Centos connection WIFI

Centos connection WIFI

(1) iw dev view wireless NICs [root @ localhost desktop] # iw devphy #0 Interface wlp4s0 ifindex 3 wdev 0x1 addr 1c: 4b: d6: 91: 83: 0a type managed (2) ip link set *** up enable wireless network adapter [root @ localhost desktop] # ip link set wlp4s0 up (3) ip link show *** displays the basic information of the wireless network adapter [root @ localhost desktop] # ip link show wlp4s03: wlp4s0: <NO-CARRIER, BROADCAST, MULTICAST, UP> mtu 1500 qdisc mq state DOWN mode DEFAULT qlen 1000 link/ether 1c: 4b: d6: 91: 83: 0a brd ff: ff (4) iw *** link displays wireless network adapter connection status [root @ localhost desktop] # iw wlp4s0 linkNot connected. (5) iw *** scan | grep SSID view wireless network SSID in the current Lan [root @ localhost desktop] # iw wlp4s0 scan | grep SSID: TP-LINK_AA SSID: TP-202 SSID: TP-LINK_Allen SSID: Tenda_zzzz SSID: \ xba \ xa3 \ xd4 \ xf4 \ xcd \ xf5 \ xc2 \ xb7 \ xb7 \ xc9 SSID: WIFI123 SSID: MERCURY_435C SSID: xiaoniu SSID: Tenda SSID: xxxxx (6) wpa_supplicant-B-I ***-c <(wpa_passphrase "SSID_XXX" "PWD_XXX") connects to the wireless network, and the wifi SSID that SSID_XXX needs to connect, PWD_XXX wifi password [root @ localhost desktop] # wpa_supplicant-B-I wlp4s0-c <(wpa_passphrase "alias" 78787878 ") Successfully initialized wpa_supplicant (7) dhclient allocates IP addresses [root @ localhost desktop] # dhclient wlp4s0 [root @ localhost desktop] # ip addr show wlp4s03: wlp4s0: <BROADCAST, MULTICAST, UP, LOWER_UP> mtu 1500 qdisc mq state UP qlen 1000 link/ether 1c: 4b: d6: 91: 83: 0a brd ff: ff inet 192.168.1.105/24 brd 192.168.1.255 scope global dynamic fill valid_lft 172788sec limit 172788sec inet6 fe80: 1e4b: d6ff: fe91: 830a/64 scope link limit forever connection successful test: [root @ localhost desktop] # ping baidu. comPING baidu.com (220.181.57.217) 56 (84) bytes of data.64 bytes from 220.181.57.217: icmp_seq = 1 ttl = 51 time = 61.0 ms64 bytes from 220.181.57.217: icmp_seq = 2 ttl = 51 time = 43.3 ms ^ C64 bytes from 220.181.57.217: icmp_seq = 3 ttl = 51 time = 42.5 ms --- baidu.com ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2000 msrtt min/avg/max/mdev = 42.596/48.981/61.035/8.528 MS