Unix Hosts

1
Unix Hosts

• Rangers.ipv6.unl.edu
• Dale Finkelson

2
OS

• Rangers uses Freebsd 4.4.
• Has the advantage of having the Kame stack
  compiled into the Kernel.
• I choose to use two names for the machine.
• One resolving to a v6 address
• One resolving to a v4 host
• In the rc.conf file I used the name
  rangers.unl.edu rather then the v6 name.
• Potentially some programs that reference that
  file may not recognize a name that resolves to a
  v6 address
• Most other Unix variants have v6 included.

3
Applications

• Essential to making v6 useful is porting
  applications.
• Examples of necessary applications would be
• Bind
• Sendmail
• Mail readers
• Web servers
• Web clients
• News servers
• News clients
• No doubt there are others we could list.

4
Applications

• What is available?
• Bind
• Apache
• Mozilla
• Sendmail
• NNTP
• By and large there are no particular issues in
  getting these to work.

5
Applications

• For Sendmail
• In the M4 file you need to add the following two
  lines.
• DAEMON_OPTIONS(NameMTA-v4, Familyinet)
• DAEMON_OPTIONS(NameMTA-v6, Familyinet6)

6
Goal

• When we look at workstations the goal is to
  create dual-stack machines.
• For servers it would be ideal if content was
  available for either v4 or v6 clients.
• What would be really nice is some interesting
  peer-to-peer application that ran on v6.
• Something students would like.

7
Traffic - the NNTP Experiment

• Usenet makes an excellent IPv6 "foundation"
  application, and INN, the traditional open source
  news server supported by the ISC, has IPv6
  support in the INN -CURRENT development tree
  (ftp//ftp.isc.org/isc/inn/snapshots/) Tin
  supports v6 reading (http//www.tin.org)
• Building INN is covered in detail in the INSTALL
  file included with the source including support
  for IPv6 is a simple matter of including the line
  --enable-ipv6 as part of the configure time
  options. See also doc/IPv6-info (included with
  the source).
• IPv6 addresses show up explicitly in three
  configuration files
• incoming.conf - who can transfer articles to you
• innfeed.conf - where you are feeding articles
• readers.conf - who can read/post from your server
• All work the way you'd expect, and can accept
  either host names or IPv6 colon-formatted
  addresses (if you use colon-formatted raw
  addresses, enclose them in double quotes due to
  the use of colons as punctuation in the
  innfeed.conf file).
• If folks need help finding an IPv6 Usenet peer,
  they should feel free to contact Joe St Sauver
  (joe_at_oregon.uoregon.edu). He will usually be
  willing to provide IPv6 Usenet peering, or play
  "matchmaker" to help people find other IPv6
  Usenet peers.

8
Assignments

• We would like to see
• Web services working
• Nameservice working
• Mail working
• Ssh
• Ipsec
• Anything else you can think of
• Have fun