11-08-2008
network question
Hi here is my question;
any help would be appreciated
The Linux system pokey has two Ethernet cards. The first Ethernet card is connected to a companywide
TCP/IP network covering the addresses 87.65.43.xx, where pokey's address is
87.65.43.21. The second Ethernet interface is connected to a smaller local network covering the
addresses 192.168.1.x. The machine named skeptopotamus, with the address
87.65.43.1, can route traffic from pokey to the rest of the Internet. What does pokey's routing
table look like (show destination addresses/masks, interfaces and other information where needed).
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ethers(4) Kernel Interfaces Manual ethers(4)
NAME
ethers - Database that maps Ethernet addresses to hostnames
DESCRIPTION
The /etc/ethers file is used in conjunction with the reverse address resolution protocol daemon (rarpd) to map Ethernet addresses to host-
names. It contains information about the known (48-bit) Ethernet addresses of hosts on the Internet.
For each host on an Ethernet, a single line should be present in the file with the following information:
Ethernet-address official-host-name
Items are separated by one or more spaces or tabs. A number sign (#) indicates the beginning of a comment that extends to the end of line.
The standard form for Ethernet addresses is:
x:x:x:x:x:x
The x is a hexadecimal number between 0 and ff, representing 1 byte. The address bytes are always in network order.
Hostnames can contain any printable character other than a space, tab, newline, or number sign (#).
Hostnames in the /etc/ethers file should correspond to the hostnames in the /etc/hosts file or to those provided by the name service.
EXAMPLES
The following is a sample ethers file:
08:00:20:01:e5:1c host1 # Comments go here 08:00:20:01:d0:4c host2 # Comments go here 08:00:20:01:e0:1d
host3 # Comments go here 08:00:20:00:c2:4e host4 # Comments go here
RELATED INFORMATION
Commands: rarpd(8)
Files: hosts(4), packetfilter(7)
Routines: ethers(3) delim off
ethers(4)