Создать локальную сеть WiFi

# lspci | grep -i wireless
# lspci | grep -i network
03:00.0 Network controller: Ralink corp. Device 3290

# ls /lib/firmware/
av7110         cis     hp    keyspan_pda          usbdux_firmware.bin
carl9170-1.fw  dsp56k  isci  usbduxfast_firmware.bin  usbduxsigma_firmware.bin

# ifconfig -a
eth0      Link encap:Ethernet  HWaddr e0:3f:49:c7:83:7a  
          inet addr:192.168.7.88  Bcast:192.168.7.255  Mask:255.255.255.0
          inet6 addr: fe80::e23f:49ff:fec7:837a/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:194131 errors:0 dropped:0 overruns:0 frame:0
          TX packets:58651 errors:0 dropped:0 overruns:0 carrier:5
          collisions:0 txqueuelen:1000 
          RX bytes:59828298 (57.0 MiB)  TX bytes:8468293 (8.0 MiB)
          Interrupt:19 
 
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:1537 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1537 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:98038 (95.7 KiB)  TX bytes:98038 (95.7 KiB)
 
ra0       Link encap:Ethernet  HWaddr 54:35:30:22:50:1f  
          inet addr:10.0.0.1  Bcast:10.0.0.7  Mask:255.255.255.248
          inet6 addr: fe80::5635:30ff:fe22:501f/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:144196 errors:0 dropped:0 overruns:0 frame:0
          TX packets:84 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:38822948 (37.0 MiB)  TX bytes:0 (0.0 B)
          Interrupt:17

# iwconfig
lo        no wireless extensions.
 
ra0       Ralink STA  ESSID:""  Nickname:"RT3290STA"
          Mode:Auto  Frequency=2.412 GHz  Access Point: Not-Associated   
          Bit Rate:1 Mb/s   
          RTS thr:off   Fragment thr:off
          Encryption key:off
          Link Quality=10/100  Signal level:0 dBm  Noise level:0 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
 
eth0      no wireless extensions.

# cat /etc/network/interfaces
 
# The loopback network interface
auto lo
iface lo inet loopback
 
#auto eth0
#iface eth0 inet dhcp
 
# это я добавил
auto ra0
iface ra0 inet static
  address 10.0.0.1
  netmask 255.255.255.248
  #madwifi не установлен
  #madwifi-base ra0
  #madwifi-mode master

# cat /etc/dhcp/dhcpd.conf 
#
# Sample configuration file for ISC dhcpd for Debian
#
#
 
# The ddns-updates-style parameter controls whether or not the server will
# attempt to do a DNS update when a lease is confirmed. We default to the
# behavior of the version 2 packages ('none', since DHCP v2 didn't
# have support for DDNS.)
ddns-update-style none;
 
# option definitions common to all supported networks...
#option domain-name "InternalNetwork";
option domain-name-servers 192.168.7.2;
 
default-lease-time 3600;
max-lease-time 84600;
 
# If this DHCP server is the official DHCP server for the local
# network, the authoritative directive should be uncommented.
authoritative;
 
# Use this to send dhcp log messages to a different log file (you also
# have to hack syslog.conf to complete the redirection).
log-facility local7;
 
# MIGHT BE COMMENTED
deny bootp;
 
# No service will be given on this subnet, but declaring it helps the 
# DHCP server to understand the network topology.
 
#subnet 10.152.187.0 netmask 255.255.255.0 {
#}
 
# This is a very basic subnet declaration.
 
#subnet 10.254.239.0 netmask 255.255.255.224 {
#  range 10.254.239.10 10.254.239.20;
#  option routers rtr-239-0-1.example.org, rtr-239-0-2.example.org;
#}
 
# This declaration allows BOOTP clients to get dynamic addresses,
# which we don't really recommend.
 
subnet 10.0.0.0 netmask 255.255.255.248 {
  range 10.0.0.2 10.0.0.6;
  option routers 10.0.0.1;
  option subnet-mask 255.255.255.248;
 }
 
# A slightly different configuration for an internal subnet.
#subnet 10.5.5.0 netmask 255.255.255.224 {
#  range 10.5.5.26 10.5.5.30;
#  option domain-name-servers ns1.internal.example.org;
#  option domain-name "internal.example.org";
#  option routers 10.5.5.1;
#  option broadcast-address 10.5.5.31;
#  default-lease-time 600;
#  max-lease-time 7200;
#}
 
# Hosts which require special configuration options can be listed in
# host statements.   If no address is specified, the address will be
# allocated dynamically (if possible), but the host-specific information
# will still come from the host declaration.
 
#host passacaglia {
#  hardware ethernet 0:0:c0:5d:bd:95;
#  filename "vmunix.passacaglia";
#  server-name "toccata.fugue.com";
#}
 
# Fixed IP addresses can also be specified for hosts.   These addresses
# should not also be listed as being available for dynamic assignment.
# Hosts for which fixed IP addresses have been specified can boot using
# BOOTP or DHCP.   Hosts for which no fixed address is specified can only
# be booted with DHCP, unless there is an address range on the subnet
# to which a BOOTP client is connected which has the dynamic-bootp flag
# set.
#host fantasia {
#  hardware ethernet 08:00:07:26:c0:a5;
#  fixed-address fantasia.fugue.com;
#}
 
# You can declare a class of clients and then do address allocation
# based on that.   The example below shows a case where all clients
# in a certain class get addresses on the 10.17.224/24 subnet, and all
# other clients get addresses on the 10.0.29/24 subnet.
 
#class "foo" {
#  match if substring (option vendor-class-identifier, 0, 4) = "SUNW";
#}
 
#shared-network 224-29 {
#  subnet 10.17.224.0 netmask 255.255.255.0 {
#    option routers rtr-224.example.org;
#  }
#  subnet 10.0.29.0 netmask 255.255.255.0 {
#    option routers rtr-29.example.org;
#  }
#  pool {
#    allow members of "foo";
#    range 10.17.224.10 10.17.224.250;
#  }
#  pool {
#    deny members of "foo";
#    range 10.0.29.10 10.0.29.230;
#  }
#}

interface=ra0
driver=nl80211
logger_syslog=-1
logger_syslog_level=1
logger_stdout=-1
logger_stdout_level=1
# debug=0
dump_file=/tmp/hostapd.dump
ctrl_interface=/var/run/hostapd
ctrl_interface_group=0
ssid=DotA
country_code=RU
#ieee80211h=0
hw_mode=g
# beacon_int=100
# dtim_period=2
max_num_sta=255
# rts_threshold=2347
# fragm_threshold=2346
auth_algs=1
# ignore_broadcast_ssid=0
eap_server=0
# wpa=2
# wpa_passphrase=02042015  # <-- Тут впишите свой пароль
# wpa_key_mgmt=WPA-PSK
# wpa_pairwise=CCMP
own_ip_addr=10.0.0.1