From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <45618E9F.70508@stc.donpac.ru> Date: Mon, 20 Nov 2006 14:16:47 +0300 From: Eugene Prokopiev User-Agent: Mozilla/5.0 (X11; U; Linux i686; ru-RU; rv:1.7.2) Gecko/20040808 X-Accept-Language: ru-ru, ru MIME-Version: 1.0 To: Community@lists.altlinux.org Content-Type: text/plain; charset=KOI8-R; format=flowed X-DSPAM-Result: Innocent X-DSPAM-Processed: Mon Nov 20 14:18:30 2006 X-DSPAM-Confidence: 1.0000 X-DSPAM-Probability: 0.0023 X-DSPAM-Signature: 77,45618f06259021465816345 X-DSPAM-Factors: 27, but, 0.40000, Received*from+192.168.20.109, 0.40000, Received*Postfix+with, 0.40000, made, 0.40000, some+specific, 0.40000, establish+a, 0.40000, address+is, 0.40000, otherwise+it, 0.40000, Received*for+Community, 0.40000, С, 0.40000, Content-Type*text+plain, 0.40000, имеется, 0.40000, of, 0.40000, работает+но, 0.40000, User-Agent*ru-RU+rv, 0.40000, Received*ESMTP, 0.40000, requests, 0.40000, the+implementation, 0.40000, Content-Transfer-Encoding*8bit, 0.40000, will+use, 0.40000, Date*16, 0.40000, Date*16+47, 0.40000, will+try, 0.40000, Date*Mon, 0.40000, User-Agent*X11+U, 0.40000, use, 0.40000, be+accessible, 0.40000 Content-Transfer-Encoding: quoted-printable Subject: [Comm] =?koi8-r?b?cGluZyDJINDSwdfBIMTP09TV0ME=?= X-BeenThere: community@lists.altlinux.org X-Mailman-Version: 2.1.9rc1 Precedence: list Reply-To: ALT Linux Community List-Id: ALT Linux Community List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Nov 2006 11:18:46 -0000 Archived-At: List-Archive: List-Post: =FA=C4=D2=C1=D7=D3=D4=D7=D5=CA=D4=C5! =F7 java =C9=CD=C5=C5=D4=D3=D1 =CD=C5=D4=CF=C4 InetAddress.isReachable(),= =D7 =C4=CF=CB=D5=CD=C5=CE=D4=C1=C3=C9=C9 =CE=C1=20 =CB=CF=D4=CF=D2=D9=CA =CE=C1=D0=C9=D3=C1=CE=CF =D3=CC=C5=C4=D5=C0=DD=C5=C5= : Test whether that address is reachable. Best effort is made by the=20 implementation to try to reach the host, but firewalls and server=20 configuration may block requests resulting in a unreachable status while=20 some specific ports may be accessible. A typical implementation will use=20 ICMP ECHO REQUESTs if the privilege can be obtained, otherwise it will=20 try to establish a TCP connection on port 7 (Echo) of the destination hos= t. =F7 tcpdump =D1 =D7=C9=D6=D5, =DE=D4=CF =C9=D3=D0=CF=CC=D8=DA=D5=C5=D4=D3= =D1 =C9=CD=C5=CE=CE=CF =D7=D4=CF=D2=CF=CA =CD=C5=D4=CF=C4, =D3=CF=CF=D4=D7= =C5=D4=D3=D4=D7=C5=CE=CE=CF=20 =CE=C1=D0=D2=C1=DB=C9=D7=C1=C5=D4=D3=D1 =D7=D9=D7=CF=C4, =DE=D4=CF =D0=D2= =C1=D7 =CE=C1 ICMP ECHO REQUEST =D5 =D0=D2=C9=CC=CF=D6=C5=CE=C9=D1 =CE=C5= =D4.=20 =F5=D4=C9=CC=C9=D4=C1 ping =D2=C1=C2=CF=D4=C1=C5=D4, =CE=CF =D7=D3=D0=CF=CD= =C9=CE=C1=C0, =DE=D4=CF =D2=C1=C2=CF=D4=C1=C5=D4 =CF=CE=C1 =D7 =DE=D2=D5=D4= =C5, =D0=CF=DC=D4=CF=CD=D5=20 =D0=CF=C4=CF=DA=D2=C5=CE=C9=C5 =CE=C1 =CE=C5=C4=CF=D3=D4=C1=D4=CF=DE=CE=D9= =C5 =D0=D2=C1=D7=C1 =D0=CF=C4=CB=D2=C5=D0=CC=D1=C0=D4=D3=D1 ... =F7 =D0=D2=C1=D7=C1=C8 =CC=C9 =C4=C5=CC=CF? =E9 =C5=D3=CC=C9 =C4=C1, =CB=C1= =CB =C9 =CB=CF=CD=D5 =DC=D4=C9 =D0=D2=C1=D7=C1 =C4=C1=D4=D8? --=20 =F3 =D5=D7=C1=D6=C5=CE=C9=C5=CD, =F0=D2=CF=CB=CF=D0=D8=C5=D7 =E5=D7=C7=C5= =CE=C9=CA