CentOS 5 Networking :: Unable To Get People Connected Through SSH?
Dec 10, 2009
I am using centos 5.4, recently i come to know that people are'nt able to connect to my system using ssh.1. but i can easily connect to them. 2. I checked the firewall settings also, it seems ok to me.3. I tried restarting sshd also. " /etc/init.d/sshd restart " but to no avail.4. Before when i was using 5.3, it was not a problem..!!5. I tried the following command on other system. It shows the following output.
I have a fresh install of Fedora 13 on my Toshiba Notebook. I am able to connect to the internet but can not browse neither by Ethernet or wireless. I have an Intel Pro/Wireless 2200BG wireless card and a Marvell Technology Group LTD 88E8036 PCI-E fast Ethernet card installed. The command ifconfig shows an ip address. I am able to ping by URL and IP address. It does the same with the firewall disabled. I have also disabled the iptable & ip6tables in the services. I have even set fire fox not to use proxy settings. I am just not able to browse at all.
I am using ubuntu (11.04) here, when i connect Bsnl broadband link(wired connection). Internet is connect automatically But unable to instal, upgrad and access Internet pages ..
I have an external hard drive connected to my router. From Windows I can access it, but from Ubuntu I can see the hard drive, but when I try to access, I'm asked for a password. However my network does not have a password neither the hard drive. What must I do?
I have a Dell Mini 10v with a fresh install of latest Ubuntu Netbook Edition. I have enabled proprietary drivers in order to get the WiFi card to work and managed to connect at home, starbucks etc. Good stuff.
For some reason I can detect but not connect to the WiFi at work - I get prompted for the pword and after entering it the WiFi indicater will pulse for a while only to return to the pword prompt. yes, I have the right pword and can connect my iPhone and other laptops. I am really puzzled by this and really need to get on the WiFi at work - wired connection works.
my colleague has the same dell model with windows 7 installed and is able to connect fine - I really don't want that @@@@ installed just to get WiFi. I know password entry error is the obvious solution but I connect new windows devices to it routinely and had other people try too.
can't access internet. The up and down icon appears by the network connection (upper right hand corner). When I review connection properties, I see that the computer has a valid address, subnet, gatway, dns, etc... But it still can't connect to the internet. I can't ping external addresses either. But I can access internal addresses (local router).
I have Ubuntu 10.04 x86 installed, trying to get teamspeak 3 beta30.I have followed this guide: http://robert.penz.name/296/howto-in...u-10-04-lucid/
And can not get my network setup correctly to allow people to connect externally from my LAN. I have forwarded every relevant port I could find to the computer hosting TS, I forwarded them first as their respective protocols, and then as the combined UDP/TCP. I tried Forwarding single port numbers, and then port ranges.I have also tried uninstalling selinux.I have tried connecting directly to my cable modem with the server.I had this working perfectly three months ago with all the same software, using the same guide I listed above.The only thing I can imagine has changed is my operating system itself with system updates.
My network looks like:
Comcast cable modem--->Netgear WNR3500L Router----->Ubuntu 10.04 x86 desktop edition
what else I could possibly check? I can connect to and manage the TS server fine using localhost:9987 or 192.168.1.x:9987, it just wont allow any connections from outside the network.
I have a program that attaches to an interface. I can run two copies of the program on two systems (each running one instance), connect it to a switch, say 1.1.1.1 & 1.1.2.1. In this configuration two instances of the program can communicate and everything is fine.
Now, to reduce cost, it want to use only one system with two nics connected to the same switch, running two instances of the above program, each instance attached to two interfaces respectively on the system. I have the following settings:
eth1 Link encap:Ethernet HWaddr XXXXXXXXXXXXXXX inet addr:1.1.1.1 Bcast:1.1.1.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 eth2 Link encap:Ethernet HWaddr XXXXXXXXXXXXXXX inet addr:1.1.2.1 Bcast:1.1.2.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Suppose 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?
I know it's very easy to share printers in Ubuntu, just went to System, Administration, Printing, Server Settings, Publish Printers connected to this system. VoiláMy question is:How can I create an access list so only certain IP addresses are allowed to see it?
i want to resolve the above error. I'm using systemimager to autoinstall system images on pc's connected in lan. while doing this i got the error No DHCPOFFERS received. Also at the time of booting my pc it shows the message No dhcp and/or proxyDHCP offers recieved. But i've started the dhcpd deamon on my pc. Also the systemimager rsync deamon is running. The two pc's are also connected in lan properly.
Still while autoinstalling the image on client it fails showing the error message... No DHCPOFFERS recieved. what do i do in order to make my autoinstall work properly? How do i come to know whether the dhcp server is running or not? What will be the exact problem in autoinstalling?
Heres the set up I have: one eeepc running ubuntu netbook. with a usb wifi dongle, this is connected to a parabolic antenna i made out of pizza boxes and tin foil. One fujitsu laptop running ubuntu 10.10. the eee connects to the internet via the dongle. then the laptop connects to the eee. I set this up by using network manager. I created a new wirless connection and called it "UbuntuAdhoc". The on-board card connected to this without issue and the laptop was able to connect to the new wireless broadcast by the eees on-board card.
This worked perfectly untill I rebooted the eee. Now the eee is unable to conect to the internet if the on-board caard is conected to "ubuntuadhoc". also the dongle now wants to conect to "ubuntuadhock" too.
i am not able to port 8080 on my CentOS VPS server.I have followed all the instuctions as mentioned on iptables wiki page.Also I am able to telnet my ip address and port number, But can not access from browser.
I'm running Ubuntu 9.10 as a dual boot along woth Win PX Pro x64 bit. I'm new to Linux and I need help. For the life of me I can't seem to get connected to the Internet. I have cable high speed with a router and 2 laptops on the network.
I am trying to scrape all of the info off of an old Fedora disk so that I can referb the box and put new stuff on it, but for some reason I can't get the permissions (even as root) to write to the disk.
It is currently mounted under /media/backup and I can browse it all I want, but still can't write.
I have a Rogers mobile Internet stick. When I plug it into a Windows laptop, it installs software that manages Internet. Would I be able to get Internet if I plugged it into my server running Ubuntu 10.04 LTS? What do I need to do to download Apache Web server onto my Ubuntu? I searched for Apache in Software Center but no results I'm not connected to the Internet so no packages updates so far.
In my office i have a network of 172.16.31.0 and a squid proxy server running, all other systems have windows XP and one system has centos. On centos system i have three lan cards and i want to test some things on it. So i assigned another IP on it of range 192.168.7.0/24 and same range on another windows system. And all the systems connected through a same network switch.
Unable to ping between Centos and Windows system. If i ping from one centos to windows system with the series of 172.16.31.0 then it replies very well but same thing is not happening in other 192.168.7.0/24 IP series.
I have a server in my house with webmin and virtualmin installed et i made a mistake.Ive created a virual server and ive change the lan ip adresse. 192.168.2.30 ive change it for 192.168.2.31.Now of course nothing work. Im not able to connect via ssh via another computer.So, on the server i write ifconfig and it tell me the adresse is 127.0.0.1 and no more adresse like 192.168.x.x.
On my Centos 5 box my internet won't work. I am unable to get update and I can't download any native programs. But I have Samba running and I am able to access all my files for my other computers.
I am trying to access my company VPN using my Centos 5.5 laptop. I have the vpn client certificate issued by my company's IT dept. I am able to access the webmail using the same certificate which I installed in firefox. But I would like to know how to use this certificate to sign in to the VPN. Some of my colleagues use the Cisco VPN client v5.0.? software and the vpn client certificate to login. It works fine. But I would like to do the same with Centos.I tried connecting using vpnc. I converted the pcf file to conf using pcf2conf. Converted the certificate to .pem file. I replaced the /etc/vpnc/default.conf file with the pcf2conf converted file. Following is the converted conf file:
IPSec gateway example-vpn.companyname.com IPSec ID <groupid> IPSec secret <groupsecret>
I installed the VSFTPD from YUM and installed the webmin module.i can connect to the server with Telnet but can�t list files.When i try to connect with a FTP client i get the following errors: An error occured openig that folder on the ftp server. Make sure you have access to that folder.
200 Switching to ASCII mode. 227 Entering passive mode (172,20,1,5,69,210)
I have a VNC connection running to my Ubuntu 10.04 server [URL]. This was running fine for a day or 2 after that, sometimes it worked and sometimes not. When it didn't work, I could connect with VNC (i got a gray window with the cursor) but no login screen was shown.
After some testing I now know what the root cause is. When I disconnect the screen from my server, I don't get the login screen. When I connect the screen (even if it is not powered) after a reboot, I can see the login screen. Next I was looking for some logging that could indicate some problems. I looked into "/var/log/Xorg.0.log" and there I see a difference when I connect/disconnect the screen. When the screen is disconnected, the log says:
Code:
(II) intel(0): Integrated Graphics Chipset: Intel(R) Pineview G (--) intel(0): Chipset: "Pineview G" (II) intel(0): Output VGA1 has no monitor section (II) intel(0): EDID for output VGA1
When I attempt to add software i get the following error:
Unable to Retrieve Software Information
This could be caused by not having available connection.
Cannot find a valid baseurl for repo: addons
To get my browser to work properly, I have to specify a proxy (manual) and use the IP address of our proxy server. After this, I'm able to get out through the internet using my browser. Not sure why I fail to get software updates though. I used the same setting in Proxy - Control Center. Repository Manager show's CentOS-5 - Addons mirror list as :
I've installed centos 5 on an old computer with success and it works great.I can access the web server hosted on the centos server from any computer on the wireless and wired local network. I can also use ssh (putty) and nx client from any computer on the local network (wired and wireless) to access the centos server.On the wireless router I've configured a port forwarding to the wireless network interface on the centos server. I can access the centos server from the outside (internet) through this port forwarding both through http and ssh or nx client.MY problem is that I can't access the centos server from the internet through the wired network interface. Any attempt to view a web page or login with ssh or the nx client will timeout.
I have Centos 5 installed on a PC in the local network. I have installed the RPM dhcpv6-client-1.0.10-16.el5.i386.rpm on this PC to configure it as DHCP V6 client. The RPM was installed successfully, and I have done modifications to the following files:
1. /etc/sysconfig/network, set the networking to yes. 2. /etc/sysconfig/network-scripts/ifcfg-eth1 set the BOOTPROTO=DHCP.
Now the problem is when I start the client on this pc as dhclient, it throws the following errors, and logs out after some time. All the network configurations were lost and the PC gets disconnected from the network.
[root@ServerB]# dhclient Internet Systems Consortium DHCP Client V3.0.5-RedHat Copyright 2004-2006 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/
I just moved into a new apartment and now connect via DHCP. Everything seems fine network-wise, except that when I'm at work I can't connect to the home box. (CentOS 5.3 x86_64) One thing I noticed is that I can't really determine my "true" IP address. What I mean is that it looks like my IP is 192.168.0.190, but when I use linuxdcpp, and enter a hub, I'm told my IP addr is actually something like 71.192.163.206. Here's some info:
