 1. Firewall la gi?
Firewall la mot cong cu phan cung hoac phan mem giup ban tranh duoc su tan cong cua cac hacker, sau may tinh, virus... khi truy cap vao mang Internet. Neu ban su dung may tinh ca nhan tai nha hoac ban la mot doanh nghiep nho, thi su dung firewall la cach quan trong va hieu qua nhat de bao ve may tinh cua ban.
2. Tai sao nguoi su dung may tinh lai can den firewall?
- Neu khong co firewall, khi truy cap vao Internet, cac hacker se de dang dot nhap va an cap thong tin ca nhan cua ban. Chung co the cai dat nhung mat ma pha huy cac file hoac gay ra su co cho may tinh. Chung cung co the su dung may tinh cua ban de lan truyen virus ra cac may khac trong cung he thong. Su dung firewall se giup ban tranh duoc nhung phien toai tren, du ban truy cap Internet bang phuong phap nao - qua modem, cap, hoac thue bao ky thuat so (DSL hoac ADSL).
3. Neu da co san chuong trinh firewall trong may, toi phai khoi dong nhu the nao?
- Neu ban su dung Windows Vista hay Windows XP, trong may da cai dat san chuong trinh Sevirce Pack 2 (SP2):
+ Click Start, sau do click Control Panel
+ Vao phan Security Center, kich hoat Windows Firewall
- Neu he Windows XP cua ban chua cai dat san SP2, ban co the download chuong trinh nay tai dia chi www.microsoftupdate.com.
- Neu ban su dung 1 he Window khac nhu Win2000, Win 98..., ban nen mua phan mem hoac phan cung firewall o ngoai va cai vao may tinh.
- Neu ban chua chac chan la may tinh cua minh da co firewall hay chua, ban co the vao Folder All Program de kiem tra. Click Start, sau do vao All Program, tim xem chuong trinh firewall da duoc cai dat hay chua. Cac phan mem firewall thuong co nhung ten goi nhu McAfee, Symantec, Tiny Personal Firewall...
4. He dieu hanh Window cua toi khong co san chuong trinh firewall. Toi nen lam gi?
- Nhung he dieu hanh Window cu nhu Win 2000, Win Millennium Edition (Me), Win 98 deu khong cai dat san chuong trinh firewall. Neu muon su dung chuong trinh nay, ban co the mua ngoai de cai dat vao may.
5. Windows Firewall co nhung tac dung gi?
- Windows Firewall co tac dung bao ve cac chuong trinh va thong tin tren may tinh ca nhan khoi su xam nhap tu ben ngoai, dac biet la khi nguoi su dung truy cap Internet. Firewall theo doi tat ca nhung thong tin xuat phat tu may tinh cua ban va tu dong bao ve chung khoi virus.
Khi can thiet, chuong trinh firewall se mo nhung cua so bao ve va cho phep may tinh cua ban nhan cac thong tin theo yeu cau, vi du nhu mot trang web ma ban da kich vao address. Con nhung thong tin tu dong gui den may tinh khong theo yeu cau se bi firewall chan lai.
6. Ngoai firewall, con can phai co nhung bien phap bao ve nao khac khong?
- Chuong trinh firewall khong the dam bao 100% an toan cho may tinh cua ban tuy day dang la bien phap duoc danh gia la co hieu qua nhat hien nay. Ngoai firewall, ban nen su dung them mot so phuong phap bao ve khac, nhu update he dieu hanh, cai dat cac phan mem chong virus nhu Windows Live OneCare, Antispyware...
7. Toi co nen su dung firewall khong neu toi co nhieu hon 1 chiec may tinh o nha va cong so?
- Nen. Vi virus co the lay lan tu mot sang nhieu may khac tren cung mot he thong.
8. Neu may tinh cua toi thuoc he dieu hanh chu cua cong ty, toi co nen bat chuong trinh firewall len khong?
- Trong truong hop nay, ban nen tuan theo cac yeu cau cua bo phan dieu hanh may chu. Trong mot so truong hop, bo phan dieu hanh se mac dinh tat ca cac may trong he thong khong the su dung duoc chuong trinh firewall. Neu may tinh ca nhan cua ban thuc su can thiet phai co chuong trinh firewall, hay thao luan voi bo phan ky thuat de cai dat rieng chuong trinh.
9. Toi co nen su dung chuong trinh firewall ca phan cung va phan mem tren he dieu hanh Windows XP hay khong?
- Khong nen. Cac chuong trinh phan mem firewall phuc tap khong thich hop cho may tinh ca nhan tai nha hay doanh nghiep nho ma chi thich hop voi he dieu hanh cua cac cong ty lon. Su dung ca 2 chuong trinh firewall phan cung va phan mem se gay kho khan khi truy cap Internet va cac su co khong mong doi khac.
10. Toi hien dang su dung Windows XP Home Edition. He dieu hanh nay co san chuong trinh Internet Connection Firewall hay khong?
- Co. Ca 2 he dieu hanh Windows XP Home Edition va Windows XP Professional deu co cai dat san chuong trinh Internet Connection Firewall.
11. Windows Firewall co the chong lai nhung gi?
- Windows Firewall hoat dong nhu mot chuong trinh chong lai cac loai sau may tinh. Sau may tinh cung tuong tu nhu virus, nhung no hoat dong doc lap hon va co the tu dong lay nhiem ma khong can su tro giup cua cac chuong trinh khac.
12. Windows Firewall khong the chong lai nhung gi?
- Windows Firewall trong he dieu hanh Windows XP khong the chong lai 3 loai virus sau:
+ Cac loai virus lan truyen qua email, nhu virus Trojan, thuong gia dang cac phan mem tien ich va may tinh se bi nhiem virus ngay khi nguoi su dung mo hoac cai dat cac file nay.
+ Thu rac hoac cac chuong trinh bi pop-up
+ Duong dan toi cac he thong khong day kem an toan khac.
13. Chuong trinh firewall co bao ve duoc he thong khong day hay khong?
- Chuong trinh firewall chi co the bao ve duoc mot may tinh tren 1 he dieu hanh khong day, chu khong the bao ve duoc ca mot he thong. Neu muon bao ve ca he thong, ban nen su dung them cac chuong trinh mat ma nhu WPA hoac WEP.
14. Toi su dung may laptop ket noi voi he thong may chu cua cong ty co cai dat chuong trinh firewall. Toi nen lam gi khi di du lich?
- Ban nen luon luon bat chuong trinh Internet Connection Firewall len khi ban truy cap vao Internet qua modem hoac bat cu mot phuong phap nao khac khi ban di du lich de tranh virus lay lan ra toan bo he thong may cua cong ty.
15. Toi co the tim hieu nhung thong tin chi tiet ve Windows Firewall va Firewall noi chung o dau?
- Hien nay website cung cap day du cac thong tin ve firewall nhat la Microsoft. Ban co the truy cap vao dia chi www.microsoft.com, sau do vao muc Protect your PC Support hoac Use the Internet Connection Firewall de tim kiem cac thong tin can thiet. Theo Xa Hoi Thong Tin Article source http://w4rum.com/428.t
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