network switch

My server has five Ethernet ports and one ADSL port. How do I setup IPv4 software bridge using Debian Linux operating systems so that the rest of five ports act as a network switch?

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I need to do router or network switch configuration via a console port such as COM1 (ttyS0 under Linux). How do I use the screen command for a serial terminal emulator network with different baud rates under UNIX or Linux operating systems?

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Q. Under Linux I can use Ethtool and mii-tool, but they are not available under FreeBSD. How do I tell the port speed of the nic under FreeBSD operating system?

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Q. I’ve only one public IP address assigned by my ISP using metro Ethernet connection. eth0 has public IP and eth1 is connected to our network switch. How do I configure Linux box to forward traffic to my web server hosted at 192.168.1.100 IP address?

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