How to clear cached domain passwords (kerberos tickets). Fixes issue where OSX connects to file share using incorrect account. Use terminal command 'kdestroy' to delete all, or delete individually using Keychain Access and opening 'Ticket Viewer'.
osx networking tools tutorial tips referenceSwitch model selection flowchart.
tools tutorial ciscoGood explanation of SSL.
work tutorial ssl helpdeskGNS3 is a graphical network simulator that allows simulation of complex networks. GNS3 is an excellent complementary tool to real labs for network engineers, administrators and people wanting to study for certifications such as Cisco CCNA, CCNP, CCIP and CCIE as well as Juniper JNCIA, JNCIS and JNCIE.
networks networking tools software simulator virtualization opensource cisco sysadmin networkCollection of cheat sheets.
tools cheatsheets programming development php html5 api css reference cheatsheetLinux server troubleshooting tips.
devops troubleshooting troubleshoot server debug debugging sysadmin linux unix reference