HoerupNet

Description of my personal network

Network diagram

IP Address

The network uses the RFC1918 private IP range 192.168.10.0/24 Theres no local DNS server, all hosts uses upstream ISP dns servers. All hosts get network information from the DHCP server, but some hosts get a fixed address based on MAC address. The dynamic range is 192.168.10.30-100.

Host timon

Timon is the gateway and firewall for the network.

Timon runs the following services

• Firewall
  • Homebuild iptables script with source / destination nat and forward filtering
  • DNAT
    • http->rafiki
    • smtp->rafiki
    • openvpn->rafiki
    • (mldonkey ports)->rafiki
    • 443->rafiki:22
    • VNC->pumba
  • outgoing traffic is SNAT'ed
• Traffic shaping
• Static route: route add -net 192.168.20.0/24 gw 192.168.10.5
• ISC DHCP Server
  • Serves IP addresses as described above
• bind9 DNS server
• SSH server
  • For remote admininistration (only available from internal network)
• TFTP
  • Used For PXE installations.
• SNMP
• cron
  • chkrootkit / rkhunter / ntpdate / logrotate / logwatch (logwatch recipient torben@t-hoerup.dk)
• nullmailer
  • forwarding local-generated mail to rafiki
  • /etc/mailname:timon.t-hoerup.dk
  • /etc/nullmailer/remotes:rafiki.t-hoerup.dk

Host Rafiki

Rafiki is the server

(VPN access is regarded as internal network access)

Unless specified otherwise the daemons listens on all network interfaces.

Rafiki runs

• SSH server
• Apache webserver
  • With mod_php5, mod_dav_svn, mod_python, mod_proxy
  • Hosts all vhosts listed in http://status.t-hoerup.dk/vhosts.php
    • Hosts subversion repository
    • Wiki
    • Pastebin
    • SQL webfrontends
    • Is reverse proxy for those webservices that has their own http engine (such as mldonkey, and tomcat)
• MySQL
• PostgreSQL
• Mldonkey for file download
  • bittorrent
  • donkey
  • overnet
  • basic HTTP
• Squid http proxy
  • port 3128
  • Non caching
  • available to internal network only
• Proftpd
  • File transfer - Only available to internal network (from outside scp/sftp should be used)
• Postfix SMTP MTA
• Dovecot IMAPd
• OpenVPN
  • TUN / UDP based
  • Listens on port 1494
  • Uses subnet 192.168.20.0/24 for tunnels
  • Full access to 192.168.10.0/24 available via vpn
• Smokeping
• Apache Tomcat
• smsdaemon
• MRTG
• webalizer
• cron
  • chkrootkit / rkhunter / ntpdate / logrotate / logwatch (logwatch recipient torben@t-hoerup.dk)
  • torben's crontab
    • 05 */3 * * * /home/torben/bin/getmail-silent
    • 05 05 * * * cp /var/spool/mail/torben /home/torben/Mail/inbox-backup

Access Point

• SSID: hoerup
• Encryption: WPA2-PSK
• Channel: 6