IPv6 IMPLEMENTATION IN VNPT
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1 IPv6 IMPLEMENTATION IN VNPT VŨ XUÂN NHÀN 11/2016 NOC VNPT Net 1
2 Contents 6PE/6VPE model IPv6 implementation in VNPT Service models IPv6 allocation IPv6 CPE IPv6 security threats Problems 11/29/2016 VNNIC NOG 2
3 6PE/6VPE model Transporting IPv6 traffic in IPv4 based MPLS network No change in core MPLS network, only in PE/ASBR Enable inet6 label-unicast, inet6-vpn, inet6-mvpn, ipv6-tunneling 11/29/2016 VNNIC NOG 3
4 6PE/6VPE model APPs Web UPSTREAMS/ PEERINGS IPv6 RR Inet & VPN ebgp DualStack BRAS ibgp IPv6 ASBR- IXP (6PE) MANE PE/BNG (6PE) VN2 ebgp DualStack DOMESTIC PEERINGS CPE DSLAM/ SWITC H VPN ASBR- NIX (6PE) MANE PE/BNG (6PE) RR IPv6 APPs Web CPE 11/29/2016 VNNIC NOG 4
5 Contents 6PE/6VPE model IPv6 implementation in VNPT Service models IPv6 allocation IPv6 CPE IPv6 security threats Problems 11/29/2016 VNNIC NOG 5
6 IPv6 implementation in VNPT Target Dual-stack: Pure IPv6: from 2020 Services ILL (Internet Leased Line), IPv6 transit IPv6 L3VPN HSI (High Speed Internet) 4G/LTE (dual-stack) Hosting/ server 11/29/2016 VNNIC NOG 6
7 Service models: ILL, IPv6 transit APPs UPSTREAMS/ PEERINGS IPv6 CE ebgp DualStack IPv6 MANE PE (6PE) VN2 ASBR- IXP (6PE) ebgp DualStack DOMESTIC CPE DSLAM/SWITCH ASBR- NIX (6PE) PE (6PE) RR IPv6 APPs Web CPE 11/29/2016 VNNIC NOG 7
8 Service models: IPv6 L3VPN CPE VPN CE MANE VPN PE (6VPE) VN2 PE (6VPE) VPN CPE DSLAM/SWITCH PE (6VPE) PE (6PE) RR IPv6 VPN 11/29/2016 VNNIC NOG 8
9 Service models: HSI TẬP ĐOÀN BƯU CHÍNH VIỄN THÔNG VIỆT NAM APPs Web UPSTREAMS/ PEERINGS IPv6 BRAS Radius RR Inet & VPN ibgp ebgp DualStack IPv6 MANE PE (6PE) VN2 ASBR- IXP (6PE) ebgp DualStack DOMESTIC CPE DSLAM/ SWITCH ASBR- NIX (6PE) MANE PE/BNG (6PE) RR IPv6 APPs Web CPE DSLAM/ SWITCH 11/29/2016 VNNIC NOG 9
10 IPv6 Allocation Total: /32 Loopback: /128 Connected IP: point-to-point /126 or /127. /64 for each router Broadband subscribers: N*/40 for each province N*/64 for each subscriber /40-/45 aggregated before being advertised 11/29/2016 VNNIC NOG 10
11 IPv6 Allocation TẬP ĐOÀN BƯU CHÍNH VIỄN THÔNG VIỆT NAM Unique Local Address (fc00::/7) or Global unicast IPv6 for Internal IP addresses? 11/29/2016 VNNIC NOG 11
12 IPv6 Allocation schemes for broadband subscribers 01*/64 for each subscriber? 01*/64 WAN and N*/64 LAN for each subscriber? DHCPv6 IA_NA, NDRA and DHCPv6 PD 11/29/2016 VNNIC NOG 12
13 IPv6 Allocation schemes for broadband subscribers: Radius attributes 11/29/2016 VNNIC NOG 13
14 IPv6 Addressing: DHCPv6 IA_NA and DHCPv6 PD 11/29/2016 VNNIC NOG 14
15 IPv6 Addressing: NDRA and DHCPv6 prefix Delegation 11/29/2016 VNNIC NOG 15
16 IPv6 Addressing: NDRA TẬP ĐOÀN BƯU CHÍNH VIỄN THÔNG VIỆT NAM 11/29/2016 VNNIC NOG 16
17 IPv6 Addressing: DHCPv6 prefix Delegation 11/29/2016 VNNIC NOG 17
18 IPv6 Allocation schemes for broadband subscribers VNPT uses: DHCPv6 PD NDRA and DHCPv6 PD Other ISPs 11/29/2016 VNNIC NOG 18
19 IPv6 for L3VPN Unique Local Address (fc00::/7)? Cannot be routed in internet NAT may needed! More secured Global unicast? Address overlapping Multihoming 11/29/2016 VNNIC NOG 19
20 IPv6 supported CPE GPON Huawei, ZTE GPON VNPT Technology AON? EMS: Remotely IPv6 enable? 11/29/2016 VNNIC NOG 20
21 Contents 6PE/6VPE model IPv6 implementation in VNPT Service models IPv6 allocation IPv6 CPE IPv6 security threats Problems 11/29/2016 VNNIC NOG 21
22 IPv6 security threats Reconnaissance in IPv6 Neighbor Discovery Issues L3 Spoofing in IPv6 DHCPv6 Threats 11/29/2016 VNNIC NOG 22
23 Reconnaissance in IPv6 Attackers use site-local multicast addresses (FF05::2 all-routers, FF05::FB mdnsv6, FF05::1:3 all DHCP servers) or link-local multicast addresses (FF02::1 all nodes, FF02::2 all routers) Reconnaissance preventing Block FEC0::/10 (deprecated site-local addresses) Permit mcast to FF02::/16 (link-local scope) Permit mcast to FF0E::/16 (global scope) Block all mcast 11/29/2016 VNNIC NOG 23
24 Neighbor Discovery Issues Fake IPv6 router sends out RA packets. New client may receives fake RAs then connects to the fake IPv6 router. Attacker sends fakes Neighbor advertisements. Clients send all packets to the attacker. Attacker listens for ICMPv6 DAD packets and sends a response that this IPv6 address already exists. 11/29/2016 VNNIC NOG 24
25 Neighbor Discovery Issues: Mitigation Block ICMPv6 RA from hosts Secure Neighbor Discovery (for ND and DAD issues) 11/29/2016 VNNIC NOG 25
26 L3 Spoofing in IPv6 TẬP ĐOÀN BƯU CHÍNH VIỄN THÔNG VIỆT NAM Tool for Protecting Against L3 Spoofing: urpf 11/29/2016 VNNIC NOG 26
27 DHCPv6 Threats Rogue DHCPv6 client and servers on the linklocal multicast address (FF02::1:2) Rogue DHCPv6 servers on the site-local multicast address (FF05::1:3) Mitigation: DHCPv6 authentication ACL to block DHCPv6 traffic (UDP 546, 547) 11/29/2016 VNNIC NOG 27
28 IPv6 security threats: Protect ISP s network Well tested IPv6 filter for router s loopback Well tested IPv6 filter for customer facing interfaces IPv6 DDoS and DDoS Mitigation 11/29/2016 VNNIC NOG 28
29 Protect ISP s network: protect RE Permit inet6 BGP peers Police DHCP, icmp, UDP traceroute, TCP established Discard others 11/29/2016 VNNIC NOG 29
30 Protect ISP s network: protect ISP Permit inet6 BGP peers Police icmp, UDP traceroute Discard connections to Internal IP adds Permit others 11/29/2016 VNNIC NOG 30
31 Contents 6PE/6VPE model IPv6 implementation in VNPT Service models IPv6 allocation IPv6 CPE IPv6 security threats Problems 11/29/2016 VNNIC NOG 31
32 Problems Radius, VISA, LDAP Billing DNS IPv6 security IPv6 contents 11/29/2016 VNNIC NOG 32
33 Discussion 11/29/2016 VNNIC NOG 33
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