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UPDATE: was a misleading firewall configuration of the IT infrastructure that was blocking the connection with port 80. Thanks @eskimo for allow me to understand a new way fo troubleshoot with the nc command!
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Thanks @eskimo I get this error: nc -v timestamp.apple.com 80 nc: connectx to timestamp.apple.com port 80 (tcp) failed: Operation timed out Note: the same error doesn't occur on a different machine on a different network Do you think that there is strange configuration of the IT infrastructure causing the issue? Or may i fix it directly in the macOS machine that runs the command?
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This is the result i get with the following command codesign -dv --verbose=4 javaExecutable=Contents/Home/jre/bin/javaIdentifier=net.java.openjdk.cmdFormat=Mach-O thin (x86_64)CodeDirectory v=20200 size=584 flags=0x0(none) hashes=23+2 location=embeddedLibrary validation warning=OS X SDK version before 10.9 does not support Library ValidationVersionPlatform=1VersionMin=657152VersionSDK=657408Hash type=sha1 size=20CandidateCDHash sha1=bf12d6542ff2df3b6af01d0c38013fdbf1eb3ba5CandidateCDHashFull sha1=bf12d6542ff2df3b6af01d0c38013fdbf1eb3ba5Hash choices=sha1CMSDigest=c37cad64703ae4ce6760fae8764a521ab1c8d17dd00b6f4956354128343a68aeCMSDigestType=2Page size=4096CDHash=bf12d6542ff2df3b6af01d0c38013fdbf1eb3ba5Signature size=8577Authority=Developer ID Application: Oracle America, Inc. (VB5E2TV963)Authority=Developer ID Certification AuthorityAuthority=Apple Root CATimestamp=29 Mar 2018 at 01:06:53Info.plist entries=4TeamIdentifier=VB5E2TV963Sealed Resources=noneInternal requirements count=1 size=180