
http://i490.photobucket.com/albums/rr270/SukarUDL/BasicSetup.png
Here's what the advanced tab looks like now:
http://i490.photobucket.com/albums/rr270/SukarUDL/AdvancedRouting.png
Modem setup looks the same
Message Edited by Writersbloc on 09-25-2008 07:05 PM

How can I get the e-mail address (reply addr.) once connected to a server

My application ask the user to enter the POP3 server host name (+ port) more the
POP3 server userId and password .... I can get the e-mails and show the to the user ....
Now, the user want to send a message from that "account" and what I need
is to know the "reply address" (the "from address") to set to the outgoing message ...
I would like to get it somehow (from the API or in anotherway) without asking the
user to enter it ...
So, oonce connected to the POP3 mail server (successful login) is it
possible to get the e-mail address of that guy ??
please let me know if you have a solution ....
many thanks / regards / Max

You are of course trying to get an email address in the format of [email protected] You already have "username" the trick is the somedomain.com. I don't believe that the pop3 server has anyway to tell you this. Unless your host name is "fully qualified", i.e. pop3.somedomain.com, I don't know that you can get this information. Maybe you could take the IP address and do a reverse DNS lookup? Still you wouldn't really know if that is the domain the user really wants. For example I retrieve and send my email from aaa.com, but my domain for my reply-to is bbb.com. Your goal is noble, but perhaps not practical. That is why Outlook Express requires the user to enter their email address when setting up an account. Hope this helps.

How can I get the real column of an alias in a view using system catalogs?

Given a view with columns that use aliases, I would like to get the real column name for the view column with the alias.
For example,
CREATE VIEW myView AS
SELECT name as col_1, price as col_2, price + 1000 as col_3
FROM myTable
I want to get that 'col_1' is actually the 'name' column and 'col_2' is the 'price' column by querying the system catalogs of SQL Server. It would be great to know whether I can resolve what 'col_3' is in the
example as well (i.e., when an alias is an expression, not just a column).
Thanks in advance.

Or you can use the System function
sys.dm_exec_describe_first_result_set, example
CREATE TABLE myTable
(name varchar(30), price money);
GO
CREATE VIEW myView AS
SELECT name as col_1, price as col_2, price + 1000 as col_3
FROM myTable;
GO
SELECT name, source_table, source_column
FROM sys.dm_exec_describe_first_result_set(N'SELECT * FROM myView', NULL, 1) AS FRS
=>
Olaf Helper
[ Blog] [ Xing] [ MVP]

How can i see the REAL web address, before i click the link, in an iOS device email?

on my windows devices, when i mouse over a link, they show me the REAL web address, before i decide if i want to click it or not. How do i do this on apple devices?

on my windows devices, when i mouse over a link, they show me the REAL web address, before i decide if i want to click it or not. How do i do this on apple devices?

Unable to get the SharePoint 2013 List names using Client object model for the input URL

Please can you help with this issue.
We are not able to get the SharePoint 2013 List names using Client object model for the input URL.
What we need is to use default credentials to authenticate user to get only those list which he has access to.
clientContext.Credentials = Net.CredentialCache.DefaultCredentials
But in this case we are getting error saying ‘The remote server returned an error: (401) Unauthorized.’
Instead of passing Default Credentials, if we pass the User credentials using:
clientContext.Credentials = New Net.NetworkCredential("Administrator", "password", "contoso")
It authenticates the user and works fine. Since we are developing a web part, it would not be possible to pass the user credentials. Also, the sample source code works perfectly fine on the SharePoint 2010 environment. We need to get the same functionality
working for SharePoint 2013.
We are also facing the same issue while authenticating PSI(Project Server Interface) Web services for Project Server 2013.
Can you please let us know how we can overcome the above issue? Please let us know if you need any further information from our end on the same.
Sample code is here: http://www.projectsolution.com/Data/Support/MS/SharePointTestApplication.zip
Regards, PJ Mistry (Email: [email protected] | Web: http://www.projectsolution.co.uk | Blog: EPMGuy.com)

Hi Mistry,
I sure that CSOM will authenticate without passing the
"clientContext.Credentials = Net.CredentialCache.DefaultCredentials" by default. It will take the current login user credentials by default. For more details about the CSOM operations refer the below link.
http://msdn.microsoft.com/en-us/library/office/fp179912.aspx
-- Vadivelu B Life with SharePoint

How to get the real name of a user from WFSYST-AGENT

Hi,
I am retrieving the WFSYST-AGENT value (which correspond to the US<user_id> of the agent responsible of a task) in a container variable in my workflow.
I would like to get the real name of the user represented by WFSYST-AGENT. How should I do that ?
Thanks in advance for your help.
Thibault

Hi,
Take the user name and write a select for database table USER_ADDR fetching fields NAME_FIRST and NAME_LAST by passing BNAME = username.
Regards,
Jayesh

How to get the real path of the xml file

I have a java application
following is the package structure
com>>gts>>xml
having file---------> MyXML.xml
com>>gts>>java
having java program to read the file
Problem is if I use File file = new File("..\\xml\\MyXML.xml");
java.io.FileNotFoundException: E:\LEARNING_WORK_SPACE\JavaXml\..\xml\MyXml.xml (The system cannot find the path specified)
     at java.io.FileInputStream.open(Native Method)
     at java.io.FileInputStream.<init>(Unknown Source)
     at java.io.FileInputStream.<init>(Unknown Source)
     at sun.net.www.protocol.file.FileURLConnection.connect(Unknown Source)
How do I get the real path of the xml file.
Edited by: shashiwagh on Jan 29, 2010 11:46 AM

Hi,
if your XML file is inside a package you can easily get it from the classloader.
Note that your application maybe packaged inside a jar so it is not safe to use java.io.File for this purpose.
You have an xml file in :
com/gts/xml/MyXML.xml
in a class of the same module (that will packaged in the same jar) for example com.gts.java.XmlLoader :
// To get the stream :
InputStream is = this.getClass().getResourceAsStream("/com/gts/xml/MyXML.xml");
// Or the URL :
URL xml = this.getClass().getResource("/com/gts/xml/MyXML.xml");Hope it helps.

How to get the vm ip address in scvmm 2012

Hi,
I want to get the vm ip address in scvmm 2012, who can help me?

I have seen lots of people ask this because they can see IP addresses in other Virtualization Consoles, Unfortunately SCVMM doesn't show IP address of the VMs on the console but you can use below script to populate Custom1 property of VMs with IP address
and make Custom1 Column visible (manually) in SCVMM Console... HTH
param ( $VMMServer = 'localhost')
$CustomProp = Get-SCCustomProperty -Name Custom1
$VMs = get-SCVirtualMachine -VMMServer $VMMServer
foreach ($VM in $VMs)
$NetAdp = get-SCVirtualNetworkAdapter -VM $VM.name
if ($NetAdp.IPv4Addresses)
[String[]]$str = $NetAdp.IPv4Addresses
Set-SCCustomPropertyValue -CustomProperty $CustomProp -InputObject $VM -Value "$str"
Disclaimer: The sample script is provided AS IS without warranty of any kind.

Get the real IP address of a client

Similar Messages

Maybe you are looking for