Impossibile connettersi a Tomcat anche se è in esecuzione

Ho provato ad installare Apache Tomcat 5.5 e 6 in 2 modi diversi ( dal sorgente e con apt-get ) su Debian 5 e Debian 6 - nessun successo. Il server è in esecuzione ma non riesco a connettermi ad esso.

netstat -a:

Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State
tcp        0      0 *:ssh                   *:*                     LISTEN
tcp        0      0 `hostname`:ssh          my_home_ip:4318      ESTABLISHED
tcp        0     52 `hostname`:ssh          my_home_ip:remctl    ESTABLISHED
tcp6       0      0 [::]:8009               [::]:*                  LISTEN
tcp6       0      0 [::]:8180               [::]:*                  LISTEN
tcp6       0      0 [::]:ssh                [::]:*                  LISTEN
udp        0      0 *:mdns                  *:*
udp        0      0 *:33059                 *:*
udp6       0      0 [::]:mdns               [::]:*
udp6       0      0 [::]:43829              [::]:*

netstat -tnlp:

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1416/sshd
tcp6       0      0 :::8009                 :::*                    LISTEN      7880/jsvc
tcp6       0      0 :::8180                 :::*                    LISTEN      7880/jsvc
tcp6       0      0 :::22                   :::*                    LISTEN      1416/sshd

ps aux | grep tomcat:

root      7878  0.0  0.0   1984   352 ?        Ss   21:55   0:00 /usr/bin/jsvc -user tomcat55 -cp /usr/share/java/commons-daemon.jar:/usr/share/tomcat5.5/bin/bootstrap.jar -outfile SYSLOG -errfile SYSLOG -pidfile /var/run/tomcat5.5.pid -Djava.awt.headless=true -Xmx128M -Djava.endorsed.dirs=/usr/share/tomcat5.5/common/endorsed -Dcatalina.base=/var/lib/tomcat5.5 -Dcatalina.home=/usr/share/tomcat5.5 -Djava.io.tmpdir=/var/lib/tomcat5.5/temp -Djava.security.manager -Djava.security.policy=/var/lib/tomcat5.5/conf/catalina.policy -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=/var/lib/tomcat5.5/conf/logging.properties org.apache.catalina.startup.Bootstrap
root      7879  0.0  0.0   1984   460 ?        S    21:55   0:00 /usr/bin/jsvc -user tomcat55 -cp /usr/share/java/commons-daemon.jar:/usr/share/tomcat5.5/bin/bootstrap.jar -outfile SYSLOG -errfile SYSLOG -pidfile /var/run/tomcat5.5.pid -Djava.awt.headless=true -Xmx128M -Djava.endorsed.dirs=/usr/share/tomcat5.5/common/endorsed -Dcatalina.base=/var/lib/tomcat5.5 -Dcatalina.home=/usr/share/tomcat5.5 -Djava.io.tmpdir=/var/lib/tomcat5.5/temp -Djava.security.manager -Djava.security.policy=/var/lib/tomcat5.5/conf/catalina.policy -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=/var/lib/tomcat5.5/conf/logging.properties org.apache.catalina.startup.Bootstrap
tomcat55  7880  0.1  5.3 324068 27932 ?        Sl   21:55   0:01 /usr/bin/jsvc -user tomcat55 -cp /usr/share/java/commons-daemon.jar:/usr/share/tomcat5.5/bin/bootstrap.jar -outfile SYSLOG -errfile SYSLOG -pidfile /var/run/tomcat5.5.pid -Djava.awt.headless=true -Xmx128M -Djava.endorsed.dirs=/usr/share/tomcat5.5/common/endorsed -Dcatalina.base=/var/lib/tomcat5.5 -Dcatalina.home=/usr/share/tomcat5.5 -Djava.io.tmpdir=/var/lib/tomcat5.5/temp -Djava.security.manager -Djava.security.policy=/var/lib/tomcat5.5/conf/catalina.policy -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=/var/lib/tomcat5.5/conf/logging.properties org.apache.catalina.startup.Bootstrap
root      8013  0.0  0.0   1716   492 pts/0    R+   22:13   0:00 grep tomcat

nmap controllo porto:

# nmap localhost -p 8180
Starting Nmap 4.62 ( http://nmap.org ) at 2012-03-03
Interesting ports on localhost.localdomain (127.0.0.1):
PORT     STATE  SERVICE
8180/tcp closed unknown
Nmap done: 1 IP address (1 host up) scanned in 0.025 seconds

# nmap localhost -p 8009
Starting Nmap 4.62 ( http://nmap.org ) at 2012-03-03
Interesting ports on localhost.localdomain (127.0.0.1):
PORT     STATE  SERVICE
8009/tcp closed ajp13
Nmap done: 1 IP address (1 host up) scanned in 0.027 seconds

# nmap localhost -p 22
Starting Nmap 4.62 ( http://nmap.org ) at 2012-03-03
Interesting ports on localhost.localdomain (127.0.0.1):
PORT   STATE SERVICE
22/tcp open  ssh
Nmap done: 1 IP address (1 host up) scanned in 0.026 seconds

Registro Catalina:

Mar 3, 2012 9:55:26 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: 
Mar 3, 2012 9:55:26 PM org.apache.coyote.http11.Http11BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-8180
Mar 3, 2012 9:55:26 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 486 ms
Mar 3, 2012 9:55:27 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
Mar 3, 2012 9:55:27 PM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.5
Mar 3, 2012 9:55:27 PM org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
Mar 3, 2012 9:55:27 PM org.apache.coyote.http11.Http11BaseProtocol start
INFO: Starting Coyote HTTP/1.1 on http-8180
Mar 3, 2012 9:55:27 PM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Mar 3, 2012 9:55:27 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/24  config=null
Mar 3, 2012 9:55:27 PM org.apache.catalina.storeconfig.StoreLoader load
INFO: Find registry server-registry.xml at classpath resource
Mar 3, 2012 9:55:27 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 321 ms

java -version:

java version "1.5.0_22"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_22-b03)
Java HotSpot(TM) Client VM (build 1.5.0_22-b03, mixed mode)

Ho anche provato ad assegnare forzatamente Tomcat al mio IP esterno VPS. Ho anche ricevuto l' errore si è verificato durante l'inizializzazione della macchina virtuale Impossibile riservare spazio sufficiente per l'heap di oggetti. errore di volta in volta, ma suppongo che non sia questo il problema poiché Tomcat non risponde comunque.

Ci scusiamo per così tanto testo - ho cercato di essere informativo. Mi aiuti per favore. Grazie in anticipo!

AGGIORNAMENTO Come indicato nella risposta, Tomcat era in ascolto su una porta IPv6. Per cambiarlo, ho dovuto aggiungere una variabile d'ambiente per la macchina JAVA al /etc/profilefile

JAVA_OPTS="-Djava.net.preferIPv4Stack=true"
export JAVA_OPTS

... ricaricare il file: source /etc/profile

... e quindi configura il principale di Tomcat Connectormodificando /etc/tomcat5.5/server.xml(nel mio caso) nel modo seguente:

<Connector port="8080" maxHttpHeaderSize="8192"
    maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
    enableLookups="false" redirectPort="8443" acceptCount="100"
    connectionTimeout="20000" disableUploadTimeout="true" address="0.0.0.0" />

Notare ciò address="0.0.0.0"che dice a Tomcat di collegarsi a un indirizzo IPv4.

Grazie per il tuo tempo e buona giornata a tutti.

Tomcat sembra essere in ascolto solo su IPv6 loopback indirizzo, ::1.

Ha un odore simile a un problema del firewall: prova ad aprire le regole pertinenti nel tuo firewall (considera solo di lasciare tutto dentro / fuori lo, non ho mai visto un caso legittimo per limitare il traffico di loopback).