Securely copy files to Linux across a network

Use scp to copy files securely from one linux computer to another over a network. $ scp -r /folder/folder1 user@computer.com:/home/user/folder <enter> where: /folder/folder1 is the source folder -r is for recursively copy user@computer.com: is the destination computer. This can also be an IP address /home/user/folder is the destination folder. Once you type above command, you … Continue reading Securely copy files to Linux across a network →

Nmap online – Network scans from the internet

You can use http://nmap-online.com It is the equivalent of scanning a system or network for open ports from outside of the network you are in.

Connect to your Computer using SSH from a Nokia E63 smart phone

To connect to your computer over your home network or the Internet you can use SSH to securely route your communications to your computer from another device (computer or smart phone). Pre-requisites: You have configured SSH on your computer running Linux. You have converted your private key in your ~/.ssh folder to putty required format. … Continue reading Connect to your Computer using SSH from a Nokia E63 smart phone →

Set up SSH using certificate authentication

You want to connect from the internet to your computer. Internet is an insecure medium to use. There are a few options. You could use a VPN like OpenVPN, or you could use Secured Shell using OpenSSH. Here is how you can connect to your computer using SSH. Pre-requisites: OpenSSH and putty installed on your … Continue reading Set up SSH using certificate authentication →

Tata Indicom USB photon drivers and DNS Servers

DNS Servers 202.54.29.5 202.54.10.2 Drivers at http://www.sitsvc.com

Unbind MAC address for DSL Internet ISP

Many ISPs bind the MAC Address. If the NIC card changes, the internet stops working. To correct this problem: Note down your old MAC address # ifconfig eth0 hw ether This unbinds the old NIC and you can put the new MAC next.

Connect Reliance Phone to Net as Modem

1. Data cable from Samsung/LG 2. Connect to DUN 3. Insert R Connect CD 4. Choose handset model and cable type 5. Set phone to work as modem by typing *412 and press Call button. 6. Wait for SMS confirmation. 7. Connect PC to Phone with the data cable. 8. Restart the PC as per … Continue reading Connect Reliance Phone to Net as Modem →

Install kppp for ordinary users

Create a group called dialout. Add specific users to the group dialout # chown root.dialout /usr/sbin/kppp # chown root.dialout /usr/bin/consolehelper # chown root.dialout /usr/bin/kppp* # chmod 4750 /usr/sbin/kppp You can now setup by typing /usr/sbin/kppp Set up /usr/sbin/kppp on the KDE panel Note that ordinary users cannot call /usr/bin/kppp as it requires root privileges. Hence … Continue reading Install kppp for ordinary users →

Modems in Linux

Ensure that Wait for Dialtone is deselected.

Kppp aborts with message “Unable to authenticate”

To remove the error, add line “noauth” to /etc/ppp/options. Note that this solution may be obsolete.