Networking :: Internal Ip Can't Talk To Internet / Solve This?
Feb 21, 2011
I configured an internal fake ip 192.168.1.11 on a virtual interface of my server.
I'm running one of my postfix instances on this ip.
The problem is that postfix can't talk to external hosts on the internet when running from this internal ip 192.168.1.11
I get an error in the mail log
Feb 21 22:43:00 localhost postfix-R1/smtp[11372]: connect to 7zips.com[109.169.46.199]:25: Connection timed out
It works fine when I run postfix on real ips, but I need it to work from the internal.
I thought it should just work.
Am I missing anything?
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Oct 12, 2010
I would like to start a streaming audio/talk radio show where I can play music during breaks, talk most of the time about current events, and MAYBE even take callers.
I am now using Blogtalkradio, but the streaming and archiving quality os so terrible that I want to move up into creating my own talk show network.
I'm using Ubuntu 10.04, 64 bit
This is a good example of what I would like to do: The Global Reality Show...the guy uses Sam Broadcaster and pays a "stream bill" due every month, and you can download archives from a server linked to his website or click the application buttons for ways to get his stream:[url]
Now I heard of this thing called IDJC, which I have installed, but I do not have the faintest idea of how to use it, let alone get jackd running properly. It just complains and stops. Nor have I EVER used Sam Broadcaster or anything like it. When it comes to this thing, I'm a complete newbie. Other people on other forums say you can use Shoutcast and VLC and bypass Jackd and IDJC completely.
How to set up your own internet radio station in Linux? I understand its alot more complicated than windows.
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Jun 5, 2010
I currently using Ubuntu 10.04 LTS
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Nov 9, 2009
I have configured CentOS 5.4 as a router/firewall (iptables) as such, and it is working fine:
eth0 - Public IP/Intenet, DHCP
eth1 - 192.168.0.0 internal "net1"
eth2 -10.0.0.0 internal "net2"
I want to add a fourth NIC, eth3, which will be assigned its own Public IP/Internet address (thru DHCP; my ISP provides two). The purpose it to route all net1's internet-bound traffic through eth0, and all of net2's internet traffic to eth3. This allows me to use one router/firewall machine instead of two separate ones. I anticipate that without some specific routing instructions, the default route will be eth0 for all net1 and net2 internet traffic (eth3 will be ignored).
I thought of using just one NIC (eth0) but create an alias (eth0:0), but IPtables (and possible DHCP) can't differentiate between the two (besides, nics are inexpensive). Is there a way to do this through routing commands, or even use iptables prerouting/forward functions (or is using iptables problematic)?
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Nov 21, 2010
My Ubuntu Box has 3 interfaces. eth0 (Internal 192.168.1.0/24)eth1 (External ISP DHCP)eth2 (External ISP Static IP)I need the outgoing traffic to internet for 1 of the internal pc (192.168.1.10) to only go only go through eth2
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Jul 7, 2010
I have a firewall between two different subnets. The reason for the second subnet within the internal network is because I have a mail server that I want to protect. However, we need to make sure that the mail server can communicate with the internal network as well.
Mail server is 192.168.100.100
Firewall is 192.168.100.1 and 10.110.101.5 (and its gateway is 10.110.101.1 to the router)
I go to another workstation and ping the mail server. I can't. It times out. I do the same from the mail server. It times out as well.
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Feb 8, 2010
i have a linux server runnig oracle applications. i need to access this server from putty using ssh through internet. i did by registering my static ip with the dnydns.org and i am able to connect to the server. but now there is no security to authenticate any user as any one knowing the password can login to it.
i thought of configuring the firewall of linux server but the client ip`s are not static and they change continiously. so thought of keeping one more pc between the server and the router which will do the work of authenticating. but i am confuse as how to configure it to allow the packets coming from the internet after authenticating and to by pass the packets generated from internal LAN?
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Sep 4, 2010
I previously had my Virtual Box install of Ubuntu set to have the Network via "host-Only Adapter". But recently I needed to get on the internet on that install, so I changed it to "NAT" and restarted. It still cannot get on the internet! How can I fix this?
Some notes:
1. I have other virtual box installs that CAN get on the internet
2. This one was able to get on the internet prior to setting it to "host only adapter"
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Nov 27, 2009
I am trying to setup a HP blade (BL460) server with 2 nics on sles10sp3. I want one nic to connect to a management vlan and and second to connect to the standard network. It should be possible for a desktop in the standard network to connect to either nic by providing the correct ip address.use this server as our first virtualisation hosts server using Xen. I dont want traffic used to upload / download images to the server through nic1 to effect the users traffic on the standard network on nic2. However any attempt at routing (which Im not good at) has led to the tx traffic all going out the default route (users subnet).
Each time I setup the nics via yast2 lan I can get the standard lan nic working ok. but cannot get the management nic working correctly. The server can ping a workstation on another vlan, but the workstation cannot ping the management nic. The default route appears to be forcing all traffic on the host out through this route, which I presume is normal behaviour. Using tcpdump I can see the ping packets received by the server, the server then responds through the default gateway, which the workstation does not see.
However, this normal behaviour will result in extra traffic on the users network when image downloads are initiated from the management interface.If I use a 172.24.1.0 network routed through 172.24.1.1 router setup as our management vlan , and 200.200.1.0 with router 200.200.1.1 as our lan for general users. Where server ips are nic1 10.1.1.10 and nic2 200.200.1.10 My workstation would be 200.200.1.10. If I ping the server at 10.1.1.10
I get no response. If I ping the server at 200.200.1.20 no problem.
Basically I used the network setup recommended by vmware to manage a virtual server. I actually have 4 nics, I thought by just talking about 2 nics the problem would be easier to explain. vmware specify that two nics should be used for management and two for the Lan. This is what I am trying to achieve, but both subnets must operate independently.
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Aug 12, 2010
Is it possible to use connect to the Internet using my internal modem which i have in my laptop using debian.. Please do help.Ofcourse i can do this with the windows 7 which is also installed in my lap..
I have a MSI laptop with model no. vr440..[color=#404040][/color]
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Nov 23, 2010
I set up a server that has dhcp going. This works 100% as I get ipaddresses. My question is how do these internal computers connect to the internet? There is a proxy that needs to be passed as well...
Is this just a simple case of portforwarding or is this a completely different thing?
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Aug 17, 2011
I have two Ubuntu (Natty's) and a windows 7 enterprise box at home, pone of the ubuntu's is a desktop for email client and a ping box... the other i use with a handful of 1T drives for media storage... What i have run into is, Each Ubuntu box can see the Windows 7 box no issue.. but the win7 box cant see the ubuntu's the problem here is the ubuntu storage is where i stream videos from to the win7... er that is would access them.
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May 14, 2010
I installed Ubuntu on one of my machines a few days ago. It was an oldish CD containing 9.10. Eveything was puppies and rainbows. However, today I updated that machine to 10.04, and it no longer sees my network. Specifically, Windows doesn't see shares on it, and it doesn't see shares on Windows. Further, when trying to make a share (or rather update the one I had previously) I get the following:
Quote...
Again, this is already the newest version.
And, being that I have no real idea what I'm doing, this is where my Googeling skills fail me. I want to reiterate, though, that before I updated today, networking was fine in both directions, i.e. from windows to ubuntu and from ubuntu to windows. How can I get networking to work again?
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Jul 21, 2010
I can't connect to apache from outside the LAN. I can connect to everything else (ssh ftp) from outside.
I'm getting Error 101 (net::ERR_CONNECTION_RESET): Unknown error
My router is configured to redirect port 80 to my webserver. I am getting access logs etc and error logs for missing files (favicon)
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Aug 5, 2011
I'm the System Administrator in a Government printing press and we are using eMacs and MacPro, there was this thunder storm and blown all the network ports and the management bought DM9601 USB NIc network adapters to be used before finding other altenatives but they are not working on the OS X. What should i do? Is there any driver for it or any special configuration on the Mac Os X 10.4 and 10.5?
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Jan 26, 2011
I tried installing the mac80211 framework on ubuntu 10.10 but after i install it and restart my system , none of my network connections work.
i found a solution to that problem which is a very weird solution. because none of the network connections are working . i try to activate the wireless driver from the System->Administration->Additional Drivers. But it fails , but after it fails my wired network connection comes back online. and then i have acccess to the internet . After that i activate the wireless driver again and it works.
This is obviously the worst possible solution ever. So what i don't understand is why the mac80211 framework is causing these problems. after applying my "solution" i thought of checking the modules installed on my system using lsmod and i see mac80211 there. i don't understand why it is still there after i executed the "sudo make uninstall" command . code...
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Aug 2, 2010
I am trying to find someone that can perhaps assist me with the following.
I have installed my notebook with Ubuntu 10.0.4 and need to setup various VPN connections to clients.
After setting up the microsoft VPN connections according to the normal procedures, I try to connect to one of the clients to test connectivity, but the connection fails.
This happens for all the MS vpn's so far.
I had a look at the daemon.log file and found the following message which I can't seem to find a solution to:
<WARN> connection_state_changed(): Could not process the request because no VPN connection was active.
Is there anyone that could perhpas assist me with this as I am not able to work without VPN.
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Jun 19, 2011
I installed the Kde desktop and i'm unable to setup a broadband dsl connection
i have done the settngs in network manager gave password username service name etc.
but the option for connection doesnt appear
the connection works properly in windows as well as gnome 3 desktop but not in kde
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Mar 25, 2010
I'm a total NOOB and I just finished a dual boot Ubunutu Studio 9.10 64bit/Windows 7 x64 install on a brand new i7 PC using a WD10EARS hard drive (with the new Advanced Format) and I gave myself top marks for getting by the mammoth amount of obstacles to accomplish what I have so far.
Item of note: you can NOT do a complete install with Ubuntu Studio 9.10 using a wireless device. The installer ONLY recognizes motherboard ethernet ports. No worries, I moved it to the office and the LAN line and got a complete install. I am using this in my living room though as a Media PC with MythTV and the distance requires me to use WIRELESS.
After a successful install, I was unable to get my brand new, out of box Netgear WG111v3 to establish a successful connection and I need your help. Pardon the length of this post, I will try to organize it as best as I can but I have done a LOT of troubleshooting before posting here. Here's what I did so far:
1. Tested Wireless in Win7 on same PC. Works GREAT! Rebooted, went into Ubuntu Studio 9.10 and got no joy.
2. This page says the WG111v3 works out of box with Karmic and I can state with 100% certainty it does NOT.
3. Went to this page (which is THE best how to out there) and followed instructions. I discovered a bug in wpa_passphrase immediately. I use a very complex passphrase using !#$&@ characters in the mix. wpa_passphrase dies with various errors when it sees these characters because it thinks they're command items rather than part of the text in my key. Try it yourself. Create any long text string with those characters and input it to wpa_passphrase. It dies. Works fine with regular letters/numbers. I had to use this page to get the HEX value for my passphrase so I could complete my interfaces file. On a hunch, I changed my passphrase on the router to be a simple 10 letter word all in lower case. wpa_passphrase changed that to HEX fine, updated interfaces file, rebooted router and PC and got nothing. So it's NOT the passphrase.
4. Went to this page, which again states it works out of box but doesn't and tried all the help there. NO JOY.
5. Tried here too. The help there is good when combined with #2 above but still nothing.
6. Went to unsupported versions of Ubuntu to try some old school tricks. Got nothing.
7. Found this site and it has EXACTLY my problem! I always end up with "No working leases in persistent database - sleeping." when it tries to get an IP address from the router. As you can see, that user found no fix either.
8. I turned off ALL security on the router and left it wide open, updated my interfaces file appropriately, rebooted everything and it still couldn't connect?
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Apr 23, 2010
No wireless upon re-installation of 9.10 Drivers seem installed. No wireless networks detected. code...
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Sep 28, 2010
I can't port forward to ftp behind my firewall, I tried several attempts but none worked.
Can anyone help me solve this?
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Feb 20, 2010
I'm new to ubuntu and using 9.10. I have installed a dlink wua 2340 wireless adaptor and it is working properly. But after waking up computer by standby mode, wireless connection breaks and the wireless device is not mounted. Therefore I always have to shut down the computer and restart again to establish wireless connection.
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Apr 13, 2010
I have a Dell Inspiron 1525. I am unable to connect to wireless networks. I have a fresh installation of Ubuntu 8.04. I have installed Ndiswrapper (ndiswrapper-utils_1.8-0ubuntu2_i386.deb) and the GUI for ndiswrapper. The ndiwrapper GUI reports that the hardware was not found. Yet I am able to connect to the wlan using Windows.
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May 30, 2010
I recently did a clean install of Ubuntu 10.04 and tried using a DLink DWL-G122 dongle for a wireless connection.
It seems to connect to the wireless router, but I cannot seem to access any websites using the wireless connection. Ethernet connections to the computer work perfectly, but ethernet isn't ideal.
The results of the lsusb command is code...
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Oct 11, 2010
I'm unable to get my Ubuntu 10.04LTS to see my Mac 10.6.4 machine.
I've got Samba and AFP enabled under the Mac file sharing preferences.
Attempt1: From Ubuntu, I can see my Mac under Network>Places, but I'm unable to mount the location.
Attempt2: In Ubuntu, I went to Places>Connect to Server and entered the following:
Service: Windows Share
Server: [name of my mac]
Share: [name of my shared folder]
Folder:
User Name: [username]
Domain Name: WORKGROUP
With this entered, I was able to get as far as being prompted for my password, but was still unable to connect.
Attempt3: I followed the same steps above, but left Domain Name blank. Still nothing.
Are there any docs out there for the correct steps? I can only find posts on getting Mac to see Ubuntu, but not the other way around.
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Aug 29, 2010
I use Ubuntu 9.04 and try to get a Sweex LW053 USB wireless card (Ralink RT73/RT2500 chipset) to work. According to the Wiki list in the sticky thread, this one should work "out of the box" since 8.04.
lsusb delivers
Bus 002 Device 002: ID 148f:2573 Ralink Technology Corp. RT2501USB Wireless Adapter
and there is also some wlan0 entry that doesn't look too dodgy when typing ifconfig.
From this I get that my laptop recognizes the card.
I also typed in some numbers such as SSID and DNS server address in Preferences>Network Connections where asked (although the information that I had wasn't 100% what was asked for so I tried to guess what needs to be filled in which fields).
However, I don't get an internet connection (Firefox can't find server...)
What else do I have to (or can I) do?
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Aug 11, 2011
I'm new to linux. I've just installed Ubuntu 11.04. It has all been going ok, but the wireless just stopped working all of a sudden. The indicator light turned off and when I tried to turn it back on (Fn+F2) nothing happens. Sometimes, when I restart the computer, the wireless might work; but if the signal is lost the LED on my laptop turns off and I cannot reconnect. Also, in these strange cases that the wireless works when I restart I can manually turn it off (Fn+F2), but nothing happens when I try to switch it back on.
In the menu on the upper right corner I see 'Enable Networking' is checked, but 'Enable Wireless' cannot be modified.
I have a Dell Inspiron 6400 and the wireless device is an Intel Pro/Wireless 3945ABG.
I have tried to follow some of the threads on this forum on similar cases, but the ones that were comprehensible to me did not work (or I actually might not have understood them either). code...
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Feb 16, 2010
Just installed 9.10 netbook remix on my acer aspire one - No Wireless !
search showed all kinds of comments but few solutions most just claimed it worked or others tried madwifi without success.
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Jan 27, 2016
I have read the wiki and several online tutorials and still cannot get my machines to talk to each other over NFS.Both are amd64 with Debian testing. Tutorials invoke programs that do not exist in testing, instructions are inadequate or too old.
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Jun 18, 2010
I'm running Ubuntu 9.10 AMD64 with KVM and several VMs running the same OS. Everything was running fine and the VMs were using the host's network via bridging. The decision was made to move the server to completely different network. I shut it down, the system was moved and hooked up, and I got it up on the new network pretty easily--just modified /etc/network/interfaces and /etc/resolv.conf. No networking problems at all.
Then I fired up virt-manager, powered up one of the VMs, and made the same kinds of changes. It's not talking beyond the VM server. I can ping the host, but can't ping the gateway. "tcpdump -i eth0" shows plenty of traffic.
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