217.320traceroute
traceroute 时间:2021-05-17 阅读:()
AcuriouscaseofbrokenDNSresponsesBabakFarrokhiRIPE75AboutmeUnixSA(FreeBSD,Solaris,Linux)since1996IPNetworkingsince1997FreeBSDPortsTeamsince2004Enthusiasticcoder@farrokhiPrologueWhenitcomestonetwork,IalwayshavetrustissuesMostpeopleignorethosestrangenetworkbehaviorsOnlyafewpeopletaketheredpillandgodowntherabbithole.
.
.
ObservationOutgoingSMTPfailsduetoMXlookupfailuresonlycertaindomains(e.
g.
twitter.
com)Localresolverreturns"incorrect"responsePublicResolver(e.
g.
Google)alsoreturnedincorrectresponseIneededtolookdeeperintothisDowntherabbithole.
.
.
StrangeresponsesfrompublicresolversThisisnotwhatIexpectedtogetfromapublicresolver:%dig+short-tAtwitter.
com@8.
8.
8.
810.
10.
34.
34%dig+short-tAripe.
net@8.
8.
8.
8193.
0.
6.
139%dig-tMXtwitter.
com@8.
8.
8.
8;;Gotbadpacket:badlabeltype45bytes40108180000100010000000007747769twi7474657203636f6d00000c0001c00c00tter.
com.
.
.
.
.
.
.
.
0c000100000379000341414100.
.
.
.
.
.
y.
.
AAA.
NeedtotakeacloserlookNotobviousatfirstglance,buttimedeltaisstrange.
.
.
%tcpdump-ttt-c2-nqrripe.
pcapreadingfromPCAP-NGfileripe.
pcap00:00:00.
000000IP192.
168.
0.
132.
53425>8.
8.
8.
8.
53:UDP,length2700:00:00.
138933IP8.
8.
8.
8.
53>192.
168.
0.
132.
53425:UDP,length75%tcpdump-ttt-c2-nqrtwitter.
pcapreadingfromPCAP-NGfiletwitter.
pcap00:00:00.
000000IP192.
168.
0.
132.
58418>8.
8.
8.
8.
53:UDP,length2900:00:00.
028077IP8.
8.
8.
8.
53>192.
168.
0.
132.
58418:UDP,length45dnsping-AnewtoolisbornStartedasahumblePythonscripttosolvemyownproblemNotintendedtore-inventthewheelSimilaruserexperienceasthelegacyPING%.
/dnsping.
py-s8.
8.
8.
8-c3ripe.
netdnsping.
pyDNS:8.
8.
8.
8:53,hostname:ripe.
net,rdatatype:A32bytesfrom8.
8.
8.
8:seq=0time=200.
371ms32bytesfrom8.
8.
8.
8:seq=1time=217.
320ms32bytesfrom8.
8.
8.
8:seq=2time=236.
644ms---8.
8.
8.
8dnspingstatistics---3requeststransmitted,3responsesreceived,0%lostmin=200.
371ms,avg=218.
112ms,max=236.
644ms,stddev=18.
149msICMPvsDNSResponseTimes%ping-q-c108.
8.
8.
8PING8.
8.
8.
8(8.
8.
8.
8):56databytes---8.
8.
8.
8pingstatistics---10packetstransmitted,10packetsreceived,0.
0%packetlossround-tripmin/avg/max/stddev=124.
237/155.
044/227.
499/31.
464ms%.
/dnsping.
py-q-s8.
8.
8.
8-c3twitter.
comdnsping.
pyDNS:8.
8.
8.
8:53,hostname:twitter.
com,rdatatype:A---8.
8.
8.
8dnspingstatistics---3requeststransmitted,3responsesreceived,0%lostmin=12.
934ms,avg=21.
355ms,max=29.
425ms,stddev=8.
251msFirstanomalyDifferentdomainnamesbeingtreateddifferentlyAroguenameserverimpersonatingasGoogleResolverTheroguenameserverisclosetome(givenresponsetimes)WhereisitAndhowcanIfindoutdnstraceroute:TraceroutetoolforDNSprotocolSimilartolegacytraceroute,butforDNSprotocolSendoutactualDNSqueriesandexpectaresponseUsingTTLtricktomapthejourneyCouldnotuselegacytraceroutewithUDPprobesThetrafficredirectionisbasedonDNS"payload"RealvsRogueDNSServers%.
/dnstraceroute.
py-s8.
8.
8.
8ripe.
netdnstraceroute.
pyDNS:8.
8.
8.
8:53,hostname:ripe.
net,rdatatype:A1192.
168.
0.
1(192.
168.
0.
1)3.
912ms2*3192.
168.
10.
105(192.
168.
10.
105)15.
792ms4172.
17.
2.
1(172.
17.
2.
1)17.
063ms5172.
17.
2.
9(172.
17.
2.
9)11.
245ms6172.
19.
18.
5(172.
19.
18.
5)24.
862ms7172.
19.
17.
2(172.
19.
17.
2)18.
972ms810.
201.
177.
41(10.
201.
177.
41)13.
261ms910.
10.
53.
190(10.
10.
53.
190)14.
240ms10185.
100.
209.
117(185.
100.
209.
117)176.
592ms11*12de-cix.
fra.
google.
com(80.
81.
192.
108)152.
757ms13108.
170.
251.
193(108.
170.
251.
193)90.
347ms14google-public-dns-a.
google.
com(8.
8.
8.
8)185.
401ms%.
/dnstraceroute.
py-s8.
8.
8.
8twitter.
comdnstraceroute.
pyDNS:8.
8.
8.
8:53,hostname:twitter.
com,rdatatype:A1192.
168.
0.
1(192.
168.
0.
1)3.
160ms2*3192.
168.
10.
105(192.
168.
10.
105)5.
985ms4172.
17.
2.
1(172.
17.
2.
1)8.
535ms5172.
17.
2.
9(172.
17.
2.
9)20.
617ms6172.
19.
18.
5(172.
19.
18.
5)7.
823ms7*8*9google-public-dns-a.
google.
com(8.
8.
8.
8)19.
557msBacktothecaseofbrokenMXRoguenameserveralsoreturns"broken"responsesOnlytocertaintypeofqueries(e.
g.
MX)%dig-tMXtwitter.
com@8.
8.
8.
8;;Gotbadpacket:badlabeltype45bytes40108180000100010000000007747769twi7474657203636f6d00000c0001c00c00tter.
com.
.
.
.
.
.
.
.
0c000100000379000341414100.
.
.
.
.
.
y.
.
AAA.
Lookingatpacketsagain.
.
.
ResponsetoMXrequestismalformedServerrespondedwithPTRresponseRDLENGTHis3butRDATAfieldcontains4bytesAdditionalbytewasalwaysNULLSeemslikeabugincodeQueriedtop10,000domainnames[1],received139brokenresponses[2]UncoveringtherougeresolveraddressQueryTXTrecordfrommaxmind.
test-ipv6.
comIttellsyouthepublicaddressofyourresolverTheaddressshouldbelongtoGoogle(AS15169)AnythingelsemeansMITMUsingRIPEAtlastoseeifthisisaregularpractice%dig+short-tTXTmaxmind.
test-ipv6.
com@8.
8.
4.
4"ip='74.
125.
74.
14'as='15169'isp='Google'country='FI'"IsitjustmeLet'saskRIPEAtlas500Probesworldwide-484Replied(DNS/UDP/IPv4)475Good(Req.
fromGoogleaddressspace)~98%9Bad(Req.
fromnon-Googleaddressspace)~2%Same500probes-484Replied(DNS/TCP/IPv4)479Good~99%5Bad~1%ThelogicbehindDNStrafficredirectionWhatisthemotivationTherearemainlytworeasons:1.
Privacyprotection(TheGood)Preventsendingrequesttousehaveyourend-pointIPaddressasitssourceaddressFilteroutmalwareslookingfortheirC&C2.
DNSbasedserviceredirection(TheEvil)RestrictyouraccessRedirectyourtrafficCountermeasuresForcelocalresolvertouseTCPDNSCrypt(dnscrypt.
org)OpenDNSsupportsit,desktopclientsavailableDNSoverTLS/DTLS(RFC7858and8094)DNSPrivacyProject(dnsprivacy.
org)offerstutorials,tools,recommendationsandtestserversDNSSECFromtop100domainnamesonly2ofthemaresigned[3]WhatiftheroguenameserverdoesnotvalidateDNSSECFinalwordsDon'ttrustapublicDNSresolver,useyourownThereain'tnosuchthingasafreelunch(TANSTAAFL)Stubresolversareeasytosetupanduse(e.
g.
Stubby)Don'ttrustyourupstream,encryptasmuchaspossibleDNScontainsimportantinformationAsperRFC7258:"PervasiveMonitoringIsanAttack"Toolsofthetradednsping,dnstracerouteanddnsevalarepartof"dnsdiagtoolkit"onGitHub[4]LookingforfeedbackandideasfromcommunityCombiningwithothertools(e.
g.
RIPEAtlas)toperformmorecomplexbehavioranalysisSuggestion:dnstracerouteinRIPEAtlasprobesQuestionsResources[1]https://github.
com/opendns/public-domain-lists[2]https://gist.
github.
com/farrokhi/0b56ae06813391be9164[3]https://gist.
github.
com/farrokhi/1d9de9df5877aaf9c42fc14412a4b0f8[4]https://github.
com/farrokhi/dnsdiagAlsomyarticlesonRIPELabsdiscussionthesameissue:https://labs.
ripe.
net/Members/babak_farrokhi
.
.
ObservationOutgoingSMTPfailsduetoMXlookupfailuresonlycertaindomains(e.
g.
twitter.
com)Localresolverreturns"incorrect"responsePublicResolver(e.
g.
Google)alsoreturnedincorrectresponseIneededtolookdeeperintothisDowntherabbithole.
.
.
StrangeresponsesfrompublicresolversThisisnotwhatIexpectedtogetfromapublicresolver:%dig+short-tAtwitter.
com@8.
8.
8.
810.
10.
34.
34%dig+short-tAripe.
net@8.
8.
8.
8193.
0.
6.
139%dig-tMXtwitter.
com@8.
8.
8.
8;;Gotbadpacket:badlabeltype45bytes40108180000100010000000007747769twi7474657203636f6d00000c0001c00c00tter.
com.
.
.
.
.
.
.
.
0c000100000379000341414100.
.
.
.
.
.
y.
.
AAA.
NeedtotakeacloserlookNotobviousatfirstglance,buttimedeltaisstrange.
.
.
%tcpdump-ttt-c2-nqrripe.
pcapreadingfromPCAP-NGfileripe.
pcap00:00:00.
000000IP192.
168.
0.
132.
53425>8.
8.
8.
8.
53:UDP,length2700:00:00.
138933IP8.
8.
8.
8.
53>192.
168.
0.
132.
53425:UDP,length75%tcpdump-ttt-c2-nqrtwitter.
pcapreadingfromPCAP-NGfiletwitter.
pcap00:00:00.
000000IP192.
168.
0.
132.
58418>8.
8.
8.
8.
53:UDP,length2900:00:00.
028077IP8.
8.
8.
8.
53>192.
168.
0.
132.
58418:UDP,length45dnsping-AnewtoolisbornStartedasahumblePythonscripttosolvemyownproblemNotintendedtore-inventthewheelSimilaruserexperienceasthelegacyPING%.
/dnsping.
py-s8.
8.
8.
8-c3ripe.
netdnsping.
pyDNS:8.
8.
8.
8:53,hostname:ripe.
net,rdatatype:A32bytesfrom8.
8.
8.
8:seq=0time=200.
371ms32bytesfrom8.
8.
8.
8:seq=1time=217.
320ms32bytesfrom8.
8.
8.
8:seq=2time=236.
644ms---8.
8.
8.
8dnspingstatistics---3requeststransmitted,3responsesreceived,0%lostmin=200.
371ms,avg=218.
112ms,max=236.
644ms,stddev=18.
149msICMPvsDNSResponseTimes%ping-q-c108.
8.
8.
8PING8.
8.
8.
8(8.
8.
8.
8):56databytes---8.
8.
8.
8pingstatistics---10packetstransmitted,10packetsreceived,0.
0%packetlossround-tripmin/avg/max/stddev=124.
237/155.
044/227.
499/31.
464ms%.
/dnsping.
py-q-s8.
8.
8.
8-c3twitter.
comdnsping.
pyDNS:8.
8.
8.
8:53,hostname:twitter.
com,rdatatype:A---8.
8.
8.
8dnspingstatistics---3requeststransmitted,3responsesreceived,0%lostmin=12.
934ms,avg=21.
355ms,max=29.
425ms,stddev=8.
251msFirstanomalyDifferentdomainnamesbeingtreateddifferentlyAroguenameserverimpersonatingasGoogleResolverTheroguenameserverisclosetome(givenresponsetimes)WhereisitAndhowcanIfindoutdnstraceroute:TraceroutetoolforDNSprotocolSimilartolegacytraceroute,butforDNSprotocolSendoutactualDNSqueriesandexpectaresponseUsingTTLtricktomapthejourneyCouldnotuselegacytraceroutewithUDPprobesThetrafficredirectionisbasedonDNS"payload"RealvsRogueDNSServers%.
/dnstraceroute.
py-s8.
8.
8.
8ripe.
netdnstraceroute.
pyDNS:8.
8.
8.
8:53,hostname:ripe.
net,rdatatype:A1192.
168.
0.
1(192.
168.
0.
1)3.
912ms2*3192.
168.
10.
105(192.
168.
10.
105)15.
792ms4172.
17.
2.
1(172.
17.
2.
1)17.
063ms5172.
17.
2.
9(172.
17.
2.
9)11.
245ms6172.
19.
18.
5(172.
19.
18.
5)24.
862ms7172.
19.
17.
2(172.
19.
17.
2)18.
972ms810.
201.
177.
41(10.
201.
177.
41)13.
261ms910.
10.
53.
190(10.
10.
53.
190)14.
240ms10185.
100.
209.
117(185.
100.
209.
117)176.
592ms11*12de-cix.
fra.
google.
com(80.
81.
192.
108)152.
757ms13108.
170.
251.
193(108.
170.
251.
193)90.
347ms14google-public-dns-a.
google.
com(8.
8.
8.
8)185.
401ms%.
/dnstraceroute.
py-s8.
8.
8.
8twitter.
comdnstraceroute.
pyDNS:8.
8.
8.
8:53,hostname:twitter.
com,rdatatype:A1192.
168.
0.
1(192.
168.
0.
1)3.
160ms2*3192.
168.
10.
105(192.
168.
10.
105)5.
985ms4172.
17.
2.
1(172.
17.
2.
1)8.
535ms5172.
17.
2.
9(172.
17.
2.
9)20.
617ms6172.
19.
18.
5(172.
19.
18.
5)7.
823ms7*8*9google-public-dns-a.
google.
com(8.
8.
8.
8)19.
557msBacktothecaseofbrokenMXRoguenameserveralsoreturns"broken"responsesOnlytocertaintypeofqueries(e.
g.
MX)%dig-tMXtwitter.
com@8.
8.
8.
8;;Gotbadpacket:badlabeltype45bytes40108180000100010000000007747769twi7474657203636f6d00000c0001c00c00tter.
com.
.
.
.
.
.
.
.
0c000100000379000341414100.
.
.
.
.
.
y.
.
AAA.
Lookingatpacketsagain.
.
.
ResponsetoMXrequestismalformedServerrespondedwithPTRresponseRDLENGTHis3butRDATAfieldcontains4bytesAdditionalbytewasalwaysNULLSeemslikeabugincodeQueriedtop10,000domainnames[1],received139brokenresponses[2]UncoveringtherougeresolveraddressQueryTXTrecordfrommaxmind.
test-ipv6.
comIttellsyouthepublicaddressofyourresolverTheaddressshouldbelongtoGoogle(AS15169)AnythingelsemeansMITMUsingRIPEAtlastoseeifthisisaregularpractice%dig+short-tTXTmaxmind.
test-ipv6.
com@8.
8.
4.
4"ip='74.
125.
74.
14'as='15169'isp='Google'country='FI'"IsitjustmeLet'saskRIPEAtlas500Probesworldwide-484Replied(DNS/UDP/IPv4)475Good(Req.
fromGoogleaddressspace)~98%9Bad(Req.
fromnon-Googleaddressspace)~2%Same500probes-484Replied(DNS/TCP/IPv4)479Good~99%5Bad~1%ThelogicbehindDNStrafficredirectionWhatisthemotivationTherearemainlytworeasons:1.
Privacyprotection(TheGood)Preventsendingrequesttousehaveyourend-pointIPaddressasitssourceaddressFilteroutmalwareslookingfortheirC&C2.
DNSbasedserviceredirection(TheEvil)RestrictyouraccessRedirectyourtrafficCountermeasuresForcelocalresolvertouseTCPDNSCrypt(dnscrypt.
org)OpenDNSsupportsit,desktopclientsavailableDNSoverTLS/DTLS(RFC7858and8094)DNSPrivacyProject(dnsprivacy.
org)offerstutorials,tools,recommendationsandtestserversDNSSECFromtop100domainnamesonly2ofthemaresigned[3]WhatiftheroguenameserverdoesnotvalidateDNSSECFinalwordsDon'ttrustapublicDNSresolver,useyourownThereain'tnosuchthingasafreelunch(TANSTAAFL)Stubresolversareeasytosetupanduse(e.
g.
Stubby)Don'ttrustyourupstream,encryptasmuchaspossibleDNScontainsimportantinformationAsperRFC7258:"PervasiveMonitoringIsanAttack"Toolsofthetradednsping,dnstracerouteanddnsevalarepartof"dnsdiagtoolkit"onGitHub[4]LookingforfeedbackandideasfromcommunityCombiningwithothertools(e.
g.
RIPEAtlas)toperformmorecomplexbehavioranalysisSuggestion:dnstracerouteinRIPEAtlasprobesQuestionsResources[1]https://github.
com/opendns/public-domain-lists[2]https://gist.
github.
com/farrokhi/0b56ae06813391be9164[3]https://gist.
github.
com/farrokhi/1d9de9df5877aaf9c42fc14412a4b0f8[4]https://github.
com/farrokhi/dnsdiagAlsomyarticlesonRIPELabsdiscussionthesameissue:https://labs.
ripe.
net/Members/babak_farrokhi
- 217.320traceroute相关文档
- http://www.wand.net.nz/scamper/
- 路由器traceroute
- 邻居traceroute
- colorizationtraceroute
- 呼叫traceroute
- 报文traceroute
Virmach（$5.23/年）年付VPS闪购
每每进入第四季度，我们就可以看到各大云服务商的促销力度是一年中最大的。一来是年底的促销节日活动比较多，二来是商家希望最后一个季度冲刺业绩。这不还没有到第四季度，我们看到有些商家已经蠢蠢欲动的开始筹备活动。比如素有低价VPS收割机之称的Virmach商家居然还没有到黑色星期五就有发布黑五促销活动。Virmach 商家有十多个数据中心，价格是便宜的，但是机器稳定性和速度肯定我们也是有数的，要不这么低的...
Hosteons：新上1Gbps带宽KVM主机$21/年起,AMD Ryzen CPU+NVMe高性能主机$24/年起_韩国便宜服务器
我们在去年12月分享过Hosteons新上AMD Ryzen9 3900X CPU及DDR4内存、NVMe硬盘的高性能VPS产品的消息，目前商家再次发布了产品更新信息，暂停新开100M带宽KVM套餐，新订单转而升级为新的Budget KVM VPS(SSD)系列，带宽为1Gbps端口，且配置大幅升级，目前100M带宽仅保留OpenVZ架构产品可新订购，所有原有主机不变，用户一直续费一直可用。Bud...
云如故枣庄高防（49元）大内存2H2G49元8H8G109元
云如故是一家成立于2018年的国内企业IDC服务商，由山东云如故网络科技有限公司运营，IDC ICP ISP CDN VPN IRCS等证件齐全！合法运营销售，主要从事自营高防独立服务器、物理机、VPS、云服务器，虚拟主机等产品销售，适合高防稳定等需求的用户，可用于建站、游戏、商城、steam、APP、小程序、软件、资料存储等等各种个人及企业级用途。机房可封UDP 海外 支持策略定制 双层硬件（傲...
traceroute为你推荐
-
fugedios11contentcss支持ipadCTiosxp如何关闭445端口系统怎么关闭445端口iphone连不上wifi苹果手机无法连接wifi是什么原因css下拉菜单如何用css3做导航栏下拉菜单tcpip上的netbiostcpip上的netbios是什么用的，有安全隐患吗？开启还是关上iphonewifi苹果wifi版和4G版是什么意思，有什么区别吗css选择器CSS中的选择器分几种？