do-ip6: no ; config options ; harden-referral-path: yes ; target-fetch-policy: "0 0 0 0 0" ; name: "." stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET. CONFIG_END SCENARIO_BEGIN Test NS record spoof protection. ; K.ROOT-SERVERS.NET. RANGE_BEGIN 0 100 ADDRESS 193.0.14.129 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION . IN NS SECTION ANSWER . IN NS K.ROOT-SERVERS.NET. SECTION ADDITIONAL K.ROOT-SERVERS.NET. IN A 193.0.14.129 ENTRY_END ENTRY_BEGIN MATCH opcode subdomain ADJUST copy_id copy_query REPLY QR NOERROR SECTION QUESTION com. IN NS SECTION AUTHORITY com. IN NS a.gtld-servers.net. SECTION ADDITIONAL a.gtld-servers.net. IN A 192.5.6.30 ENTRY_END ; for simplicity the root server is authoritative for root-servers.net ; and also for gtld-servers.net ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR AA NOERROR SECTION QUESTION K.ROOT-SERVERS.NET. IN A SECTION ANSWER K.ROOT-SERVERS.NET. IN A 193.0.14.129 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR AA NOERROR SECTION QUESTION a.gtld-servers.net. IN A SECTION ANSWER a.gtld-servers.net. IN A 192.5.6.30 ENTRY_END RANGE_END ; a.gtld-servers.net. RANGE_BEGIN 0 100 ADDRESS 192.5.6.30 ENTRY_BEGIN MATCH opcode subdomain ADJUST copy_id copy_query REPLY QR NOERROR SECTION QUESTION example.com. IN NS SECTION AUTHORITY example.com. IN NS ns.example.com. SECTION ADDITIONAL ns.example.com. IN A 1.2.3.4 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION com. IN NS SECTION ANSWER com. IN NS a.gtld-servers.net. SECTION ADDITIONAL a.gtld-servers.net. IN A 192.5.6.30 ENTRY_END RANGE_END ; ns.example.com. RANGE_BEGIN 0 100 ADDRESS 1.2.3.4 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. IN A 10.20.30.40 SECTION AUTHORITY example.com. IN NS ns.example.com. SECTION ADDITIONAL ns.example.com. IN A 1.2.3.4 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION mail.example.com. IN A SECTION ANSWER mail.example.com. IN A 10.20.30.50 SECTION AUTHORITY example.com. IN NS ns.example.com. SECTION ADDITIONAL ns.example.com. IN A 1.2.3.4 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR AA NOERROR SECTION QUESTION example.com. IN NS SECTION ANSWER example.com. IN NS ns.example.com. SECTION ADDITIONAL ns.example.com. IN A 1.2.3.4 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR AA NOERROR SECTION QUESTION ns.example.com. IN A SECTION ANSWER ns.example.com. IN A 1.2.3.4 SECTION AUTHORITY example.com. IN NS ns.example.com. ENTRY_END ;; answer to the spoofed query ; spoofed reply answer. ; here we put it in the nameserver for ease. ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION bad123.example.com. IN A SECTION ANSWER bad123.example.com. IN A 6.6.6.6 SECTION AUTHORITY ; evil NS set. example.com. IN NS bad123.example.com. ENTRY_END RANGE_END ; evil server RANGE_BEGIN 0 100 ADDRESS 6.6.6.6 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. IN A 6.6.6.6 SECTION AUTHORITY example.com. IN NS bad123.example.com. SECTION ADDITIONAL bad123.example.com. IN A 6.6.6.6 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION mail.example.com. IN A SECTION ANSWER mail.example.com. IN A 6.6.6.6 SECTION AUTHORITY example.com. IN NS bad123.example.com. SECTION ADDITIONAL bad123.example.com. IN A 6.6.6.6 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION bad123.example.com. IN A SECTION ANSWER bad123.example.com. IN A 6.6.6.6 SECTION AUTHORITY ; evil NS set. example.com. IN NS bad123.example.com. ENTRY_END RANGE_END STEP 1 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; recursion happens here. STEP 10 CHECK_ANSWER ENTRY_BEGIN MATCH all REPLY QR RD RA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. IN A 10.20.30.40 ;SECTION AUTHORITY ;example.com. IN NS ns.example.com. ;SECTION ADDITIONAL ;ns.example.com. IN A 1.2.3.4 ENTRY_END ; spoofed query STEP 20 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION bad123.example.com. IN A ENTRY_END ; recursion happens here. ; resolver gets address to spoofed server here STEP 30 CHECK_ANSWER ENTRY_BEGIN MATCH all REPLY QR RD RA NOERROR SECTION QUESTION bad123.example.com. IN A SECTION ANSWER bad123.example.com. IN A 6.6.6.6 ;SECTION AUTHORITY ;example.com. IN NS ns.example.com. ;SECTION ADDITIONAL ;ns.example.com. IN A 1.2.3.4 ENTRY_END ; a new query STEP 40 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION mail.example.com. IN A ENTRY_END STEP 50 CHECK_ANSWER ENTRY_BEGIN MATCH all REPLY QR RD RA NOERROR SECTION QUESTION mail.example.com. IN A SECTION ANSWER mail.example.com. IN A 10.20.30.50 ;SECTION AUTHORITY ;example.com. IN NS ns.example.com. ;SECTION ADDITIONAL ;ns.example.com. IN A 1.2.3.4 ENTRY_END SCENARIO_END