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• Data and Technology

  Posted on April 9th, 2008

  Written by cliff

  Tags

  esx. esx server, firewall esxcfg-firewall, iptables, nptdate, ntp, ntpClient, ntpd, outbound UDP, port 123, time, time servr, udp, vmware

  VMware ESX 3.5 ntpdate strangeness

  

  We just noticed that the time was very far off on our sparkly new VMware EXS 3.5 server. When I went to run ntpdate to bring it up to sync, I was suprised to find that it could not make a connection to the time server because outbound UDP 123 traffic was blocked by the [...]

• Data and Technology

  Posted on March 14th, 2008

  Written by cliff

  Tags

  datagram pinwheel, firewall, mac, name service, netbios, nmb, osx, smb, smbclient, tcp, udp

  When Mac OSX SMB Connections Fail

  

  Earlier today I had a problem with some Macs that could not establish SMB connections to our Windows File Server. There was no quick error, so the problem really “felt” like a firewall issue but strangely I was able to make a CLI connection to the file server using smbclient:

  smbclient //server/share -U domain/username
  Password:*******
  Domain=[DOMAIN] OS=[Windows Server [...]

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