Setup Wireless/Securit
Setup Wireless/Securit:
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1. Login to Wireless router (linksys)
- Open browser: 192.168.1.1
- Username: admin
- Password: admin
- SSID: Wireless Name (ITS-Computer)
- Enable SSID Broadcast: show wireless name
- Click SaVE
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802.11 : Wifi standard
Wireless B: 11Mbps
Wireless G: 54Mbps
Wireless N: 100-300Mbps
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Wireless:
WPAN: bluetooth, infra =>
WLAN: Wifi => access point
WWAN: GSM, Edge, 3G, 4G => Microwave
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2. Setup Security:
WPA2/PSK
WPA: to encrypt wireless signal
PSK: to authenticate wireless client using key
send signal: yahoo.com => %$%^$^$^%$^ (WPA)
3. Filter MAC Address (Wireless client)
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- Mac adress = Hardware address = phisical address = Network card address
- IP address = software address = logical address
MAC = C8-3A-35-D1-7E-F1
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Wireless Security:
- PSK: wireless password
- WPA: wireless encryption
- MAC Filter
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- Firewall: software & hardwae
Firewall Software:
- ISA Server: Run on Windows 2003
- IPCop: Linux-base
- Smoothwall
- MicroTec...
Harware Firewall:
- Cisco ASA, PIX => Router
- Watchguard => Router
- LinkSys, Dlink => Router
ADSL Router:
- Router
- Modem
- Switch
- Wifi
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Internet Traffic:
- Incoming traffic: Download
- Outgoing traffic : Upload
- Send email: outgoing traffic
- open yahoo.com: in + out
- download software: in
- upload website to hosting: out
- User on internet remote VPN to local Office: inoming
- user on internet open webmail of local mail server: incoming
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- Network 4 category:
- localhost: local computer: 127.0.0.1
- Internal: LAN: local network
- External: WAN: Internet
- VPN: Extranet: local network stay on internet
2000-2003
- Modem: converter line to network sinal
- Router: NAT (map internal & external to same network)
- Switch: Share internet
2005: Router: 3-1