How to provide DNS server addresses to IPv6 clients using Router Announcements.
Tag: ubuntu
Posts related to Ubuntu/Debian Linux
Setting Up BackupPC on Windows
Back up Windows PCs and Laptops using BackuPC. Includes installing rsycnd on Windows.
Setting Up BackupPC on Ubuntu
Set up a BackupPC Server on Ubuntu. Includes configuration of Linux and OpenWrt clients using rsyncd.
Email Logins for Dovecot and Exim
Configuring a common login for Dovecot IMAP(s) and Exim SMTP. Also Exim Submission port and TLS (SSL) configuration.
Implementing IPv6 Part 2
Replacing 6to4 tunnel with 6in4. IPv6 enabling Bind, Exim, SPF, Squid, and updating Databases containing IP addresses.
Blocking Spam with Exim
Spam blocking techniques for Exim. Uses delays to cause Spambots to fail. Notes on bulk and automated mail servers.
Transparent Squid Proxy
Over the holidays, I had a user experience and attempted browser hijacking. It appeared to have bypassed my squid proxy. My updated configuration now sends all web access via squid. The old firewall rules, that allowed direct access to the Internet, have been replaced with a transparent Squid proxy. This runs on my existing Squid Proxy using another port.
Manual networking for KVM
I found the networking configured by libvirt (KVM) did not allow me to firewall the network as I desired. I use Shorewall for firewalling, and DNSMasq for internal DNS and DHCP. After a little experimentation, I found that I could configure Ubuntu to create the network. This allows me to get a reliable firewall configuration with a… Continue reading Manual networking for KVM
Remote Desktops with VNC and RDP
I find it useful to have a remote desktop to my Ubuntu systems. On secure connections, I have been using VNC via xinetd. Connections with xrdp where possible, but it wasn’t launching the desktop for the connection. For secure terminal connections, I stick with ssh. All these connections have a login at the start of the… Continue reading Remote Desktops with VNC and RDP
Implementing DKIM with Exim
This article was updated in February 2014 to reflect changes in policy and reporting options. The earlier ADSP (Author Domain Signing Practices) information has been removed. DomainKeys Identified Mail (DKIM) provides a method to confirm the origin of an e-mail. DKIM also provides some protection against tampering. Unlike SPF, this validation applies to the contents… Continue reading Implementing DKIM with Exim