Networking :: Applications Use The "wrong" IP Address?
May 3, 2011
I have a weird problem. My system has two network adapters, one with a 192.x address and one with a 10.x address. I connect to the Internet over a proxy that also has one 192.x address and one 10.x address. The name of this proxy is added to /etc/hosts with the 10.x address. Additionally, the network settings for the 10.x adapter include the proxy as gateway. The 192.x adapter has no gateway. If I ping the proxy, it is correctly resolved over the 10.x address.All my applications are set toirectly connect to the Internet".Some apps (the "good" ones) use the 10.x address to connect to the proxy, while some others (e.g. Firefox, the "bad" ones) use the 192.x address. The latter fail to connect to the Internet because the proxy is configured to let traffic through the 10.x adapter only
my network expertise is tenuous at best. This started because one computer on my network is having trouble updating Google Toolbar information. This is a laptop which joins other wifi networks outside of the house.
I updated Kubuntu from 8.10 to 9.04. After the update, I saw a problem with VPN connections. I am using an mac pro with 2 ethernet ports. Only one of them is connected to switch. I am using a static IP in my local network. The problem is that I lose dns information after connecting and disconnecting to a VPN by KVpns.As I am using static ip, I entered my dns server to resolv.conf file with "nameserver 192.168.128.4". My interfaces file is as follows:
I'm trying to get dhcpd to use a specific IP address as the source address for responses it uses an IP address for. I coded "local-address 172.30.0.4" in the config file. For some responses it uses this address. For some other responses it does not. In those cases it uses the IP address that is the first on the interface. Is there another configuration I should be using, instead?
After installing wqy-zenhei chinese font, everything used it perfectly except Midori browser. It seems to be stuck on the ancient 'fixed' font set, which is abysmal for Chinese. It also takes ages to load a page with Chinese, pretends to freeze for a minute or two. I've played with Midori's appearance settings, selecting UTF-8, but to no avail.
Hey guys. I have a client computer PXE booting from my host computer and it is supposed to give the client the ip address 172.16.0.100 however instead it gives it the ip address 172.16.0.208.
I have this set up working with two other computers and there is no noticeable difference other than mac addresses for the network card.
Here is an extract from my '/etc/dhcp3/dhcpd.conf' file...
I have quadruple checked the mac address of the client and it is definitely "00:07:E9:32:16:81" so why is it not giving it the IP address that I have specified?
I wrote/cobbled-together this nifty sendmail script to read some logs and take some disk stats. basically i'm reporting on rsnapshot. When I run it as
Code: sudo /etc/rsnapshot/mailSta.sh Everything works wonderful and the emails arrive as expected and fires off an email to two accounts at a remote server
I have an HP Pavilion A6750F with an AMD Phenom 9650 Quad Core. 8 GB memoryThe NIC is a REALTEC Semiconductor RLT8111/81688 PCI Express Gigabit Ethernet Controller.The actual MAC address for the NIC is 00:24:21:55:DE:40I have loaded CentOS 5.3 on this host three of four times in various configurations and patching levels.THE PROBLEM: The system identifies the NIC as having MAC FE:FF:FF:FF:FF:FF.When this happens, the network connectivity obviously stops working.It identifies everything else OK, just maps the wrong MAC.I'm no sure how to troubleshoot this problem. I tried rebooting a couple times and once that fixed it. Usually it does not. I reloaded (gasp) Windows Vista on it and it worked ok.This last time, I reloaded CentOS it hung on the bootup (ASK ??), I reset it, it rebooted and everything looks ok; for now. The system says it is presently using driver r8169
I just setup an application (phpcollab) on a linux machine, I was able to browse the app using localhost, but each time i try browsing it using the ip address, a blank page loads with a message saying "No input specified".
Whenever I try browsing the app from other systems on the network, I get a page cannot be found error message even though the other machines are successfully pinging the linux machine's ip address.
I need to browse it with the ip address because the app is to be accessed from other machines on the network.
Currently my OS is Ubuntu 9.04 Jaunty Jackalope Desktop OS and my web server is Apache2. I have a public address 60.x.y.z and my pc local address is 10.x.y.z. I have a web app in my Apache2 which currently run in localhost(10.x.y.z).
I would like to enable the web app so that it could be browse from outside. I know there maybe some port forwarding process and some commands involved in order to do that. But I have no idea on the steps to do that.
I am working on implementing a protocol on NS2.34 .I really need help to solve this problem . Actually , I don't now whether the problem is generated by the tcl code or the c++ code when I run the simulation, I get this result :
Code: num_nodes is set 64 INITIALIZE THE LIST xListHead 34 45 channel.cc:sendUp - Calc highestAntennaZ_ and distCST_ highestAntennaZ_ = 1.5, distCST_ = 550.0 SORTING LISTS ...DONE! code....
I have a Suse 11.2 machine named "susepc" on a network with some other windows machines. From the Suse 11.2 machine, I try ping winpchere winpc is the name of a windows machine on the LAN but the name resolves to an odd ip address:PING winpc.HOMENET (72.215.225.9)he "HOMENET" is the correct name of the windows workgroup, but the ip address is completely wrong. My LAN is based on 10.20.x.x and the winpc ip address should be 10.20.0.100. I can "ping 10.20.0.100" and it works correctly.Some things:- DHCP server is on the router- pinging from winpc to susepc works perfectly ("ping susepc" resolves to the correct IP address 10.20.0.101 and the pings respond)- "net view" on winpc lists the susepc - SAMBA is installed on susepc- the Netbios name is set to susepc- I have a shared folder on susepc that I can see, create files in, etc. on winpc with no problems.- IPV6 is disabled on susepc- I have tried setting up susepc as a WINS server (Wins Support) - I have tried setting up susepc as a Local Network Browser
Version 10.04 LTS. Installed desktop version and network worked but I needed a static IP address and the install configures for a DHCP configured address. I tried changing to static address using the System->Preferences->Network Connections application but was unable to get the system to come up with the network up.
So I manually modified the /etc/network/interfaces and the /etc/resolv.conf files. I restart the system but when I do an ifconfig, I don't see a configured IP address on eth0 (only the loopback address). If I run /sbin/ifup eth0 everything then works fine and ifconfig shows the correct address bound to eth0.
I'm running Ubuntu 10.10 and I'm having problems trying to assign it a static IP address. No matter what I put in the Preferences->Networking area (identifying the interface as Manual)... it still will query DHCP for an address if I run the dhclient command. I'm using to using ubuntu server where I just set the IP in the interfaces config file.
I am running my own Postfix mail server. Some time ago I noticed that most email was rejected because of the server's dynamic IP address. So I got a fixed IP address. However then I noticed that some mails got rejected due to failing the reverse DNS check. So my ISP told me to get a range of IP addresses and they could then create a PTR record for one of those addresses. That is now running but it turns out that the IP address used for the PTR record is a ... dynamic IP address. So Spamhaus PBL rejects my emails again.
I have a ubuntu server 9.10 installed with exim4 as MTA. I configured a mail address on it (let's say me@example.com). Before i had it working i had a other email configured (let's say me_2@example.com). At the time i had this one it didn't work i removed exim4.
Now i can successfully send mails with it by the configured me@example.com. I also configured the password for this, but when i receive the mail the old configured mail is presented as "from" (so from: me_2@example.com).
Anyone knows how this can be changed so it says the mail is from me@example.com? The mail is not an alias, and in a mail client they work separately.
I have a few external IP's assigned to me by my ISP. I have IPcop as my router/firewall. I am wondering how to bind 1 of my external ip's to my internal ip address. So I do not have to port forward, etc. For Example, 77.77.77.77 to 192.168.1.123 and on the server it see's the external IP address.
In my job I use some ethernet embedded devices. They take an ip address from dhcp server or auto ip. I only know mac address.How can I obtain ip from mac address? In other words I need a rarp packet generator.
I dont know for what reason, since 2 days, I started having this message whenever I try to start httpd.I commented "Listen 443", restarted httpd started correctly. I needed to comment "listen 443" in order to be able to start httpdWhat is strange is when I do
I have a dedicated control computer that can only be accessed with web-browser (with its ip-address). My DHCP-server gives a static ip-address to the control computer (base on its mac-address). Somehow and after some time the control computer looses its ip-address (can't ping to it any more) ... and then I have to reset the control computer to get it to pick up the ip-address ... this is not a good solution since the control computer is not nearby. is there a way to force the control computer to renew its ip-address based on its mac-address
My security software has picked up multiple port scanning detections on my router/network and only the IP addresses are available. Is it possible to find out what the remote mac address is to see if the IP source has been spoofed? I've got a couple of different IP sources which were found scanning my ports.
I don't know if my IP and the remote IP address are on the same network or subnet for that matter which is the reason for my wanting to know what the mac address is to find out if its coming from the same remote machine.
Well why all my ips are getting the speed I mentioned in delay pool, even 192.168.0.134, as I have excluded it in delay pool. what is wrong with the configuration. I want 192.168.0.134 to get maximum speed available, while rest of the network goes with the mentioned speed.
I have a peculular routing problem on my hands. I have a server running in my office. it has various services running on it (httpd sshd etc.) in order to access these services I have a domain name pointing to my IP.If I try to connect to the server from an external IP, all is fine and working as normal.However, if I am connecting from the interal lan to the server, my domain name resolves to the address of the routerSo for instance everywhere on the interent my domain name resolves to the correct external IP (12.23.34.45) which is then connecting through my cable modem (12.23.34.45) to my router (192.168.55.66) and directed to my server (80.80.80.80)however if I resolve my domain from within my lan, I get my routers ip 192.168.55.66 so trying to connect to my server times out while connection to the wrong device.My network setup is very simple. nothing fancy.I think I'm using google's 8.8.8.8 for my dns server
Let me explain: I had the 10.04 LTS Beta, and upgrading until today. I got the wireless card ( the notorious broadcom ) in the beta by adding the CD to the repository, installing through synaptic ( the broadcom drivers available from the CD ), then selecting the driver from the Hardware Device Manager, enabled, restarted and was online.
I thought the Final version would be just as smooth right? I didn't upgrade because the OS never showed up in the Beta's Software Updates, so I figured to just do a fresh install, my biggest issue with Linux in general was solely it's conflict with broadcom, never anything else. So anyway, In this Final Release, I go to do the same routine, check this out: The card wasn't even showing up this time, wasn't being recognized! In the beta, it atleast showed up. That's minor but would be major to a new guy.
I figured to do the synaptic again, add the cd then the b43cutter( i think it's called ) and succeeded, got the Card to show this time. When I went to add the other driver ( the bcmwl-kernel ) the file that would have the driver to be enabled, it tells me "File Not Found!" don't give me the cop out of "Hook it up to a cable modem and download the driver" bid because that just pisses people off, we don't all have the means to carry around massive PC's to a cable modem.
What I hope to expect is someone telling me to download a file and have it on the desktop then trying it that way because I know about all the other tricks, and I think you can see, I tried em. I'm curious to know why it worked in a Beta release and not now
While running some live tests last week I saw an odd situation where netstat appeared to be displaying the wrong PID and process name for TCP connections. I'm trying to figure out if this is just a strange netstat bug or if it could indicate something odd is happening with our software.
We have a main program which establishes a number of connections, including connecting to a JMS server and listening/accepting a TCP connection. The main program also creates a child process which it uses to communicate with another server. On at least three occasions we saw a situation we saw netstat reporting all the expected TCP connections (correct ip/port for both source and destination), however the child process, instead of the main, was listed for the PID. The main process was still running but netstat no longer reported any TCP connections established by the main program. The main program continued to function correctly, the JMS communication continued to work and we believe the other TCP connection was functioning correctly despite the program supposedly not having any TCP connections.
I'm wondering if this could simply be a bug and/or obscure functionality of netstat that I don't understand which would cause netstat to report the child process as 'owning' the parents TCP connections. I don't know how this would happen or why the parent would continue functioning despite the problem otherwise.
