Firewall αိုαိုαိုαာα
Firewall αိုαာα αြα½α္ေαာ္ αိုαေαြαဲα Computer α်ားαα္ αα ္αံုးႏွα့္αα ္αံုး
α‘ျαα္α‘αွα္ Network α်ိα္αα္αားαΏαီး αိαိαိုααဲαα‘ေαးααီးαဲ့ Data α်ားαို Network
ေαααေααα ္αα့္ αα္αံαဲ့ေααာαွာ Attacker, Hacker ႏွα့္ Intruder αိုααဲα
αα္ေαာα္ေႏွာα္αွα္αႈေαΎαာα့္ αိαိαိုααဲαα‘ေαးααီးαဲ့ Data ေαြ ααံုးαံႈးαြားေα‘ာα္
αိုးαူαႈααံαေα‘ာα္ αာαြα္ေαးαဲ့ေααာαွာ α‘αံုးျαဳααာαို Firewall αိုαေαααါαα္။
Firewall αွာ Hardware Firewall ႏွα့္ Software Firewall αိုαΏαီး(α)α်ိဳးαွိαါαα္။ Firewall
αို αြα½α္ေαာ္αိုααα ္ေαြ αα္αိုေααာα်ိဳးαွာ α‘αံုးျαဳαα့္ααဲαိုαα္ αိαိαဲα Internal
Network ျαα ္αဲ့ Private Network αα္ External Network ျαα ္αဲ့ Public Network
αဲαα်ိα္αα္ေαာ့αα္αိုαα္ αိαိαဲα Private Network ႏွα့္ Public Network ႏွα ္αုαဲααΎαားαြα္
Firewall αို α‘αံုးျαဳαα့္αါαα္။ Firewall α‘αုα္αုα္αဲ့αံုα ံαေαာ့ Allow ႏွα့္ Dissallow
αိုαဲ့ αံုα ံ(α)α်ိဳးαဲαဲααဲ α‘αုα္αုα္αါαα္။
Firewall α‘α်ိဳးα‘α ားα်ား
Firewall αဲαα‘α်ိဳးα‘α ားαို (α)α်ိဳးαြဲျαားαားαါαα္။
1. Packet Filter Firewall
2. Circuit Filter Firewall
3. Application Filter Firewall
4. State-Full Filter Firewall αိုα ျαα ္αါαα္။
Firewall α‘α်ိဳးα‘α ားေαြ αြဲျαားαြားααဲ့ α‘ေαΎαာα္းαα္းαေαာ့ OSI Seven Layer
α‘αိုα္ α‘αုα္αုα္αဲ့αံုα ံေαα αူαα္αΏαီးေαာ့ Firewall α‘α်ိဳးα‘α ားေαြ αြဲျαားαြားαျαα္းαဲ
ျαα ္αါαα္။ αဲ--- αီေαာ့ αြα½α္ေαာ္α α‘ဲαီ Firewall α‘α်ိဳးα‘α ား(α)α်ိဳး
α‘αုα္αုα္αဲ့αံုα ံαို ေျαာျαေαးαါαα္။
- Packet Filter Firewall
Packet Filter Firewall α‘αုα္αုα္α့ဲ αုံα ံαေαာ့ IP Packet ေααြ αဲ Source Address ααဲ
Destination Address ေαြαို α α ္ေαးαα္။ Firewall α α ္ေαးαဲ့αံုα ံα αိαိαဲα ACL
(Access Control List) ေαα αူαα္αΏαီး α α ္ေαးαါαα္။ Source Address αဲα Destination
Address αα္ αိαိαဲα Rule αဲα αိုα္αီαႈ αွိαα္αိုαα္ Allow αုα္αြα့္ေαးαΏαီး αိαိαဲα Rule αဲα
αိုα္αီαႈ ααွိαα္ေαာ့ Disallow αုα္αα ္αိုα္αါαα္။ Packet Filter Firewall αα္ OSI
Seven Layer αဲα Network Layer αွာ α‘αုα္αုα္αါαα္။
- Circuit Filter Firewall
Circuit Filter Firewall α‘αုα္αုα္αဲ့ αံုα ံαေαာ့ Packet ေαြαို α α ္ေαးαါαα္။
α α ္ေαးαဲ့ေααာαွာ αိαိαဲα ACL (Access Control List) ေαα αူαα္αΏαီး α α ္ေαးαါαα္။ αိαိ
αဲα Rule αဲα αိုα္αီαႈαွိαဲ့ Packet αို Allow αုα္ααြ ့္ေαးαΏαီး αိαိααဲ Rule ααဲ αိုα္αီαႈααိွα့ဲ
Packet αိုေαာ့ Disallow αုα္αα ္αိုα္αါαα္။
Circuit Filter Firewall αα္ OSI Seven Layer αဲα Transport Layer αွာ
α‘αုα္αုα္αါαα္။
- Application Filter Firewall
Application Filter Firewall α‘αုα္αုα္αဲ့αံုα ံαေαာ့ Application Service ေαြαုိ
α α ္ေαးαါαα္။ α α ္ေαးαဲ့ေααာαွာ αိαိαဲα ACL ေαα αူαα္αΏαီး α α ္ေαးေαးαါαα္။ αိαိ
Rule αဲα αိုα္αီαႈαွိαဲ့ Application Service ေαြαို Allow αုα္αြα့္ေαးαΏαီး αိαိαဲα Rule αဲα
αိုα္αီαႈααွိαဲ့ Application Service ေαြαိုေαာ့ Disallow αုα္αα ္αိုα္αါαα္။
Application Filter Firewall αα္ OSI Sever Layer αဲα Application Layer αွာ
α‘αုα္αုα္αါαα္။
-State-Full Filter Firewall
State-Full Filter Firewall αိုαာαေαာ့--- Packet Filter Firewall, Circuit Filter
Firewall ႏွα့္ Application Filter Firewall (α)αုαို ေαါα္းα α္αားαဲ့ Firewall ααီး αα ္αု
αΏαα ္αါαα္။ ၎ State-Full Filter Firewall αα္ αိαိαဲα ACL ေαα αူαα္αΏαီး Allow
αုα္αြα့္ေαးαားαဲ့ Application Service, Pocket ႏွα့္ Source Address, Destination
Address αိုααို Allow αုα္αြα့္ေαးαΏαီး αိαိαဲα Rule αဲαααိုα္αီαဲ့α‘αာေαြ α‘ားαံုးαိုေαာ့
Disallow αုα္αα ္αိုα္αါαα္။
αဲ--- Firewall αိုαာ αာαဲαိုααားαα္αြားαΏαီ---ေαာα္αΏαီး Firewall ေαြ α‘α်ိဳးα‘α ား
αα္ႏွα ္α်ိဳးαွိαα္αိုαာαဲαိαΏαီ--- ေαာα္αΏαီး --- Firewall ေαြ
αα္αိုα‘αုα္αုα္αα္αိုαာαဲ αိαြားαΏαီျαα ္αိုα Firewall α‘ေαΎαာα္းαို αီαွာαα္αား
αြα့္ျαဳαါ။
PDF α‘ေαျαα္α ေαါα္းα α္
