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howtos:network_services:configuring_a_wireless_access_point [2012/11/18 22:19 (UTC)] – [IP_forwarding and routing] populated markushhowtos:network_services:configuring_a_wireless_access_point [2012/12/23 10:50 (UTC)] (current) – markush
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 <note>Work in Progress</note> <note>Work in Progress</note>
  
-This Howto explains how you can share your internet-connection via the wireless NIC of your computer (Wlan Access Point).+This Howto explains how you can use your computer as a Wireless Accesspoint. \\ 
 +This means if the computer has an Internet connection and a wireless interface, other computers can use it's internet connection via wlan. \\ 
 +This is a very limited setup, it can be expanded with DHCP, DNS and a firewall, but this subjects can be found in other Howtos here at SlackDocs.
  
 ===== Requirements ===== ===== Requirements =====
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 ===== Configuring hostapd ===== ===== Configuring hostapd =====
  
 +The configuration of hostapd is done in the file /etc/hostapd/hostapd.conf, here an example
 +<code>
 +# the wireless interface 
 +interface=wlan0
 +# the driver -- there are other settings possible, but very likely the following works 
 +driver=nl80211
 +logger_syslog=-1
 +logger_syslog_level=2
 +logger_stdout=-1
 +logger_stdout_level=2
 +dump_file=/tmp/hostapd.dump
 +ctrl_interface=/var/run/hostapd
 +ctrl_interface_group=0
 +# The SSID -- i.e. the name of the wireless network (which will be shown when you scan for available networks)
 +ssid=yourwlannamehere
 +country_code=DE
 +# check the manpage for hostapd and your hardware for the mode
 +hw_mode=g
 +channel=7
 +beacon_int=100
 +dtim_period=2
 +max_num_sta=255
 +rts_threshold=2347
 +fragm_threshold=2346
 +macaddr_acl=0
 +auth_algs=3
 +ignore_broadcast_ssid=0
 +eapol_key_index_workaround=0
 +eap_server=0
 +own_ip_addr=127.0.0.1
 +wpa=1
 +# The WPA2 key 
 +wpa_passphrase=your very secret passphrase here
 +# the next settings refer to the settings in the clients wpa_supplicant.conf
 +wpa_key_mgmt=WPA-PSK
 +wpa_pairwise=TKIP 
 +rsn_pairwise=CCMP
 +</code>Be sure to read the manpage for hostapd
 ===== Configuring the client ===== ===== Configuring the client =====
  
 In this Howto I'll only describe a minimal setup with a static IP-configuration.  In this Howto I'll only describe a minimal setup with a static IP-configuration. 
 +<code>ip-adress: 192.168.45.10
 +subnetmask: 255.255.255.0
 +gateway: 192.168.45.1</code>
 +Since we have (in this minimal configuration) no DNS-server running in our network, you'll have to configure your client with the same DNS-server that your Accesspoint is using (look at /etc/resolv.conf).
 ===== IP_forwarding and routing ===== ===== IP_forwarding and routing =====
  
 === Enable IP forwarding === === Enable IP forwarding ===
  
-<code>echo "1" > /proc/sys/net/ipv4/ip_forwarding</code>+<code>echo "1" > /proc/sys/net/ipv4/ip_forward</code>
  
 === Internet Connection Sharing === === Internet Connection Sharing ===
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 <code>iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE</code> <code>iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE</code>
 In this case eth0 is the interface which is connected to the internet. If your computer has a connection via ppp you shouls use ppp0 instead of eth0. In this case eth0 is the interface which is connected to the internet. If your computer has a connection via ppp you shouls use ppp0 instead of eth0.
 +
 +===== Starting the Accesspoint =====
 +
 +<code>ifconfig wlan0 192.168.45.1 up
 +/etc/rc.d/rc.hostapd start</code>
 +The first line starts wlan0 with IP-adress 192.168.45.1, the second line starts the daemon.
  
  
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-<!-- * Originally written by [[wiki:user:xxx | User X]] -->+* Originally written by [[wiki:user|Markus Hutmacher]]
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 + 
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-{{tag>howtos template}}+{{tag>howtos wifi, accesspoint, routing, iptables}}

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