Red Hat Linux 7.2 Bible, Unlimited ed phần 10

Lưu ý Một điều bạn có thể cần phải làm là chạy lệnh makehistory để tạo ra một tập tin . Điều này khởi tạo cơ sở dữ liệu lịch sử INN. Giàu Salz tạo ra các gói phần mềm INN. Trong những năm gần đây, sự phát triển của nó đã được thực hiện trên của Hiệp hội phần mềm Internet ( / sản phẩm / INN). | Troubleshooting a Wireless LAN If you set up your two or more wireless LAN cards for Red Hat Linux systems to communicate together and they are not communicating you can troubleshoot the problem in several different ways. Check wireless settings You can use the iwlist and iwconfig commands to check your wireless settings. The iwconfig command can give you a quick overview of your wireless settings while the iwlist command shows you information about specific parameters you are interested in. Use the iwconfig command along with the name of the wireless LAN interface to see information about that interface. For example if the wireless interface were eth0 you could type the following iwconfig eth0 eth0 IEEE ESSID Homelan Nickname pine Mode Ad-Hoc Frequency Cell 02 02 2D 2D 3B 30 Bit Rate 11Mb s Tx-Power 15 dBm Sensitivity 1 3 RTS thr off Fragment thr off Encryption key 7365-6375-31 Power Management off Link Quality 0 92 Signal level -102 dBm Noise level -102 dBm Rx invalid nwid 0 invalid crypt 0 invalid misc 0 With iwconfig you can see details about the wireless aspects of the Ethernet interface. In this example the network name ESSID is Homelan and the station name Nickname is pine. The interface is operating in Ad-Hoc mode on channel 1 frequency of . Transmission rates are at the maximum speed of 11 Mbps. The encryption key that must be used by every node the card connects with is 7365-6375-31. Other settings describe the link and signal quality. The iwlist command lets you request specific information about the wireless LAN interface. The syntax is to follow the iwlist command with the interface name and the information you are interested in. For example iwlist eth0 freq eth 0 14 channels in total available frequencies Channel 01 GHz Channel 02 GHz Channel 03 GHz Channel 04 GHz Channel 05 GHz Channel 06 GHz Channel 07 GHz Channel 08 GHz Channel 09 GHz Channel 10 GHz Channel 11 .