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Groups > comp.lang.java.programmer > #10582
| From | glen herrmannsfeldt <gah@ugcs.caltech.edu> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Ping from JAVA to IP Address |
| Date | 2011-12-07 08:59 +0000 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <jbn9te$dab$2@speranza.aioe.org> (permalink) |
| References | (3 earlier) <0aec9e49-b7d2-4afd-9f8f-07a2d07392ca@k13g2000prg.googlegroups.com> <26b57282-aa91-4116-884c-92af6ae1f911@k38g2000pro.googlegroups.com> <j86jl3$tvd$1@dont-email.me> <wlhabwd73x60$.1qs46lbqszfoq.dlg@40tude.net> <4eb6ee10$0$290$14726298@news.sunsite.dk> |
Arne Vajhøj <arne@vajhoej.dk> wrote:
(snip)
> Well - your post was far from complete.
> Raw sockets and ICMP are not exposed to the programmer in Java.
> But that does not prevent something inside Java to use ICMP.
As far as I know, at least for unix-like system, you need to
be setuid root to do raw sockets or ICMP. Running java as
setuid root doesn't sound great for security.
I would think that it could do something like system("ping")
to run the ping program (which is setuid root).
> The isReachable method will in fact attempt a ping on *nix.
> On Windows it uses the echo service.
> (it will also fallback to echo on *nix if no privilege to call ping)
-- glen
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Ping from JAVA to IP Address sahm <sahm007@gmail.com> - 2011-10-24 11:01 -0700
Re: Ping from JAVA to IP Address Robert Klemme <shortcutter@googlemail.com> - 2011-10-24 20:26 +0200
Re: Ping from JAVA to IP Address markspace <-@.> - 2011-10-24 14:52 -0700
Re: Ping from JAVA to IP Address sahm <sahm007@gmail.com> - 2011-10-24 22:31 -0700
Re: Ping from JAVA to IP Address sahm <sahm007@gmail.com> - 2011-10-25 01:56 -0700
Re: Ping from JAVA to IP Address Screamin Lord Byron <scre@min.dot> - 2011-10-25 11:57 +0200
Re: Ping from JAVA to IP Address markspace <-@.> - 2011-10-25 08:12 -0700
Re: Ping from JAVA to IP Address Screamin Lord Byron <scre@min.dot> - 2011-10-25 22:13 +0200
Re: Ping from JAVA to IP Address markspace <-@.> - 2011-10-25 16:02 -0700
Re: Ping from JAVA to IP Address Screamin Lord Byron <scre@min.dot> - 2011-10-26 13:16 +0200
Re: Ping from JAVA to IP Address Arne Vajhøj <arne@vajhoej.dk> - 2011-11-06 15:29 -0500
Re: Ping from JAVA to IP Address glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2011-12-07 08:59 +0000
Re: Ping from JAVA to IP Address Roedy Green <see_website@mindprod.com.invalid> - 2011-10-25 21:28 -0700
Re: Ping from JAVA to IP Address Arne Vajhøj <arne@vajhoej.dk> - 2011-11-06 15:36 -0500
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