Ung dung tin nhan tuc thoi (IP) va goi dien thoai qua
Internet (VoIP) Skype, tu cho chua co nguoi nao biet den, nay da co khoang 150
trieu nguoi dung voi 6 trieu nguoi thuong truc online chi trong vong 3 nam. Va
khong tranh khoi quy luat thong thuong, Skype bi khong it doi tuong pha hoai
nhom ngo, tim cach tham nhap pha hoai. Mot so van de bao mat xuat hien, nhat la
khi Skype duoc dung trong cac mang doanh nghiep lon.
Trong nhan thuc cua nhieu nguoi, Skype co the la mot lo hong bao mat, cho phep
hacker loi dung de tham nhap he thong. Ho cung cho rang no ma hoa tat ca cac
lien lac nen qua trinh gui tin khong the bi theo doi, hay Skype su dung qua
nhieu bang thong mang va truyen tai cac file nguy hiem.
Skype khong de quan ly. Nhung neu ban lo lang ve Skype dang dung tren mang cua
minh, co nhieu phuong phap giup ban loai bo hoac dam bao rang no an toan. Chung
ta hay cung xem ban co the bao ve mang cua minh va nguoi dung Skype truoc cac
nguy hiem no dem lai nhu the nao.
Tim nguoi dung Skype tren mang
Viec dau tien can phai lam la tim ra ai dang su dung Skype tren mang cua ban.
Neu ban co mot trong cac chuong trinh ung dung quan ly cau hinh mang nhu
Microsoft SMS, LANDesk HP hay OpenView Client Configuration Manager, ban da co
du cong cu trong tay. Hay dung chuc nang dung san ben trong cac ung dung do.
Neu khong co ung dung nao nhu tren, dung lo lang. Ban hay tai mot script mau co
ten Skype_Check for Windows tren website
SkypeTips.com va thuc
hien cac buoc sau:
• Kiem tra xem lieu Skype da duoc cai dat tren cac may
trong mang chua va lap mot bao cao cac he thong co no.
• Ghi lai phien ban cua Skype.
• Kiem tra xem lieu co proxy nao duoc thiet lap cho no hay khong.
• Kiem tra cong Skype dang dung va ghi lai.
• Kiem tra xem lieu cong 80 co duoc phep su dung khong va ghi lai.
• Kiem tra cong dang duoc dung va cho phep ban copy file XML Shared tong hop
voi cac thiet lap chinh xac.
• Kiem tra va ngat truyen tai file, ghi lai.
• Kiem tra va ngat Skype API, ghi lai.
 Ban
co the dung script dang nhap cua minh de tim kiem file chay Skype.exe; hoac dung
mot script va thuc thi no tren luoc do dia chi IP, gan cho tung client voi tai
khoan admin phu hop, tim kiem Skype va bat ky thiet lap XML hay registry nao ton
tai. Va, tat nhien ban cung co the dung mot ung dung quan ly cau hinh nhu da de
cap den o tren, hoac dung ket hop ca script voi ung dung quan ly cau hinh, tuy
thuoc xem ban can gi, ghi lai, quan ly, ngan chan hay xoa Skype.
Loai bo Skype
Neu ban quyet dinh cam Skype luu hanh tren mang cua minh, ban co the thuc hien
theo mot so cach. Don gian nhat la “lung suc” va xoa moi ban sao cua Skype tren
tung may trong mang. Ban se can mot cong cu GUI de tim kiem va pha huy Skype.
Tien ich mien phi co ten SkypeKiller cho phep ban duyet mang, ghi lai danh sach
cac may dung Skype va sau do xoa chung tu cac may do.
SkypeKiller cung cho
phep ban sap xep chuong trinh xoa. Voi cac may hien tai khong online, no se thuc
hien cong viec cua minh tu dong o lan sau, khi cac may do vao mang.
Ban muon chac chan rang nguoi dung khong the download va cai dat Skype, hay su
dung cong cu quan ly mang de loai bo truy cap mang toi website
www.skype.com. Van chua du,
boi vi nguoi dung luon co the lay duoc phan mem nay o bat ky dau. Hay ngan chan
Skype cai dat tren he thong bang cac tuy chon Group Policy Active Directory hoac
loai bo dac quyen quan tri nguoi dung. Ban cung co the dung ung dung quan ly cau
hinh de loai bo Skype va ghi lai khi Skype duoc tim thay trong qua trinh ra soat
liet ke.
Ngoai ra, ban co the chay chuong trinh kiem tra khi nguoi dung dang nhap hoac su
dung cac script de tim kiem va xoa Skype. Ban co the download va su dung script
Skype_Delete for Windows tren website Web site.
Nguoi dung tu xa la thach thuc lon nhat doi voi cac quan tri vien, vi ho khong
ket noi toi mang cuc bo theo nguyen tac thong thuong. Vay, quan ly nguoi dung tu
xa hay xoa Skype tren may cua ho nhu the nao?
Neu ban co mot ung dung quan ly cau hinh, hay dung no voi tac nhan “dien thoai
gia dinh” khi may tinh duoc ket noi voi mang rieng ao (VPN). Sau do su dung cac
chuc nang VPN quarantine (cach ly).
Co the ban muon cho sau khi nguoi dung dang nhap vao mang cuc bo moi su dung mot
script login de “tom co” ho. Nhung co nhieu nguoi dung su dung laptop, va hiem
khi ket noi vao mang cuc bo. Muon giai quyet van de nay, ban co the them Skype
vao chinh sach dang nhap mang rieng ao de xac dinh xem lieu Skype co duoc dung
hay khong. Sau do xoa chung khi nguoi dung dang nhap vao mang VPN trong qua
trinh kiem tra tuong lua ca nhan va phan mem anti-virus cua ho.
Loai bo Skype voi Windows XP firewall (Service Pack 2)
Neu ban dang dung Windows XP Service Pack 2 va Windows firewall, co mot tien ich
Microsoft cung cap de dieu khien tuong lua goi la netsh. Ban co the su dung lenh
nesh de loai bo Skype tu danh sach ung dung duoc cung cap, hoac thay doi quy tac
de Skype su dung mot dia chi IP gia. Thuc hien nhu sau:
netsh firewall set allowedprogram C:\progra~1\Skype\phone\skype.exe
Skype disable
netsh firewall set allowedprogram C:\progra~1\Skype\phone\skype.exe Skype
enable custom 10.1.2.3
Loai bo Skype o tang mang
Den bay gio, chung ta moi thao luan ve loai bo hay xoa Skype tren lop client.
Nhung thuc te doi hoi nhieu giai phap tong hop hon cho cac tap doan va cong ty
lon can do bao mat cao. Mot trong so do la ung dung loai bo IM va Skype lop mang.
Cac ung dung phan cung nay duoc cau hinh de nhan dien giao thuc cu the dung cho
cac chuong trinh nhu Skype, sau do loai bo luu luong mang cua chung. Nhung phan
mem nhu vay kha dat tien, do do khong phu hop cho cac doanh nghiep nho. Mot so
trong do la Verso, Ipoque, Lynanda, SonicWall, Packeteer…
Neu ban dang dung mot proxy server nhu Squid cho tat ca cac truy cap Web, ban co
the cau hinh proxy nay de loai bo cac yeu cau lien quan den Skype va IM. Chi can
tim tren Google voi tu khoa “Skype AND Squid”, ban se co hang loat thong tin ve
no.
Quan ly cac thiet lap Skype
Chuyen gi se xay ra neu ban quyet dinh cho phep nguoi dung su dung Skype, nhung
muon quan ly cac thiet lap tren tat ca PC trong mang? Ban co the dung Active
Directory Group Policy hoac mot ung dung quan ly cau hinh hay cac script nhu mot
so vi du mau toi da noi o tren. Ban co the dieu khien hoat dong cua Skype nhu
ngan chan he thong tro thanh sieu nut (Supernode), ngat bo qua trinh truyen tai
file, dieu khien cong nao va giao thuc nao Skype duoc dung va mot so thiet lap
khac. Neu muon co danh sach hoan chinh cac thiet lap tren Skype, ban co the xem
tai
Skype's Guide for Network Admins.
Cuoi cung, neu ban muon giam sat Skype tren cac he thong nguoi dung, su dung
script dang nhap Windows de chay chuong trinh kiem tra khi nguoi dung dang nhap
he thong, hoac chay “Run Key” tren laptop va ghi lai nhung gi ban dang tim kiem.
(Theo ComputerWorld)
Article source http://w4rum.com/603.t
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