TCP timestamps [archive muab kev tiv thaiv tiv thaiv cov lej sib txuas [archive. … Txhawm rau tiv thaiv cov ntaub ntawv no tawm mus rau tus yeeb ncuab, nws raug nquahu kom lov tes taw TCP timestamps ntawm txhua qhov kev khiav hauj lwm hauv kev siv. Cov ntaub ntawv tsawg dua muaj rau cov neeg tawm tsam, qhov kev ruaj ntseg zoo dua.
TCP timestamp vulnerability yog dab tsi?
Vulnerabilities nyob rau hauv TCP Timestamps Retrieval yog a Tsawg txaus ntshai qhov tsis zoo uas yog ib qho ntawm feem ntau pom nyob rau hauv tes hauj lwm thoob ntiaj teb. … Tus tswv tsev tej thaj chaw deb siv TCP timestamps, raws li tau hais los ntawm RFC1323. Ib qho kev mob tshwm sim ntawm qhov tshwj xeeb no yog tias lub sijhawm ua haujlwm ntawm cov chaw taws teeb tswj tau qee zaum raug suav.
TCP timestamp yog dab tsi?
TCP Timestamp yog dab tsi? Cov ntawv teev sijhawm xaiv hauv TCP ua kom cov ntsiab lus kawg kom ntsuas qhov ntsuas tam sim no ntawm lub sijhawm mus ncig (RTT) ntawm lub network ntawm lawv. Tus nqi no pab txhua pawg TCP los teeb tsa thiab kho nws lub sijhawm xa rov qab. Muaj lwm yam txiaj ntsig, tab sis kev ntsuas RTT yog qhov loj.
Kuv yuav ua li cas kaw TCP timestamp teb?
Disable TCP timestamp teb ntawm Linux
- Txhim kho tus nqi ntawm net. ipv4 ua. tcp_timestamps rau 0, khiav sysctl -w net. ipv4 ua. tcp_timestamps=0 command.
- Add the net. ipv4 ua. tcp_timestamps=0 tus nqi hauv lub neej ntawd sysctl. conf file.
ICMP timestamp teb yog dab tsi?
Daim ntawv teev sijhawm ICMPteb muaj cov chaw taws teeb tswj hnub tim thiab sijhawm. Cov ntaub ntawv no tuaj yeem siv theoretically siv tawm tsam qee lub tshuab siv los siv lub sijhawm tsis muaj zog-raws li cov lej tsim hluav taws xob hauv lwm cov kev pabcuam. … ICMP cov ntaub ntawv xws li (1) netmask thiab (2) timestamp raug tso cai los ntawm tus tswv tsev.
