These are all excellent tools for a dedicated knowledgeable network security person to use. The most important element being the dedicated knowledgeable network security person.
--p -----Original Message----- From: NANOG [mailto:nanog-boun...@nanog.org] On Behalf Of Jimmy Hess Sent: Saturday, February 14, 2015 12:57 PM To: Randy Bush Cc: North American Network Operators' Group Subject: [EXTERNAL]Re: Intrusion Detection recommendations On Sat, Feb 14, 2015 at 2:38 AM, Randy Bush <ra...@psg.com> wrote: Bro, SNORT, SGUIL, Tcpdump, and Wireshark are some nice tools. By itself, a single install of Snort/Bro is not necessarily a complete IDS, as it cannot inspect the contents of outgoing SSL sessions, so there can still be Javascript/attacks against the browser, or SQL injection attempts encapsulated in the encrypted tunnels; I am not aware of an open source tool to help you with SSH/SSL interception/SSL decryption for implementation of network-based IDS. You also need a hand-crafted rule for each threat that you want Snort to identify... Most likely this entails making decisions about what commercial ruleset(s) you want to use and then buying the appropriate subscriptions. > if you were comfortable enough with freebsd to use it as a firewall, > you can run your traffic through, or mirror it to, a freebsd box running > https://www.bro.org/ or > https://www.snort.org/ > two quite reasonable and powerful open source systems > > randy -- -JH
