Transcription of SANS Institute
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Interested in learning moreabout network auditing? sans InstituteSecurity Consensus Operational Readiness EvaluationThis checklist is from the SCORE Checklist Project. Reposting is not permited without express, written ChecklistCopyright sans InstituteAuthor Retains Full RightsPage 1 of 6 Firewall ChecklistPrepared by: Krishni NaiduReferences:Top Ten Blocking Recommendations Using Cisco ACL s Securing the Perimeter withCisco IOS 12 Routers, Scott Winters, August 2000 GIAC Firewall Practical: Implementation of Firewall Filters, Rick Thompson, August2000 Application Layer Firewalls vs Network Layer Firewalls: Which is the better choice,Keith D. Maxon, August 2000 Top Ten Blocking Recommendations using Ipchains, Paul Tiedemann, August 2000 What is Egress filtering and how can I implement it?
1 day ago · 11. Port restrictions The following ports should blocked: Service Port Type Port Number DNS Zone Transfers except from external secondary DNS servers TCP 53 TFTP Daemon UDP 69 Link TCP 87 SUN RPC TCP & UDP 111 BSD UNIX TCP 512 Ð 514 LPD TCP 515 UUCPD TCP 540 Open Windows TCP & UDP 2000 NFS TCP & UDP 2049 X Windows …
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