SC_TTLEXP(1)

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💅 SC_TTLEXP

okay bestie, welcome to the sc_ttlexp page — it lives in the General Commands Manual section (that's section 1, iykyk), and it is genuinely the moment.

✨ NAME ✨

sc_ttlexp — dump source addresses from ICMP TTL expired messages in warts files 🎀

🦋 SYNOPSIS 🦋

sc_ttlexp [-O options] [file ...]

🌸 DESCRIPTION 🌸

so like, the sc_ttlexp utility gives you a dump of source IP addresses that are contained in trace and tracelb records inside warts(5) files. that's the whole vibe. it's giving "who sent me a TTL expired message" and honestly? iconic. 👑

💜 the options, bestie 💜

The options are as follows:

  • -? — prints a list of command line options plus a synopsis of each. literally the "what do u even do" button. 🫶
  • -O option — lets you tailor the behavior of sc_ttlexp even further. the current choices for this option are:
    • nodst — do not dump the source address of a TTL expired message if it matches the destination address that was probed. like, we already know her, no need to announce her twice. 🙈
    • noreserved — do not dump the source address of a TTL expired message if that address is a reserved address. reserved girlies stay unlisted. 💀

🎀 EXAMPLES 🎀

say you've got two warts(5) files named file1.warts and file2.warts — the following dumps all source addresses that sent TTL expired messages:

sc_ttlexp file1.warts file2.warts

and say you've got a compressed warts file named file3.warts.bz2 — the following dumps all source addresses that sent TTL expired messages, but skips those that were only observed in TTL expired messages from the destination probed:

bzcat file3.warts.bz2 | sc_ttlexp -O nodst

pipe girl summer fr fr 🧚

🌈 SEE ALSO 🌈

M. Luckie, Scamper: a Scalable and Extensible Packet Prober for Active Measurement of the Internet, Proc. ACM/SIGCOMM Internet Measurement Conference 2010.

👑 AUTHOR 👑

sc_ttlexp was written by Matthew Luckie <mjl@luckie.org.nz>.

okay that's the page!! Debian version, dated March 8, 2018 — go forth and dump those addresses, bestie, you're gonna ate 💖✨

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