Debian
無線網路不工作
我只是用Debian 7雙啟動Windows 7，在安裝過程中它說wifi韌體失去所以我在沒有網際網路連接的情況下安裝，安裝後我得到了我的LAN電纜來安裝各種程序但現在我在配置時遇到問題wifi 連接，在 windows 分區上 wifi 工作正常。
所以我做的第一件事就是為我的wifi卡安裝模組，即：
Intel Centrino Advanced-N 6205我通過在 apt-get 上安裝iwlwifi來做到這一點。之後它認出了我的卡，我想，因為我可以掃描網路：
root@debian:/home/user# iwlist wlan0 scan wlan0 Scan completed : Cell 01 - Address: 7A:B6:86:83:0A:08 Channel:1 Frequency:2.412 GHz (Channel 1) Quality=48/70 Signal level=-62 dBm Encryption key:on ESSID:"NETWORK" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s 18 Mb/s; 36 Mb/s; 54 Mb/s Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s Mode:Master Extra:tsf=00000008c098b443 Extra: Last beacon: 2952ms ago IE: Unknown: 00074E4554574F524B IE: Unknown: 010882848B961224486C IE: Unknown: 030101 IE: Unknown: 2A0100 IE: Unknown: 32040C183060 IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00 IE: Unknown: 0B05010045127A IE: Unknown: DD07000C4304000000 IE: Unknown: 0706434120010D10然後我安裝了 iw 以嘗試連接到網路：
root@debian:/home/user# iw dev wlan0 link Connected to 7a:b6:86:83:0a:08 (on wlan0) SSID: NETWORK freq: 2412 RX: 33045 bytes (536 packets) TX: 1232 bytes (17 packets) signal: -59 dBm tx bitrate: 1.0 MBit/s bss flags: short-preamble short-slot-time dtim period: 0 beacon int: 100它說我已連接到路由器，但我仍然無法訪問網際網路。
更多輸出：
如果配置：
root@debian:/home/user# ifconfig eth0 Link encap:Ethernet HWaddr 3c:d9:2b:25:51:cb inet addr:192.168.1.72 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::3ed9:2bff:fe25:51cb/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:101484 errors:0 dropped:0 overruns:0 frame:0 TX packets:59551 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:139315514 (132.8 MiB) TX bytes:5061083 (4.8 MiB) Interrupt:20 Memory:d1500000-d1520000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:343 errors:0 dropped:0 overruns:0 frame:0 TX packets:343 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:30800 (30.0 KiB) TX bytes:30800 (30.0 KiB) wlan0 Link encap:Ethernet HWaddr a0:88:b4:85:f5:cc inet addr:192.168.1.74 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fe80::a288:b4ff:fe85:f5cc/64 Scope:Link UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:297 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:26754 (26.1 KiB)編輯：
root@debian:/home/user# ping 192.168.1.1 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. 64 bytes from 192.168.1.1: icmp_req=1 ttl=64 time=1884 ms 64 bytes from 192.168.1.1: icmp_req=2 ttl=64 time=876 ms 64 bytes from 192.168.1.1: icmp_req=3 ttl=64 time=0.813 ms 64 bytes from 192.168.1.1: icmp_req=4 ttl=64 time=0.814 ms 64 bytes from 192.168.1.1: icmp_req=5 ttl=64 time=0.845 ms 64 bytes from 192.168.1.1: icmp_req=6 ttl=64 time=0.738 ms 64 bytes from 192.168.1.1: icmp_req=7 ttl=64 time=0.737 ms 64 bytes from 192.168.1.1: icmp_req=8 ttl=64 time=0.752 ms 64 bytes from 192.168.1.1: icmp_req=9 ttl=64 time=0.830 ms 64 bytes from 192.168.1.1: icmp_req=10 ttl=64 time=0.762 ms 64 bytes from 192.168.1.1: icmp_req=11 ttl=64 time=0.768 ms 64 bytes from 192.168.1.1: icmp_req=12 ttl=64 time=0.748 ms 64 bytes from 192.168.1.1: icmp_req=13 ttl=64 time=0.784 ms 64 bytes from 192.168.1.1: icmp_req=14 ttl=64 time=0.743 ms ^C --- 192.168.1.1 ping statistics --- 14 packets transmitted, 14 received, 0% packet loss, time 13006ms rtt min/avg/max/mdev = 0.737/197.826/1884.227/518.915 ms, pipe 2 root@debian:/home/user# ping 8.8.8.8 connect: Network is unreachable我還注意到，當我連接到路由器時，我沒有獲得 inet 地址，只有在我輸入 dhclient wlan0 之後：
root@debian:/home/user# dhclient wlan0 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. --- 192.168.1.1 ping statistics --- 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt min/avg/max/mdev = 0.984/0.984/0.984/0.000 ms我確實得到了一個inet地址。但是還是不能上網，而且得到inet地址後ping路由器會報錯：
root@debian:/home/user# ping 192.168.1.1 PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data. From 192.168.1.74 icmp_seq=2 Destination Host Unreachable From 192.168.1.74 icmp_seq=5 Destination Host Unreachable From 192.168.1.74 icmp_seq=8 Destination Host Unreachable From 192.168.1.74 icmp_seq=17 Destination Host Unreachable ^C --- 192.168.1.1 ping statistics --- 20 packets transmitted, 0 received, +4 errors, 100% packet loss, time 19120ms編輯2：
root@debian:/home/user# ip route 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.72 192.168.1.0/24 dev wlan0 proto kernel scope link src 192.168.1.74 root@debian:/home/user# route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 * 255.255.255.0 U 0 0 0 eth0 192.168.1.0 * 255.255.255.0 U 0 0 0 wlan0編輯 3：
目前根本連不上網路：
root@debian:/home/user# ifconfig wlan0 up root@debian:/home/user# iw dev wlan0 connect NETWORK keys 1:password root@debian:/home/user# iw dev wlan0 link Not connected.我仍然可以掃描網路。
您需要為您的網路添加預設路由。這是在沒有更好方法的情況下使用的“包羅萬象”路線。
添加預設路由的命令是：
route add default gw 192.168.1.1或者：
ip route add default via 192.168.1.1以上不會是永久性的。
要使其永久化，請將其添加到網路腳本中
/etc/network/interfaces或使用NetworkManager.