Disable IPv6 in Debian Lenny Linux

And here is how to do this:

• At first the stuff every web site is telling us: In /etc/modprobe.d/aliases replace/add the following mappings: alias net-pf-10 off alias ipv6 off (I found this at fak3r.com)
• If you are using a firewall script which loads all available module before setting up the firewall, add the following lines to /etc/modprobe.d/aliases: alias ip6_queue.ko off alias ip6table_filter.ko off alias ip6table_mangle.ko off alias ip6table_raw.ko off alias ip6table_security.ko off alias ip6_tables.ko off alias ip6t_ah.ko off alias ip6t_eui64.ko off alias ip6t_frag.ko off alias ip6t_hbh.ko off alias ip6t_hl.ko off alias ip6t_HL.ko off alias ip6t_ipv6header.ko off alias ip6t_LOG.ko off alias ip6t_mh.ko off alias ip6t_REJECT.ko off alias ip6t_rt.ko off alias nf_conntrack_ipv6.ko off You can do this by executing: for module in `ls /lib/modules/YOUR-KERNEL-VERSION/kernel/net/ipv6/netfilter/`; do echo "alias $module off" >> /etc/modprobe.d/aliases; done

Hope this helps :-)

Apache2 httpd, Apache Tomcat6 and rewrite problems

While configuring a Apache2 as Proxy for a bunch of Tomcats behind I found many postings that says "Use mod_rewrite and this set of rules" or "you have to use ajp and mod_jk". After some rtfm I found out that setting up a Apache2 httpd with multiple Apache Tomcats behind mapped using mod_proxy is pretty simple and straight forward. here is the HowTo:
1. Add a site to the apache2:

cat /etc/apache2/sites-enabled/artifactory
<Location /artifactory/>
    ProxyPass http://127.0.0.1:8100/artifactory/
    Order deny,allow
    Allow from all
</Location>

2. Enable mod_proxy by creating the following links (ln -s target) in /etc/apache2/mods-enabled/

proxy.conf -> ../mods-available/proxy.conf
proxy_http.load -> ../mods-available/proxy_http.load
proxy.load -> ../mods-available/proxy.load

3. Modify the content of /etc/apache2/mods-enabled/proxy.conf :

<IfModule mod_proxy.c>
ProxyRequests Off

<Proxy *>
    Order deny,allow
    Allow from all
</Proxy>

</IfModule>

4. reload the apache2 server:

/etc/init.d/apache2 reload

5. modify $TOMCAT_HOME/conf/server.xml
Change from:

<Connector port="8100" protocol="HTTP/1.1"
connectionTimeout="20000" redirectPort="8443" />

to

<Connector port="8100" protocol="HTTP/1.1"
connectionTimeout="20000" redirectPort="8443"
proxyName="YourDomain.YourTLD" proxyPort="80"/>