CentOS 5 Networking :: Possible To Check Current Connection?
Sep 14, 2010I have a email(postfix) installed on my centos, i think it is under some kind of attack, Is it possible that I can check who is connecting my server?
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CentOS 5 :: Check If Current CentOs Is 32bit Or 64bit?
Dec 26, 2010I have got an Notebook whose CPU is 64bit.The Notebook has an CentOS installation. Now I want to find out if this CentOS is 32bit or 64bit.How can I check this?
uname -a
gives something with ....i686 i686 i386...."
What does that mean?Does that refer to the hardware or the CentOS OS? An 32bit CentOS can be installed on a 64bit hardware!I am interested in the OS capability not of the hardware!
Fedora Networking :: Network Manager - Terminating Current Connection
Sep 19, 2009I have installed recently the Fedora 8 in a computer and during installation it was set a static IP with the netmask and gateway. At first it worked well, but after some boots the connection begins to fail. It seems that the network-manager withdraws the static IP and tries
to get connection via DHCP. Below is the /var/log/messages file during the failed connection:
Code:
Sep 19 10:36:53 canario avahi-daemon[1695]: Interface eth0.IPv4 no longer relevant for mDNS.
Sep 19 10:36:53 canario avahi-daemon[1695]: Withdrawing address record for fe80::20d:87ff:fe0c:355f on eth0.
Sep 19 10:36:53 canario NetworkManager: <info> SWITCH: terminating current connection 'Auto Ethernet (eth0)' because it's no longer valid.
Sep 19 10:36:53 canario NetworkManager: <info> Deactivating device eth0.
Sep 19 10:37:07 canario system-config-network[2195]: -+ //etc/modprobe.conf #011eth0 alias sis900 .....
Ubuntu Networking :: Check Which Program Is Using The Internet Connection?
Feb 11, 2010I'm using Ubuntu 9.10. My internet connection is an ADSL which I have set up using "pppoeconf". The connection starts at boot up. I can also start it if needed by using "sudo pon dsl-provider" and can stop it by using "poff dsl-provider".Recently I noticed that when I start my computer, there is some program (or programs) which is connecting automatically to the internet and downloading and uploading a lot of data. The data transferred can exceed 200 mb or 300 mb in an hour. I don't know what is being uploaded or downloaded.I know for sure that no file sharing programs like bittorrent clients are started at bootup so it is strange that this much data to be downloaded and uploaded without me sharing files or downloading files explicitly. The update software also does not run by default as I have opted to start it manually.
Is there any application which shows the programs that are connected to any particular port and transmitting and receiving data?In Windows XP I use a program called "What's Running" which clearly lists the programs using the different ports in the local machine and the remote IP addresses that the program is connected to. It also shows which program is transmitting and receiving data at any point in time. Is there any similar program for Linux?My internet connection is a data limited package otherwise I probably would not have bothered.
Ubuntu Networking :: Check The Network Connection Applet, It Display Active Information Of Eth0?
Jun 7, 2010I have a question regarding the configuration of Network Connection. My wired connection is fine right now and when I check the network connection applet, it display active information of eth0. However, when I click the Configure button, the Network Connection window appears but there's nothing in the Wired panel. Should there be a eth0 in that panel? I remember I had one before, but after I messed with some configuration of VPN, my network became unstable and I remove the Network Manager to try to solve the problem. Since then, there's nothing in my Network Connection window, though I can still connect to my router with eth0. Now even after I reinstalled the Network Manager, I still don't get anything.
View 7 Replies View RelatedOpenSUSE Install :: Check Which Is The Current Codepage On 11.3?
Jan 2, 2011how could I check which is the current codepage on my openSuse (11.3)?
I tried with 'locale'
CentOS 5 Networking :: Create PPPOE Connection On Text Based CentOS?
Jan 1, 2010How can i add a PPPOE connection witch connect automatically on system start up in text mode in centos 5.4
View 3 Replies View RelatedFedora :: Check Current Ext4 Mount Options?
May 1, 2010I was wondering how to check the current mount options of my ext4 filesystems in Fedora 12? The only thing I can see in fstab is "defaults" but how can I know what is behind those defaults.mount command only shows "/dev/sda6 on / type ext4 (rw) but nothing else.I'd like to know a few more things like the data mode used like "ordered" or "journal".
View 2 Replies View RelatedCentOS 5 Networking :: Installing CentOS 5.3 Netinstall Using Eth1 USB Connection
Jun 7, 2009I want to install CentOS from netinstall CD, but it doesn't work for wireless connection, because it just looks up for eth0 connection. Well, I connected server to wired USB connection and it's named eth1. I want to use netinstall CD but using eth1 connection. Is there any way for doing it?
View 2 Replies View RelatedCentOS 5 Networking :: Which Command Can Check If Network Card Is Connected With Media
Nov 26, 2009Suppose that it is not convenient to go behind a machine to have a look.So I want to use a command to show whether the cable is plugged into network card. (Media connected or not)Can ifconfig do this? Or another one?
View 2 Replies View RelatedUbuntu Networking :: SSH And FTP "connection Refused" Check Point Router?
Jan 8, 2010I have a new server running on xubuntu 9.10 behind a "Check Point Safe @ Office security appliance" (a LAN switch with an obnoxious firewall), and cannot make ssh, ftp, telnet, or vnc connections to it from outside the network. All I get are "connection refused" errors. I've made sure sshd, x11vnc, and proFTPd are running when I test the connections, and that ufw (firewall) has all of their default ports completely unrestricted. I've set a rule on the router to allow and forward all connections and all ports to the server, and I've also also put it on the exposed machines list, which reads like it should provide full access to any incoming connection. I still can't make connections to it, and it's driving me nuts. Does anyone have suggestions (or requests for more information)?
(ps- The router isn't really a choice: even if I bought another, I'd have to hide it and hope no one notices the policy breach)
CentOS 5 Networking :: Check If Clamav Is Scanning HTTP Traffic Squid Proxy Server?
May 21, 2011I'm trying to setup a Centos 5.6 Squid Proxy Server with Content Filtering & Antivirus Scanning Incoming HTTP Traffic from the Internet
I then proceeded to setup an configure the Proxy Server, i was able to test and confirm that Squid and Dansguardian Content Filter is working, however i dont know if Clamav is scanning HTTP traffic before it hits the client/server. Is there a way i can check if the Antivirus scanning is working.. is there some log file or real world test i can i can do to confirm that Clamav is scanning incoming traffic or even blocking potential viruses ??
Anyone who has squid proxy server with Clamav configured and its working can share there settings/setup with me and how they tested it ??
CentOS 5 Networking :: No Connection After Fresh Install?
Mar 19, 2009I'm familiar with linux (Debian/Ubuntu), but new to CentOS. I recently installed CentOS 5.2 on a new server for my radio station. I can log in and do everything fine, save connect to any network. I only have a Broadcom wired nic. I know the wire and ethernet jack work fine, so that lead me to the server's settings. I'm not sure if I missed something somewhere, or a similar post (I'm sorry for double-posting if this has been done before).
There is a static IP address set, and that's done correctly.
From what I've seen, someone would like to see /sbin/lspci | grep -i ether: 03:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5722 Gigabit Ethernet PCI Express
CentOS 5 Networking :: SSH Either Times Out Or Refuses Connection
Apr 2, 2009I'm trying to setup a ssh connection from to my house that way I can learn Linux on a box that won't make my boss the sys admin (Im help desk) grind his teeth. He say that ssh port is allowing connections out of the firewall but not in so I can connect to my house. However If I try to connect to my box I get a message stating that the connection has time out. I have port forwarded the 22 to my box and have even changed the port to see if it is my isp blocking me. I am able to connect via SSH internally but when I try outside my house I am running into trouble. I looked up how to disable my fire wall and as far as I know it is.
View 3 Replies View RelatedCentOS 5 Networking :: Locked Out Of TCP Connection On Server
Jun 29, 2009using a terminal on the server,telenet localhost 25 should connect to my mail server.It times out yet I can telnet remotely to my mailsever and get connected.I removed Iptables and that does change things.what ever is causing this started a week ago fri.I was adding to the iptables.I am still a newbie to Linux and Centos so I probably messed it up.
View 2 Replies View RelatedCentOS 5 Networking :: Setting Up Broadband Connection In 5?
Jul 22, 2009how to setup a broadband connection in Centos5.. My broadband connection is over a PPPoE link
View 1 Replies View RelatedCentOS 5 Networking :: Create A Single VPN Connection
Jul 28, 2010I have just taken on a dedicated server sitting somewhere in Norfolk. I have created a website that uses PHP to connect to another remote server in order to interrogate a MSSQL database. This script, running on Apache, uses a VPN connection to connect to the remote server.To test, I have Apache on my laptop at home and just used Microsoft Network Connection to create the VPN connection.I have now uploaded this site to my new CentOS server and need to create the same VPN connection. I understand this is a command level and have been advised to use OpenVPN which I have successfully installed.My problem is I only have the details remote ip address, username and password. I believe I have to use the 'client.conf' script instead of server.conf.
View 1 Replies View RelatedCentOS 5 Networking :: No Ethernet Connection On Thinkpad X40?
Nov 23, 2010I'm trying to connect my newly installed CentOs 5.5 to the network. But although there is a cable connection that has worked well before with other distributions, the network configuration keeps telling me:"Determining IP information for eth0... failed; no link present. Check cable?"Here are the results of the /.getinfo network script:This is a university network that is working well for thousands of students, so the problem is not on the side of the network or the DHCP server.The wireless card is also not shown in the network configuration.
View 1 Replies View RelatedCentOS 5 Networking :: Connection Drops 10 Seconds After Boot / Fix It?
Jun 3, 2010I have had this issue for a while on my centos 5.4 dedicated server with 1and1. If I reboot my system, my connection starts and then drops in about 10 seconds after the system has booted.I connected through the serial console and noticed there was only one thing that seemed suspicious while booting. named could not start for some reason. So my question is - are these 2 problems related? If not, what could be the reason for my connection to drop?At the moment the only way of getting the connection back up is by running dhclient. This works until the next reboot.
View 1 Replies View RelatedNetworking :: Alternative Solution For Internet Connection To CentOS
Nov 12, 2010i am a fresher to linux. presently i am using CentOS for getting some experience in that. but i have a problem with internet connection using in CentOS. i am using prolink USB ADSL2+ modem (H5200U). so, i request from all readers to give alternative answer.
View 2 Replies View RelatedCentOS 5 Networking :: Connection Drops 10 Seconds After Boot / Why Is So?
Aug 21, 2010I have had this issue for a while on my centos 5.4 dedicated server with 1and1. If I reboot my system, my connection starts and then drops in about 10 seconds after the system has booted. I connected through the serial console and noticed there was only one thing that seemed suspicious while booting. named could not start for some reason.
So my question is - are these 2 problems related? If not, what could be the reason for my connection to drop? At the moment the only way of getting the connection back up is by running dhclient. This works until the next reboot.
CentOS 5 Networking :: Cannot Edit Connection In Network Manager
Jan 12, 2011I'd like to use NetworkManager on a freshly installed CenntOS 5 on laptop Lenovo ThinkPad T61p. I followed: [URL] Everything went OK, until I selected my active LAN connection in "Edit Connections". After clicking on "Edit", it's not possible to change anything - all is grayed-out. I'm guessing it's a permission problem. But I don't know the internal structure of NetworkManager and what files to look at. I was also expecting that after stopping the network service "Syetem->Admin->Network" would be inactive, but it isn't. Shouldn't the old network manager be uninstalled as well?
View 18 Replies View RelatedCentOS 5 Networking :: Laptop Doesn't Have Internet Connection
Jan 22, 2011I have installed Centos 5 on my laptop.And I have installed Oracle databases and also VMWARE server 2 software on it.But I see no page opens in firefox browser on this laptop.I can't understand why.The laptop doesn't have internet connection. But the VMWare web access page where we can login to console and create virtual machines doesn't require internet access.I am a newbie to linux and also network issues.How to figure out what is the problem? Are there any step by step guide to investigate this issue?All the pages I open get stuck with "waiting for abc.com" etc.It never opens.Javascript is enabled for this browser.
View 2 Replies View RelatedCentOS 5 Networking :: Setup A Crossover Connection Between 2 5.5 Boxes
Feb 7, 2011i am not able to set up a crossover connection between 2 CENTOS 5.5 boxes.
View 4 Replies View RelatedCentOS 5 Networking :: Network Configured But No Internet Connection
Apr 8, 2011I have installed centos 5.5 / 64. Configured network but - no internet. On my router I see my pc and IP. On centos, Firewall and selinux are disabled. I try to disable network and activate network manager and reverse but no luck internet is not working. Try to ping my router 192.168.5.1
View 6 Replies View RelatedCentOS 5 Networking :: Internet Connection Sharing Not Working?
Jun 9, 2011I am fairly new on CentOS and am in the process of setting up a small home office network that shares Internet access through the Linux (CentOS) box.I have two network interface cards The Linux box is also the DHCP server. My challenge is to get the client machines to access the Internet! I have a PPP connection to the ISP. Essentially I followed these Instructions CENTOS REDHAT Internet Connection Sharing. Pretty straight forward but I am still not able to get clients to access the Internet. I defined the DNS server through DHCP (196.44.x.y). I assumed it has to do with default gateway and it is set as follows: on the Linx box the gateway is my ppp0 link. DHCP uses eth1 (LAN card) fixed IP as the gateway. All clients are reflecting this information. The firewall (iptables) is reflecting the FORWARDING and POSTROUTING rules as advised.
Is there a step I mioght have missed to get this working? I tried to Google but its not getting me far.
Ubuntu Security :: Check For Updates To The Current Version Of Rkhunter And Upgrade To A New Version?
Sep 18, 2010How do i check for updates to the current version of rkhunter and if possible upgrade to a new version?
View 2 Replies View RelatedCentOS 5 Networking :: No Internet Connection In Text-based Environment
Jul 5, 2011I installed CentOS 5.6 (kernel: 2.6.18-238.12.1.el5) with X Window on my HP Compaq 6710b. I also downloaded the firmware iwl3945 for my Intel Pro Wireless 3945 and manually installed it, reloaded the iwl3945 module and enabled NetworkManager. I could then get the wireless network connection worked on my graphical environment. I installed additional software manually by using the terminal window (Applications --> Accessories --> Terminal) and everything worked perfectly.
However, when I switched to text-based environment by issuing the commend "sudo init 3" (changing the user level) and logging in as root, I could not get any internet connection. I tried to use lynx and I got the error message: "Unable to connect to remote host". I am a complete newbie in Linux and I tried to google and search for solution within centos.org but I could not find.
Ubuntu :: How To Check Ftp Connection
May 4, 2010I have a Ubuntu box with a ftp service on. I wanto to upload/download files from my Win XP connected via LAN. I tried ftp command from cmd but I received "Error 530. Login incorrect. Login failed".I'm using root, I am 100% sure about the password (I managed to connect via putty), I just wonder how I can check the ftp connection from xp to ubuntu... maybe a firewall is blocking the port 21?I also tried ftp command in ubuntu (when I was connected with putty) and I got "connection refused" error.
View 3 Replies View RelatedCentOS 5 Networking :: Unable To Connect To Remote Host: Connection Refused
Feb 5, 2009telnet localhost the output is...
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused
I don't understand what is the problem. Its not configured properly how do i configure it?