Então você quer fazer um repetidor de Wi-Fi?
Supondo que você tenha o driver necessário para o seu dongle EW-7811Un ; se não tentar usar o PPA em ppa:hanipouspilot/rtlwifi e o pacote rtl8192cu-dkms .
TL; DR
Se você não consegue ler tudo e quer ser spoon feed , execute este script , feche os olhos e cruze os dedos.
Como fazer isso
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Você precisa de
hostapd, mas uma versão especialmente criada por causa do driver subpartek. Você precisará desinstalar a versão do Ubuntu (se estiver instalada) e instalar uma versão corrigida.Você pode fazer o download do arquivo original em realtek.com.tw (mas eu uso aqui o mesmo arquivo de um repositório de usuários do github):
sudo apt-get remove hostapd cd /tmp wget https://github.com/XiaoxiaoPu/hostapd-8192cu/raw/master/RTL8188C_8192C_USB_linux_v4.0.2_9000.20130911.zip unzip RTL8188C_8192C_USB_linux_v4.0.2_9000.20130911.zip cd RTL8188C_8192C_USB_linux_v4.0.2_9000.20130911 cd wpa_supplicant_hostapd tar -zxf wpa_supplicant_hostapd-0.8_rtw_r7475.20130812.tar.gz cd wpa_supplicant_hostapd-0.8_rtw_r7475.20130812 cd hostapdVocê pode (deve?) usar este arquivo e salvá-lo como
.config# Example hostapd build time configuration # # This file lists the configuration options that are used when building the # hostapd binary. All lines starting with # are ignored. Configuration option # lines must be commented out complete, if they are not to be included, i.e., # just setting VARIABLE=n is not disabling that variable. # # This file is included in Makefile, so variables like CFLAGS and LIBS can also # be modified from here. In most cass, these lines should use += in order not # to override previous values of the variables. # Driver interface for Host AP driver #CONFIG_DRIVER_HOSTAP=y CONFIG_DRIVER_RTW=y # Driver interface for wired authenticator #CONFIG_DRIVER_WIRED=y # Driver interface for madwifi driver #CONFIG_DRIVER_MADWIFI=y #CFLAGS += -I../../madwifi # change to the madwifi source directory # Driver interface for drivers using the nl80211 kernel interface #CONFIG_DRIVER_NL80211=y # Driver interface for FreeBSD net80211 layer (e.g., Atheros driver) #CONFIG_DRIVER_BSD=y #CONFIG_SUPPORT_RTW_DRIVER=y #CFLAGS += -I/usr/local/include #LIBS += -L/usr/local/lib #LIBS_p += -L/usr/local/lib #LIBS_c += -L/usr/local/lib # Driver interface for no driver (e.g., RADIUS server only) #CONFIG_DRIVER_NONE=y # IEEE 802.11F/IAPP #CONFIG_IAPP=y # WPA2/IEEE 802.11i RSN pre-authentication CONFIG_RSN_PREAUTH=y # PeerKey handshake for Station to Station Link (IEEE 802.11e DLS) CONFIG_PEERKEY=y # IEEE 802.11w (management frame protection) # This version is an experimental implementation based on IEEE 802.11w/D1.0 # draft and is subject to change since the standard has not yet been finalized. # Driver support is also needed for IEEE 802.11w. #CONFIG_IEEE80211W=y # Integrated EAP server CONFIG_EAP=y # EAP-MD5 for the integrated EAP server CONFIG_EAP_MD5=y # EAP-TLS for the integrated EAP server CONFIG_EAP_TLS=y # EAP-MSCHAPv2 for the integrated EAP server CONFIG_EAP_MSCHAPV2=y # EAP-PEAP for the integrated EAP server CONFIG_EAP_PEAP=y # EAP-GTC for the integrated EAP server CONFIG_EAP_GTC=y # EAP-TTLS for the integrated EAP server CONFIG_EAP_TTLS=y # EAP-SIM for the integrated EAP server CONFIG_EAP_SIM=y # EAP-AKA for the integrated EAP server CONFIG_EAP_AKA=y # EAP-AKA' for the integrated EAP server # This requires CONFIG_EAP_AKA to be enabled, too. #CONFIG_EAP_AKA_PRIME=y # EAP-PAX for the integrated EAP server #CONFIG_EAP_PAX=y # EAP-PSK for the integrated EAP server (this is _not_ needed for WPA-PSK) CONFIG_EAP_PSK=y # EAP-SAKE for the integrated EAP server CONFIG_EAP_SAKE=y # EAP-GPSK for the integrated EAP server CONFIG_EAP_GPSK=y # Include support for optional SHA256 cipher suite in EAP-GPSK CONFIG_EAP_GPSK_SHA256=y # EAP-FAST for the integrated EAP server # Note: Default OpenSSL package does not include support for all the # functionality needed for EAP-FAST. If EAP-FAST is enabled with OpenSSL, # the OpenSSL library must be patched (openssl-0.9.9-session-ticket.patch) # to add the needed functions. #CONFIG_EAP_FAST=y # Wi-Fi Protected Setup (WPS) CONFIG_WPS=y # Enable WSC 2.0 support #CONFIG_WPS2=y # Enable UPnP support for external WPS Registrars #CONFIG_WPS_UPNP=y CONFIG_TLS=internal CONFIG_INTERNAL_LIBTOMMATH=y # EAP-IKEv2 #CONFIG_EAP_IKEV2=y # Trusted Network Connect (EAP-TNC) #CONFIG_EAP_TNC=y # PKCS#12 (PFX) support (used to read private key and certificate file from # a file that usually has extension .p12 or .pfx) #CONFIG_PKCS12=y # RADIUS authentication server. This provides access to the integrated EAP # server from external hosts using RADIUS. CONFIG_RADIUS_SERVER=y # Build IPv6 support for RADIUS operations CONFIG_IPV6=y # IEEE Std 802.11r-2008 (Fast BSS Transition) CONFIG_IEEE80211R=y # Use the hostapd's IEEE 802.11 authentication (ACL), but without # the IEEE 802.11 Management capability (e.g., madwifi or FreeBSD/net80211) #CONFIG_DRIVER_RADIUS_ACL=y # IEEE 802.11n (High Throughput) support CONFIG_IEEE80211N=y # Remove debugging code that is printing out debug messages to stdout. # This can be used to reduce the size of the hostapd considerably if debugging # code is not needed. #CONFIG_NO_STDOUT_DEBUG=y # Add support for writing debug log to a file: -f /tmp/hostapd.log # Disabled by default. #CONFIG_DEBUG_FILE=y # Remove support for RADIUS accounting #CONFIG_NO_ACCOUNTING=y # Remove support for RADIUS #CONFIG_NO_RADIUS=y # Remove support for VLANs #CONFIG_NO_VLAN=y # Enable support for fully dynamic VLANs. This enables hostapd to # automatically create bridge and VLAN interfaces if necessary. #CONFIG_FULL_DYNAMIC_VLAN=y # Remove support for dumping state into a file on SIGUSR1 signal # This can be used to reduce binary size at the cost of disabling a debugging # option. #CONFIG_NO_DUMP_STATE=y # Enable tracing code for developer debugging # This tracks use of memory allocations and other registrations and reports # incorrect use with a backtrace of call (or allocation) location. #CONFIG_WPA_TRACE=y # For BSD, comment out these. #LIBS += -lexecinfo #LIBS_p += -lexecinfo #LIBS_c += -lexecinfo # Use libbfd to get more details for developer debugging # This enables use of libbfd to get more detailed symbols for the backtraces # generated by CONFIG_WPA_TRACE=y. #CONFIG_WPA_TRACE_BFD=y # For BSD, comment out these. #LIBS += -lbfd -liberty -lz #LIBS_p += -lbfd -liberty -lz #LIBS_c += -lbfd -liberty -lz # hostapd depends on strong random number generation being available from the # operating system. os_get_random() function is used to fetch random data when # needed, e.g., for key generation. On Linux and BSD systems, this works by # reading /dev/urandom. It should be noted that the OS entropy pool needs to be # properly initialized before hostapd is started. This is important especially # on embedded devices that do not have a hardware random number generator and # may by default start up with minimal entropy available for random number # generation. # # As a safety net, hostapd is by default trying to internally collect # additional entropy for generating random data to mix in with the data # fetched from the OS. This by itself is not considered to be very strong, but # it may help in cases where the system pool is not initialized properly. # However, it is very strongly recommended that the system pool is initialized # with enough entropy either by using hardware assisted random number # generatior or by storing state over device reboots. # # If the os_get_random() is known to provide strong ramdom data (e.g., on # Linux/BSD, the board in question is known to have reliable source of random # data from /dev/urandom), the internal hostapd random pool can be disabled. # This will save some in binary size and CPU use. However, this should only be # considered for builds that are known to be used on devices that meet the # requirements described above. #CONFIG_NO_RANDOM_POOL=yEntão
make sudo make install -
Pode-se usar
create_ap, que é um pequeno script auxiliar para configurar o AP Wi-Fi. Ele cuida da configuração do hostapd, iptables, se necessário (ao usar o NAT). É uma substituição para o antigo ap-hostspot.cd /tmp git clone [email protected]:oblique/create_ap.git sudo cp create_ap/create_ap /usr/local/bin/create_ap sudo apt-get install dnsmasq-base iptables # if you don't have them already -
Você cria o ponto de acesso com
create_apsudo create_ap -w 2 -c 6 --driver rtl871xdrv wlan1 wlan0 MyHotspot mysecretpasswordVocê precisa usar o método padrão (NAT) porque não é possível conectar duas interfaces wi-fi.
Supondo que o dongle USB é wlan1 e o cartão interno wlan0. Use um canal diferente (pelo menos com um intervalo de +/- 3 canais) que o canal que wlan0 usa.
Feito! Você deve ter sua configuração de PA e o cliente deve acessar a rede através do seu cartão Wi-Fi embutido.
De várias fontes, mas principalmente usando scripts do pacote hostapd-8192cu AUR
Desinstalação
sudo rm /usr/local/bin/hostapd /usr/local/bin/hostapd_cli /usr/local/bin/create_ap