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| comp.protocols.tcp-ip | TCP and IP network protocols. | 14,669 messages |
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| Message 13,686 of 14,669 |
| D. Stussy to All |
| TCP flags - illegal combination: SYN+FIN |
| 21 Nov 10 18:00:09 |
From: spam+newsgroups@bde-arc.ampr.org Why is SYN+FIN considered illegal by most? RFC 793 doesn't outlaw it, and RFC 1644 even demonstrates its usefulness (when accompanied by data), yet many if not most (but not quite all) web pages that discuss "illegal TCP flag" combinations for the purposes of implementing firewalls include this combination as illegal. Why? --- SoupGate-Win32 v1.05 * Origin: you cannot sedate... all the things you hate (1:229/2) |
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