How to identify the status of the ethernet interafces? on my machine, every interface shows "UP" nn matter the interface is connected or not:
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
I purchased an EeePc 900HD (ASUS). Installed EeeBuntu_3.0 when I run "lshw -c network". I got a "DISABLE" status for my ethernet connection. In this forum I read that I need to run:
"ifconfig *logical_hardware_name* up"
The "DISABLE" status is gone but still no ethernet connection in the Gnome-NetworkManager.
I am writing some application in C, which will access a serial port device (RS232). My application is working good. But if any other application is already opened the port, I couldn't able to identify that. In windows VB program, while accessing comport through mscomm control, i am receiving an error as "Port Already Opened". But in Linux environment, through C program how can i get that? I am accessing comport 1 as follows
fd = open("/dev/ttyS0", O_RDWR | O_NOCTTY | O_SYNC);
My laptop was working fine on wireless till the userinterface changed and it defaulted to ethernet and now it won't let me go back on wireless How do i disable ethernet?
View 4 Replies View RelatedThe way to identify CAT 5 and CAT 6 cable?What are the differences between these two cables..?
View 8 Replies View Relatedhow to identify the icmp packets & marking. this below icmp packets marking is not working.
iptables -t mangle -A PREROUTING -p icmp -j MARK --set-mark 0x5
iptables -t mangle -A PREROUTING -p icmp -j RETURN
with the help of port no or any other how can i identify the icmp packet ?... This below two is working fine
iptables -t mangle -A PREROUTING -p tcp -j MARK --set-mark 0x2
iptables -t mangle -A PREROUTING -p tcp -j RETURN
iptables -t mangle -A PREROUTING -p udp -j MARK --set-mark 0x3
iptables -t mangle -A PREROUTING -p udp -j RETURN
Is there a linux command (or command combination or utility) that can identify all processes (PIDs) that are sharing a TCP/IP stack ?
View 4 Replies View RelatedI'm running Ubuntu 10.10 64bit, and I'm a newbie when it comes to networking.
My issue is that there seems to be a socket bound to a port blocking MongoDB from accessing it's usual port 27017. The strange thing that it was working just fine until recently and I can't figure out what I did to screw things up... I can make it use a different port but the reason why it can't bind to the default port and why I can't fix it is really bothering me. I've tried rebooting the machine even with nothing else running when I try to run Mongo is still blocked giving the following message:
Code:
ropes@ropes:~/mongodb-linux-x86_64-1.8.0/bin$ ./mongod
./mongod --help for help and startup options
Sun Mar 27 14:08:14 [initandlisten] MongoDB starting : pid=2718 port=27017 dbpath=/data/db/ 64-bit
[Code]....
I was wondering if anyone might know of good reference material, books websites etc., that discuss network security issues in layman terms. I would like to set up a dedicated Linux box as a firewall and would like to have a deeper understanding of the different types of configurations that are possible. I run a dual boot system and most of the firewalls I have used on the Windows side are very confusing to me. A lot of the time they give you a pop up that informs you that some cryptically named program is trying to access the network or the internet and wants to know if I want it to or not, 99% of the time I have not idea if it is a legitimate program or not. I realize that this is probably a separate issue (knowing how to identify programs and processes that should have access from those that should not) from setting up a firewall and basic network security but I know that they are related.
View 3 Replies View Relatedhave two internet lines from two isp every one pluged to interface eth0 and eth1 and i have eth2 interface to internel network clients now i need to make some clients to use line 1 and other use line 2 i want make this without use netmask , just for selected IP.
View 1 Replies View RelatedI have iomega appliance, which is based on Debian distribution. There is an NFS share that I have created which is without password.Since it is without password, there are some viruses copied. I want to find out which IP address is the source of these files. In other words, I want to know which PC is copying these infected files on the NFS share.
View 3 Replies View RelatedI have just upgraded to Lucid on Ubuntu. I am a long time Pidgin user. I tried using Empathy with Gwibber, but I can't get Gwibber to update my IM status(es) in Empathy, so I want to go back to using Pidgin. (Additionally, I can't get Skype to work with Empathy.)I installed pidgin-microblog and pidgin-mbpurple, and they allow me to view my Twitter feed in Pidgin and update my Twitter status in Pidgin. However, in Karmic, I was also able to specify certain "status availabilities" (one named "Twitter-Available" and one named "Twitter-Away", for instance) to have the IM status message for these statuses become populated with my Twitter feed. This capability seems missing in pidgin-mbpurple in Lucid (and it seems to be the only thing missing from Karmic).
Is there a way to have pidgin-mbpurple update certain "status availabilities" in Lucid (and I'm just missing something) or is this no longer possible?Equivalently, is it possible to have Gwibber update my status message in Empathy? (I just want to be able to update my status once on one of my three computers - and have it propagate to all my other accounts (IM and social networking) and computers).
After a fresh installation of Ubuntu 10.10 I uninstalled empathy (im using skype). The empathy menu in the evolution indicator was gone after that.I also uninstalled gwibber. But the gwibber status indicator remains within the about-me panel... Uninstalling the gwibber package also removes the me-menu which I want to keep actually. Especially the shutdown/restart... part of it. See attachment.I know there is a shutdown panel-app...but its butt-ugly and it doesnt allow to logon/off.
In another thread I read that the gwibber status shouldnt be there if no account for it is configured... which it is not... I do use ubuntu-one though which is in the same menu... I saw that this issue was addressed at some bug report before, but not fixed yet...
Does anybody know a good workaround to get rid of the gwibber status in the panel while keeping the about me and the shutdown button?
I'm new to the linux networking. Can anyone please explain me how I can get the status of the printer which is connected to a network.
View 3 Replies View RelatedIm trying to make an ubuntu server box my entrypoint to my networking. Meaning itll function as a server, a firewall, and a gateway. so i already installed dhcp3 and a dns server.
I have 2 ethernet cards in it. So now i wonder, should i the second card into a router's modem/wan port and make the router a switch? or should i plug it into one of the routers lan ports?
I have a server with two ethernet ports. I configured eth0 to be static, set at 10.1.10.148. I plugged in another router into the other ethernet port in order to configure that router. I configured eth1 to use dhcp. Using /etc/network/interfaces rather than gnome network manager. When I did this, I lost internet connectivity (internet routes through eth0 of course)
- Why did I lose internet connectivity?
In order to recover internet activity, I had to disconnect the new router on eth1 of course, and do sudo ifdown eth1. That wasn't enough however. After rebooting numerous times and pulling out my hair, I finally tried configuring eth0 as dhcp, rather than static, and this fixed the problem.
- Why didn't sudo ifdown eth1 solve the problem? What information was saved between reboots that somehow remembered that I plugged in the new router? Because my thinking was if /etc/network/interfaces was identical, and the network topology was identical, after a reboot everything should be restored, but it wasn't.
I'm having a problem accessing a network share in windows 7 from Ubuntu 9.10. I can access this share from a Vista computer on the network, but not from Ubuntu. Windows 7 can also connect fine to my Ubuntu Samba shares. I get the following error when trying to connect with SMBclient.
Code:
smbclient -L KRONOS
Domain=[KRONOS] OS=[Windows 7 Ultimate 7600] Server=[Windows 7 Ultimate 6.1]
Sharename Type Comment
--------- ---- -------
Error returning browse list: NT_STATUS_NOT_SUPPORTED
Domain=[KRONOS] OS=[Windows 7 Ultimate 7600] Server=[Windows 7 Ultimate 6.1]
Server Comment
--------- -------
Workgroup Master
--------- -------
I have openvpn server configured with bridged interface on my openwrt router. The client is running ubuntu 9.10 with config:
Client
dev tap
proto udp
remote x.x.x.x 1194
resolv-retry infinite
nobind
persist-key
persist-tun
ca /home/blwegrzyn/openvpn/ca.crt
cert /home/blwegrzyn/openvpn/client1.crt
key /home/blwegrzyn/openvpn/client1.key
comp-lzo
verb 5
(x.x.x.x was hidden)
When the client connects the log says:
WRRRWRSat Jan 9 20:16:03 2010 us=332404 PUSH: Received control message: 'PUSH_REPLY,redirect-gateway,dhcp-option DNS 192.168.1.241,route-gateway 192.168.1.254,ping 10,ping-restart 120' .....
Sat Jan 9 20:16:03 2010 us=343906 ERROR: Linux route add command failed: external program exited with error status: 7
The server is trying to push default gateway 192.168.1.254 to the client and the client is on 192.168.2.0 network as you can see the route addition fails with SIOCADDRT: No such process. This is because the tap interface does not have any ip and the route addition is not possible. The tap interface is not getting the dhcp address through the tunnel, not sure why (this works on XP). To fix the problem I must manually add the ip to the tap interface, and the default gateway, but then i must add dhcp server to resolv.conf to make it work and once I disconnect the computer does not know the old valid dhcp anymore and cannot communicate. Why openvpn cannot get the ip automatically? Why it cannot grab the dhcp from the tunnel? Is it related to the wireless card being managed by the network manager? This works perfect on windows machine (xp sp3).
We are running Ubuntu on VMWare EXS Server 3i (32 bit server). We tried upgrading from Version 9.4 to 9.10. The server will not boot. It throws networking errors then just comes to a blank black screen.
Here is most of the screen:
/dev/sda5 was not cleanly unmounted, check forced. (note - this is due to having turned it off at the black screen - that much I get)
/dev/sdd1: recovering journal
/dev/sdb1: recovering journal
/dev/sdc1: recovering journal
/dev/sdb1: clean, 74772/6553600 files, 15793957/26214055 blocks (check in 5 mounts)
/dev/sdd1: clean, 22599/6553600 files, 15036060/26214055 blocks
/dev/sdc1: clean, 381500/13107200 files, 34291998/52428119 blocks
Filesystem checks are in progress (ESC to cancel):
***** here is where I think things are going bad ************
init: network-interface (eth0) pre-start process (535) terminated with status 1
init: network-interface (eth0) post-stop process(61 terminated with status 1
init: network-interface (lo) pre-start process (615) terminated with status 1
init: network-interface (lo) post-stop process(62 terminated with status 1
/dev/sda5: 105/124496 files (34.3% non-contiguous), 18894/.248976 blocks
mountall: fsck /boot [410] terminated with status 1
fsck from util-linux-ng 2.16
/dev/FileU32-root: clean, 69429/734400 files, 540860/2933760 blocks
init: networking main process (70 terminated with status 1
I recently bought a new wireless router (Cisco E1000) to use in my house. The E1000 supports mixed-mode 802.11n/g/b, which is what I have enabled. It is the first 802.11n router I've had. My netbook (an HP/Compaq Mini 110) only supports b/g. When connected to this new router, I can only see my status as root. NetworkManager shows a little red exclamation point, and 'iwconfig' shows nothing. It's missing in the 'iwlist scanning' list. Even still, I'm connected and can do everything just fine. However, everything shows up fine when I run 'sudo iwconfig' or 'sudo iwlist scanning'. These have always worked as a standard user before.
View 1 Replies View RelatedI a trying to setup a wired connection in my ubuntu machine 8.04. but could not able to connect to internet, the internet status icon in status bar is always disabled irrespective of whether I connect the cable or not.
View 9 Replies View RelatedI want small facebook tab like widget on my desktop.It is available in kubuntu.Is there any way to create it??I should be able to view updates,update my status etc
View 1 Replies View RelatedI am basically wanting to use my Ubuntu 10.10 computer as a router. Note: Before you say just get a router please note that I am poor/cheap. I have two ethernet connections and one wireless connection on my netbook. I want to share the internet connection that is going into one of the ethernet cards through the other ethernet card and the wireless card.
DSL-->1sr Eth --> 2nd Eth (currently works)
DSL-->1sr Eth --> Wireless Card (Adhoc) <--(connects with limited connectivity AKA no internet)
The 2nd Ethernet card already has working internet, but when I connect to the Wireless card (through an Adhoc network), it cannot get an IP (I believe).
I have to implement hardware redundancy.I have 2 linux machine for this and each have similar configuration/hardware. Lets say two machine Linux1 and Linux2. Currently Linux1 have one NIC and it has 4 IP address bind on it. Now I have to down the Linux1 and up Linux2 with same Ip addresses.
Could it possible to configure all the Ip (same)address on both Linux1 and Linux2 and Linux1 have eth:x status UP while Linux2 have eth:y status down.
I am trying it but on Linux2 machine I cant able to create multiple Ip interfaces with down status.
I can print very well over a USB cable, however I'm having trouble printing over the Internet (F13). The errors that I get are:
job-printer-state-message Unable to get printer status (Not Implemented!)
job-printer-state-reasons [u'none']
Printer status usually shows up as OK until I actually start to print and then I end up with an error message and nothing prints. This seems to show up with any type of printer connected to the internet.
I'm new to Fedora 10 and still a newbie with Linux in general. I installed F10 on an old PC I had....and the install went well..however, I'm having Internet Connectivity issues.
Here is what I did so far:
Did an ifconfig command and I have the following:
pan0 Link encap: Ethernet HWaddr D2:30:36:AF:61:95
inet6 addr: fe80::d030:36ff:feaf:6195/64 Scope: Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:30 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes: 0 (0.0 b) Tx bytes: 8676 (8.4 KiB)
When I go to the Network Configuration Panel I see the following:
Status: Device: Nickname: Type:
Inactive pan0 pan0 Ethernet
Tried to activate and it states Activating network device pan0, please wait... determining IP information for pan0.... A few minutes pass by then. It indicates it failed. Cannot activate network device pan0! I have disabled the Controlled by NetworkManger and enabled the Activate device when computer starts.
I m trying to get the b43-fwcutter working with a b4312:14e4315 chipset, it works on 10.04 intill i have to re-boot (?) then it just has no wireless at all, i�ve tried upgrading the kernel to 2.6.32 using ubuntu 9.10 but i get the error status 10 build failed. I am pretty new to linux (and to great with computers full stop), i�ve tried following tutorials i have found but each time i end up with no wireless or a installed driver that doesn't detect any app...
I have managed to get the STA driver working in the new kernel, but when i install b43-fwcutter and remove the bcmw-kerenel-source and re-boot i have no driver at all (?), i am really out my depth here but would like to get it working without it crashing like i get with 10.04
The superuser will get a mail about the system memory free status every minute after 9pm?
Which is Correct:
1. * 21 * * * free
2. * 21-0 * * * free
how to use a ethernet conenction(Marvell Yukon 88E8039 PCI-E Fast Ethernet Controller )in ubuntu...my internet requires user name and password ..can u even tell me how to config the user name and password
View 3 Replies View RelatedI installed 10.04 today, and I can't get any connection through the LAN. I've tried some stuff on my own, but I've been unsuccessful so far. It's not a hardware or connection issue, as it works perfectly fine in Windows 7. I haven't had this issue in any previous version of Ubuntu (or any Linux distro for that matter).The weirdest part is I booted from the installation CD as as LiveCD, and everything worked perfectly fine. It only stops working after I actually install it. Here's the results of ifconfig:
eth0 Link encap:Ethernet HWaddr 00:17:31:d8:d5:76
inet6 addr: fe80::217:31ff:fed8:d576/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
