Validator


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Create Date 2019-10-21
Last Updated 2019-10-21
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Narrow down issues with Host validation (InetAddress.isReachable())

 

[rms@tr005buece12 tmp]$ ./test.sh tr005buwls11.ddc.teliasonera.net
OK
 
[rms@tr005buwls11 ~]$ sudo tcpdump -nn -v -i eth0 host tr005buece12 and port not 22
tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
14:40:57.566469 IP (tos 0x0, ttl 64, id 64840, offset 0, flags [DF], proto TCP (6), length 60)
    131.116.167.11.55766 > 131.116.167.13.7: Flags [S], cksum 0xaf64 (correct), seq 562514241, win 14600, options [mss 1460,sackOK,TS val 300069897 ecr 0,nop,wscale 7], length 0
14:40:57.566522 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto TCP (6), length 40)
    131.116.167.13.7 > 131.116.167.11.55766: Flags [R.], cksum 0x1628 (correct), seq 0, ack 562514242, win 0, length 0
Validator

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