Firewalls don't care about internet standards. I get an immediate response to a 1400 byte ping:

06:26:15.154205 IP 10.0.0.13 > perlmonks.pair.com: ICMP echo request, 
+id 46849, seq 0, length 1408
06:26:15.232493 IP perlmonks.pair.com > 10.0.0.13: ICMP echo reply, id
+ 46849, seq 0, length 1408

[download]

And no response to a fragmented 1500 byte ping:

06:26:32.986529 IP 10.0.0.13 > perlmonks.pair.com: ICMP echo request, 
+id 47105, seq 0, length 1480
06:26:32.986540 IP 10.0.0.13 > perlmonks.pair.com: icmp

[download]

BTW, I get a "time exceeded" message if I set the TTL to 16, but nothing if I set it to 17. It looks like Pair.com's border firewall is eating ICMPs.

06:34:53.777278 IP 10.0.0.13 > perlmonks.pair.com: ICMP echo request, 
+id 59649, seq 0, length 1480
06:34:53.777287 IP 10.0.0.13 > perlmonks.pair.com: icmp
06:34:53.862597 IP continental.car1.pittsburgh3.level3.net > 10.0.0.13
+: ICMP time exceeded in-transit, length 36

[download]

(And yes, I know ping doesn't use UDP.)

In reply to Re^4: Getting packets over 1500 Bytes pcap. by no_slogan
in thread Getting packets over 1500 Bytes pcap. by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.