çµç¹ãããŒãã«ããé£èŒèšäºã®ç¶ã ãªã¢ãŒãã¢ã¯ã»ã¹VPN ã¢ã¯ã»ã¹ èå³æ·±ãå°å ¥äœéšãå ±æããã«ã¯ããããŸãã å®å šæ§ã®é«ã VPN æ§æã ãã顧客 (ãã·ã¢ã®æã«ãçºæ家ãããŸã) ããç°¡åã§ã¯ãªãã¿ã¹ã¯ãæ瀺ãããŸãããããã®èª²é¡ã¯åãå ¥ããããåµé çã«å®è£ ãããŸããã ãã®çµæã次ã®ãããªç¹åŸŽãæã€èå³æ·±ãã³ã³ã»ãããçãŸããŸããã
- 端æ«ããã€ã¹ã®ããæ¿ãã«å¯Ÿããä¿è·ã®ããã€ãã®èŠçŽ (ãŠãŒã¶ãŒã«å¯Ÿããå³å¯ãªææåãã)ã
- ãŠãŒã¶ãŒã® PC ããèªèšŒããŒã¿ããŒã¹å ã®èš±å¯ããã PC ã«å²ãåœãŠããã UDID ã«æºæ ããŠãããã©ãããè©äŸ¡ããŸãã
- Cisco DUO ã«ããäºæ¬¡èªèšŒã«èšŒææžã® PC UDID ã䜿çšãã MFA ã䜿çšãã (SAML/Radius äºæã®ãã®ãæ¥ç¶ã§ããŸã);
- å€èŠçŽ èªèšŒ:
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- ãã°ã€ã³å (å€æŽäžå¯ã蚌ææžããååŸ) ãšãã¹ã¯ãŒãã
- æ¥ç¶ãã¹ãã®ç¶æ (Posture)ã®æšå®
䜿çšããããœãªã¥ãŒã·ã§ã³ ã³ã³ããŒãã³ã:
- Cisco ASA (VPN ã²ãŒããŠã§ã€);
- Cisco ISE (èªèšŒ/èªå¯/ã¢ã«ãŠã³ãã£ã³ã°ãç¶æ è©äŸ¡ãCA);
- Cisco DUO (å€èŠçŽ èªèšŒ) (SAML/Radius äºæã®ãã®ãæ¥ç¶ã§ããŸã);
- Cisco AnyConnect (ã¯ãŒã¯ã¹ããŒã·ã§ã³ããã³ã¢ãã€ã« OS çšã®å€ç®çãšãŒãžã§ã³ã)ã
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- æ¥ç¶ããã€ã¹ (ãã®æ®µéã§ã¯ PC) ã®ç¶æ
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(ãã®ã·ããªãªã®) 顧客ã¯åœåããã®ãããªä¿è·ããã PC ã«å¯ŸããŠæåã¢ãŒãã§ç¹å®ã® UDID ãæã€èšŒææžãåå¥ã«çºè¡ããããšãèšç»ããŠããããšã«æ³šæããŠãã ãããããã¯é¡§å®¢ã«ãšã£ãŠåé¡ã§ã¯ãããŸããã ããããç§ãã¡ã®ã»ãšãã©ã¯èªååãæãã§ããŸã (ãŸããç§ã«ãšã£ãŠã¯ãããçå®ã§ã =))ã
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- Windows â DigitalProductID ãš Machine SID ã¬ãžã¹ã㪠ããŒã®çµã¿åããã® SHA-256 ããã·ã¥
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- Linux â ã«ãŒã ããŒãã£ã·ã§ã³ã® UUID ã® SHA-256 ããã·ã¥ã
- ã¢ããã«ã®iOS â SHA-256 ããã·ã¥ ãã©ãããã©ãŒã UUID
- Android â ã®ããã¥ã¡ã³ããåç
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Cisco ASA åŽã®èšå®ãæºåããŸãããã
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crypto ca trustpoint ISE-CA
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crl configure
èªèšŒã«äœ¿çšããã蚌ææžã®ãã£ãŒã«ãã«åŸã£ãã«ãŒã«ã«åºã¥ããŠãTunnel-Group ã«ããé åžãæ§æããŸãã åã®æ®µéã§äœæãã AnyConnect ãããã¡ã€ã«ãããã§èšå®ãããŸãã å€ã䜿çšããŠããããšã«æ³šæããŠãã ãã ã»ãã¥ã¢ãã³ã¯-RAãçºè¡ããã蚌ææžãæã€ãŠãŒã¶ãŒããã³ãã« ã°ã«ãŒãã«è»¢éããŸãã ã»ãã¥ã¢ãã³ã¯VPNãã®ãã£ãŒã«ã㯠AnyConnect ãããã¡ã€ã«èšŒææžèŠæ±åã«ããããšã«æ³šæããŠãã ããã
tunnel-group-map enable rules
!
crypto ca certificate map OU-Map 6
subject-name attr ou eq securebank-ra
!
webvpn
anyconnect profiles SECUREBANK disk0:/securebank.xml
certificate-group-map OU-Map 6 SECURE-BANK-VPN
!
èªèšŒãµãŒããŒã®ã»ããã¢ããã ç§ã®å Žåãããã¯èªèšŒã®æåã®æ®µéã® ISE ãš MFA ãšããŠã® DUO (Radius Proxy) ã§ãã
! CISCO ISE
aaa-server ISE protocol radius
authorize-only
interim-accounting-update periodic 24
dynamic-authorization
aaa-server ISE (inside) host 192.168.99.134
key *****
!
! DUO RADIUS PROXY
aaa-server DUO protocol radius
aaa-server DUO (inside) host 192.168.99.136
timeout 60
key *****
authentication-port 1812
accounting-port 1813
no mschapv2-capable
!
ã°ã«ãŒã ããªã·ãŒããã³ãã« ã°ã«ãŒããããã³ãã®è£å©ã³ã³ããŒãã³ããäœæããŸãã
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ãã³ãã«ã°ã«ãŒã ã»ãã¥ã¢ãã³ã¯VPN 蚌ææžãããã«åŸã£ãŠãæ¥ç¶ã¯ç¹ã«ãã®ãã³ãã« ã°ã«ãŒãã«å±ãããããåã®æ®µéã§çºè¡ããã蚌ææžã§èªèšŒãããšãã«ã¯ã©ã€ã¢ã³ãã«ãã£ãŠèªåçã«äœ¿çšãããŸãã ããã§ã¯èå³æ·±ããªãã·ã§ã³ã«ã€ããŠèª¬æããŸãã
- ã»ã«ã³ããªèªèšŒãµãŒãã°ã«ãŒã DUO # DUOãµãŒããŒïŒRadius ProxyïŒã«äºæ¬¡èªèšŒãèšå®ãã
- 蚌ææžCNããã®ãŠãŒã¶ãŒå # ãã©ã€ããªèªèšŒã®å Žåã蚌ææžã® CN ãã£ãŒã«ãã䜿çšããŠãŠãŒã¶ãŒ ãã°ã€ã³ãç¶æ¿ããŸãã
- 蚌ææžããã®ã»ã«ã³ããªãŠãŒã¶ãŒå I # DUO ãµãŒããŒã§ã®äºæ¬¡èªèšŒã«ã¯ãæœåºããããŠãŒã¶ãŒåãšèšŒææžã®ã€ãã·ã£ã« (I) ãã£ãŒã«ãã䜿çšãããŸãã
- äºåå ¥åãŠãŒã¶ãŒåã¯ã©ã€ã¢ã³ã # èªèšŒãŠã£ã³ããŠã«ãŠãŒã¶ãŒåãäºåã«å ¥åããå€æŽã§ããªãããã«ããŸã
- ã»ã«ã³ããª-pre-fill-username ã¯ã©ã€ã¢ã³ã㯠use-common-password ããã·ã¥ãé衚瀺ã«ããŸã # äºæ¬¡èªèšŒ DUO ã®ãã°ã€ã³/ãã¹ã¯ãŒãå
¥åãŠã£ã³ããŠãé衚瀺ã«ãããã¹ã¯ãŒã ãã£ãŒã«ãã®ä»£ããã«èªèšŒãèŠæ±ããéç¥æ¹æ³ (SMS/ããã·ã¥/é»è©±) - ããã¯ã䜿çšããŸãã
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!
access-list posture-redirect extended permit tcp any host 72.163.1.80
access-list posture-redirect extended deny ip any any
!
access-list VPN-Filter extended permit ip any any
!
ip local pool vpn-pool 192.168.100.33-192.168.100.63 mask 255.255.255.224
!
group-policy SECURE-BANK-VPN internal
group-policy SECURE-BANK-VPN attributes
dns-server value 192.168.99.155 192.168.99.130
vpn-filter value VPN-Filter
vpn-tunnel-protocol ssl-client
split-tunnel-policy tunnelall
default-domain value ashes.cc
address-pools value vpn-pool
webvpn
anyconnect ssl dtls enable
anyconnect mtu 1300
anyconnect keep-installer installed
anyconnect ssl keepalive 20
anyconnect ssl rekey time none
anyconnect ssl rekey method ssl
anyconnect dpd-interval client 30
anyconnect dpd-interval gateway 30
anyconnect ssl compression lzs
anyconnect dtls compression lzs
anyconnect modules value iseposture
anyconnect profiles value SECUREBANK type user
!
group-policy AC-DOWNLOAD internal
group-policy AC-DOWNLOAD attributes
dns-server value 192.168.99.155 192.168.99.130
vpn-filter value VPN-Filter
vpn-tunnel-protocol ssl-client
split-tunnel-policy tunnelall
default-domain value ashes.cc
address-pools value vpn-pool
scep-forwarding-url value http://ise.ashes.cc:9090/auth/caservice/pkiclient.exe
webvpn
anyconnect ssl dtls enable
anyconnect mtu 1300
anyconnect keep-installer installed
anyconnect ssl keepalive 20
anyconnect ssl rekey time none
anyconnect ssl rekey method ssl
anyconnect dpd-interval client 30
anyconnect dpd-interval gateway 30
anyconnect ssl compression lzs
anyconnect dtls compression lzs
anyconnect modules value iseposture
anyconnect profiles value SECUREBANK type user
!
tunnel-group DefaultWEBVPNGroup general-attributes
address-pool vpn-pool
authentication-server-group ISE
accounting-server-group ISE
default-group-policy AC-DOWNLOAD
scep-enrollment enable
tunnel-group DefaultWEBVPNGroup webvpn-attributes
authentication aaa certificate
!
tunnel-group SECURE-BANK-VPN type remote-access
tunnel-group SECURE-BANK-VPN general-attributes
address-pool vpn-pool
authentication-server-group ISE
secondary-authentication-server-group DUO
accounting-server-group ISE
default-group-policy SECURE-BANK-VPN
username-from-certificate CN
secondary-username-from-certificate I
tunnel-group SECURE-BANK-VPN webvpn-attributes
authentication aaa certificate
pre-fill-username client
secondary-pre-fill-username client hide use-common-password push
group-alias SECURE-BANK-VPN enable
dns-group ASHES-DNS
!
次㫠ISE ã«é²ã¿ãŸãã
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- 段é1 â AnyConnect ãšãŒãžã§ã³ãã®ããŠã³ããŒããšèšŒææžã®çºè¡ã«é¢ããããªã·ãŒ
- 段é2 â ãã©ã€ããªèªèšŒããªã·ãŒ ãã°ã€ã³ (蚌ææžãã)/ãã¹ã¯ãŒã + UDID æ€èšŒä»ã蚌ææž
- 段é3 â UDID ããŠãŒã¶ãŒåãšããŠäœ¿çšãã Cisco DUO (MFA) ã«ããäºæ¬¡èªèšŒ + ç¶æ è©äŸ¡
- 段é4 â æçµçãªæ¿èªã¯æ¬¡ã®ç¶æ
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- Cisco DUO MFA;
- ãã°ã€ã³ã«ããèªèšŒã
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