macのtarcerouteでUDPを出す方法
調べていると下記コマンドで出せると書いてあったが
traceroute -U -p ポート番号 [ホスト名 or IPアドレス]
manを見ると存在しない
SYNOPSIS traceroute [-adeFISdNnrvx] [-A as_server] [-f first_ttl] [-g gateway] [-i iface] [-M first_ttl] [-m max_ttl] [-P proto] [-p port] [-q nqueries] [-s src_addr] [-t tos] [-w waittime] [-z pausemsecs] host [packetsize]
その代わり -Pがあって
-P proto
Send packets of specified IP protocol. The
currently supported protocols are: UDP ,
TCP , GRE and ICMP Other protocols may also
be specified (either by name or by number),
though traceroute does not implement any
special knowledge of their packet formats.
This option is useful for determining which
router along a path may be blocking packets
based on IP protocol number. But see BUGS
below.
と書いてある
But see BUGS below.
ってなんだろ、、
BUGS When using protocols other than UDP, functionality is reduced. In particular, the last packet will often appear to be lost, because even though it reaches the des- tination host, there's no way to know that because no ICMP message is sent back. In the TCP case, traceroute should listen for a RST from the destination host (or an intermediate router that's filtering packets), but this is not implemented yet.
The AS number capability reports information that may sometimes be inaccurate due
to discrepancies between the contents of the routing database server and the cur-
rent state of the Internet.
MACでやる場合は
traceroute -P UDP -p ポート番号 [ホスト名 or IPアドレス]
かな
そもそもデフォルトUDPだから
traceroute -p ポート番号 [ホスト名 or IPアドレス]
だけでよかったかもしれない
