Ubuntu Networking :: Can't View External IP Links To Http Server On Same Machine
Sep 1, 2011
I have an apache server running on my ubuntu machine. I can view them using my local ip (192.168.1.6):80/. And my friends can view the things hosted on my server using my external ip (example http://123.123.123.123:80) but when a friend links back to me to show me what they are looking at and share the moment, I can't view the link, it simply redirects to my router login page.
I had an older linksys router and this could work fine. I could click on the links with my external IP and it routes back to my server for viewing.
Remember to note that I am on the machine that has the server, and I'd like to be redirected out and back to it so we can share pictures back and fourth without me having to replace the external IP address with my local one just to view that link in the browser.
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Nov 3, 2010
I'm trying to use traceroute to view hop count between my machine and a specified external host but no matter what I give to it, it provides me the same output:
[Code]...
What am I doing wrong? Should I be disabling DNS caching? Is there a property I haven't set correctly? Just a small FYI, but I dual boot this computer with Win7 and it's tracert works fine. UPDATE: I also ran the command from a different network and it worked fine. I'm assuming I need a port forward then?
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May 26, 2010
i have a problem........ How to redirect local http port to remote ip ddress(192.168.10.64) using iptables..my destro is Centos 5.3 my rule is this iptables -t nat -A PREROUTING -s 0/0 -d <my local ip> -p tcp --dport 80 -j DNAT --to-destination 192.168.10.64
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Jul 12, 2011
I have two DNS servers, one local and one remote, and I am trying to get them to talk to each other using views.
The problem I'm having is that the remote server can talk to the local one and receive zone files, but if I update the local server internal view, the remote doesn't receive the update. Here is my config:
Quote:
key "external" {
algorithm hmac-md5;
secret "xxxxx";
};
controls {
inet 127.0.0.1 allow { localhost; };
[Code]....
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Apr 30, 2010
When I click on an http link in Thunderbird, nothing at all happens. There's no error message on the console, there's no new browser starting, and there's no new tab opening with the browser already running.
I've tried: sudo update-alternatives --config x-www-browser, choosing firefox.I've also tried: adding a new string value to Thunderbird's warranty-voiding config: network.protocol-handler.app.http, with a value of /usr/bin/firefox. This was recommended in various threads.But no luck.There's an entry for https - firefox on the Attachment tab of the preferences, and https links are indeed opening in Firefox. But not http.KDE 4.4.2 itself has default mail client and browser set to Thunderbird 3.0.4 and Firefox 3.6.3 (both from the repositories, no website downloads).
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Jun 29, 2011
after updating to fedora 15, the http links in Thunderbird doesn't work.I have tried many solutions, but without result.
- in prefs.js add :user_pref("network.protocol-handler.app.ftp", "/usr/bin/firefox");
user_pref("network.protocol-handler.app.http", "/usr/bin/firefox");
user_pref("network.protocol-handler.app.https", "/usr/bin/firefox");- I have tried it with KDE and GNOME.
- move .thunderbird to .thunderbird.backup and reopen thunderbird. But still same problem.
- When I create a new user it works correctly! So I think it must be related to the update.
- I also change the default application (in System Settings) to google-chrome and Opera. But no result.
- http-links in other application (dolphin, nautilus, ...) works correctly
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Aug 15, 2010
I am trying to figure out a way to pull http links out of text files and then output the results in a log. The text files are in folders like this inside a source directory.
/source
./folder1
...folder1.txt
./folder2
...folder1.txt
[Code]....
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Apr 25, 2010
I've looked around the other threads as well as the wget man page. I also Googled for some examples. I still cannot work it out. From the page [URL] I want to download the 48 linked files and their corresponding information page.To do this (the first file) by hand I click on the line that saysApplications (5) Go to the first optionDell - Application Open and copy the linked pageApplies to: Driver Reset Tool Then back on the first page click on the Download button. On the window that opens up I choose to save the file.
Then I move on to the next option (which is Sonic Solutions - Applications) and repeat this until I would have all my files. I do not want to download the many other links on this page. Just the above mentioned, so I can take it back to my internet-less place and refer to it as if I was on the net. I am using the 9.10 LiveCD at my friends place.
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Nov 24, 2010
http links in email on Icedove don't open in Icewease using LXDE:
network.protocol-handler.app.http & network.protocol-handler.app.https are both set to the default x-www-browser, which is pointed to icedove but nothing happens, any suggestions?
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Jul 17, 2010
Evince in non-gnome systems is unable to open external link. The error msg it shows is
Code:
Unable to open external link The specified location is not supported. I have already googled it, however it only says it is a bug, without any solution available. Evince in gnome systems however work just fine. Is there any way evince can use sensible-browser to open external links?
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Aug 4, 2010
I installed Nagios on my Ubuntu 10.04 server using apt-get and when I accessed the web console, everything was OK. I made some changes to apache (creating some new virtual sites) and since then Nagios gives me a warning message for HTTP with the message, HTTP WARNING: HTTP/1.1 404 Not Found. The sites that I created are working perfectly. I noticed that the attemps are 4/4. Does this need to be reset or does Nagios automatically reset that once it detects the issue is resolved?
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Feb 13, 2011
How would a make files in /home/user01/file available on the web as [URL]? Is it possible for me to have anyone to access that link to log in as user01?
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Mar 16, 2011
I would like to connect via SSH or similar to my servers located in a remote DC from a laptop running centos5. I normally do this on a puter running dows, and using secureCRT. Just wondering if centos has something built in for this, or if there is some preferably free software I can get.
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Mar 22, 2011
I've got the following two subnets.
Code:
Subnet 1: 10.1.0.0/24
Subnet 2: 172.16.0.0/24
A machine in subnet 1 is natted to a static address in subnet 2. For instance 10.1.0.10 is natted to 172.16.0.10.
I have achieved this with the following iptables rule. (in addition to enabling forwarding)
Code:
iptables -t nat -A POSTROUTING -s 10.1.0.10 -j SNAT --to 172.16.0.10
So far this works perfectly. What I want to do now is to add another rule that only nats the machine in case it is NOT accessing subnet 1.
In other words, when this machine accesses any other machine in subnet 1, it should show up as 10.1.0.10. Whenever it accesses subnet 2 of anything else, it should appear as 172.16.0.10.
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Jun 4, 2010
I have two machines, a laptop and a desktop, both running Lucid. each works fine, but... I can't seem to mount the external drives attached to either machine over the network. I can share folders from the internal drives fine but when I try to access an external drive from either machine I get "unable to Mount volume". Is it possible to mount the external drives across the network? If so, How?
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May 11, 2011
when I click an external link, it opens a NEW Firefox window, instead of opening a new tab in a ALREADY OPEN Firefox instance, and worst of all, IT STAYS IN THE HOMEPAGE, not going to wherever it was supposed to.this is bad, and it renders useless some software functions, like Gmail Notifier, when I click to go to my account.if I set Chromium as default browser, it works like a charm. I believe this is happening since Natty upgrade. and I'm using Firefox 4.
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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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Apr 9, 2010
I need to access a Windows Server 2000 machine using a Linux machine via KDE, but that will migrate to Gnome. The Linux user to connect to Windows machine, you should open an application 'XYZ' automatically, and only this, denying any unauthorized access. When you close the application 'XYZ' communications (RDP?) Should be terminated. Do I need a log of accesses and possible attempts to circumvent the system and access other application.
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Jul 14, 2009
Have done a bit of Googling around this but got totally swamped so will try here. Basically we are running a CentOS server which hosts a number of virtual hosts under Apache. Recently I needed to set up a development environment for another site using Ubuntu and have this running and accessible on the LAN from a VMWare image. I'm using bridged networking so the VMWare machine has its own IP on the LAN subnet.
I've set up a DNS to point to the external IP of the physical host but can't figure out how to route traffic requested on this domain to the VMWare host. I've basically tried two approaches (configuring a proxy web server and reverse proxy in an httpd.conf file and mucking around with iptables forwarding rules but without success.
Ideally I'd like somesite.somewhere.com to point to the VMWare IP but I could live with a custom port on the end if thats whats required.
To throw further complication into the mix I need reliable communication between the VMWare machine and external mail relay servers in order to debug any issues with mail bouncebacks, embargos etc.
Any idea what's the easiest way to accomplish this?
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Nov 11, 2010
I have a registered domain that resolves (via dyndns) xxx.mydomain.com to my external facing router -easy no issues there. Behind the router I have several machines (some VMs) running webservers, mail etc... What I want to be able to do is redirect the external traffic based on xxx to the relevant internal machine and serve the content back to the external world.
I have tried using a http rewrite of xxx.mydomain.com to the relevant machine an it works fine from within my network, however externally the re-direct fails as the master DNS servers have no record of internal DNS setup in my network (obviously).
So is there anything I can do to get xxx. recognized externally? I'm only just starting to get my head around how DNS, HTTP, TCP etc all hang together. Am I barking up the wrong tree with rewrite? Should I be looking at proxys?
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Jun 23, 2010
Ok so I've been all over Google trying to find an answer as to why my MPD server won't properly output over httpd. When I try to connect to it from any source, it gives me a "404:Entity Not Found" error. There hasn't been any useful info out there to solve this problem. Help please! Attached is my mpd.conf file. All my permissions and firewalls are set up properly AFAIK.
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Jun 14, 2010
I have recently downloaded and installed apache2 http server from tarball source (i'm running ubuntu but i think its more fun to use tarballs i don't know why but its how i am) anyway i just installed apache2 and when i go into the servers section of webmin and click on apache web server i get this message:
The Apache server executable /usr/local/apache2/conf/ does not exist. If you have Apache installed, adjust the module configuration to use the correct path. and when i go to the configuration menu i don't understand a word of it.
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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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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 23, 2010
We're having an issue with HTTP POST file uploads on our two Ubuntu PCs. For some reason, whenever one of our users attempts to submit a file in an HTML form, the request times out, usually with a 500 Internal Server Error message. This problem is not limited to one site, but occurs on all sites that use file uploads. Also, the problem does not appear to be with our network, as a Windows 7 PC on the same network can upload files to the same sites without any difficulties. The problem is not browser-specific; we have tested with Firefox, Epiphany, and Google Chrome and all produce the same results. The issue is relatively new, and was first observed within the last month; before this time, both machines had no problems uploading files.
Does anyone have ANY idea what could be causing this? I've tried a number of things, including rebooting the PCs, rebooting the network, disabling IPv6, etc. I'm not very experienced in Linux system administration, but I can use the terminal and am familiar with some terminal-based diagnostic tools, so if you need any additional info or want me to try something, please let me know! I've exhausted my own computer knowledge with regards to finding a solution to this problem.
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Dec 21, 2010
Some time yesterday, I lost the ability to ssh my remote server, or even visit any webpages it hosts.
I've explored hosts.deny, /var/log/secure and even turned iptables off to see if it would fix anything. To no avail. Here's what my ssh login attempt looks like:
Quote:
localhost ~ $ ssh -vv x.x.x.x
OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009
debug1: Reading configuration data /etc/ssh_config
debug2: ssh_connect: needpriv 0
[Code]....
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Aug 24, 2009
CentOS 5.2 64bit 2.6.18-92.el5xen. Use rsync with --link-dest for nightly backups, works well. Was recently asked to start weekly backups to an external drive for off-site storage. The regular syncing works but hard linking seems to be ignored. So the backup is long with no space saving advantage. Here is an example of the command being run:
rsync --stats -axzvl --numeric-ids --delete --link-dest=/mnt/DISASTERBACKUPS/austinBackups/backups/2009-08-21 /AUSTINBACKUPS/backups/2009-08-24 /mnt/DISASTERBACKUPS/austinBackups/backups/
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Jun 11, 2009
Here is my problem, which I think also posted here already but cant find enough solution. I successfully access the web server to its localhost using its IP address (Sample: http://192.168.1.100/index.php), but when I try to access it on other terminal which are also connected to the same network, I cant view it. But it seems that they can both communicate to each other when I ping it respectively both sides.
how can i set something to view the page outside the local server.
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Apr 28, 2010
i need is to have http and https allowed, together with mail server (incoming and outgoing) and ftp, ftps and ssh. all other ports have to be closed.
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May 16, 2010
I own an HP Mini with Ubuntu Netbook Remix, and a Western Digital 500 GB Portable External Hard Drive. I recently started to not be able to view the files on my external, with the message:
Unable to mount the volume 'Elements'.
Details Failed to open $AttrDef: Input/output error Failed to mount '/dev/sdb1': Input/output error NTFS is either inconsistent, or you have hardware faults, or you have a SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows then reboot into Windows TWICE. The usage of the /f parameter is very important! If you have SoftRAID/FakeRAID then first you must activate it and mount a different device under the /dev/mapper/ directory, (e.g. /dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation for the details. I don't think I have any SoftRAID/FakeRAID hardware, and I definitely don't run Windows.
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