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about

Felix J. Ogris' private homepage: some stuff about homemade software, FreeBSD, Linux, computers, and hacking in general.

Somewhat more nosy? Mailto www@ogris.de.

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IPv6 test pages

• v6only.ogris.net which resolves to and is reachable only by an IPv6 address
• purev6.ogris.net which resolves to and is reachable only by an IPv6 address, and whose authorative nameserver is reachable only by IPv6

recent news

[2020-01-23] If you compile ftp6proxy version 4 with support for netgraph along with ipfw, then it makes use of Capsicum.

[2020-01-17] You can now deploy ftp6proxy version 3 in a pure ipfw environment without pf. By default, it chroot's itself to /var/empty, has been prepared to support Capsicum, and allows you to specify a syslog facility.

[2020-01-12] New version of check_tvh.py supports the commandline option -f or --force in order to restart webcamd and Tvheadend forcefully.

[2020-12-31] New version of zfs-snap accepts a frequency per filesystem or volume, which optionally indicates the time that must have passed since the last snapshot was taken.

[2020-12-24]

• New version of kvmlib fixes a bug which prevented you from changing cdrom media
• rrdquery.pl now supports trivial aggregates (avg(), count(), min(), max(), and sum()).

[2020-12-05] Updated howto Upgrading PostgreSQL with pg_upgrade on FreeBSD now mounts devfs inside the jail.

[2020-08-15] grapheqd version 4 fixes a bug that became apparent on a MIPS box running Linux (thread stack size too small).

[2020-07-22] grapheqd version 3 comes with support for OSS on FreeBSD, fading to immitate afterglow, a client/server mode, and several bux fixes.

[2020-07-19] grapheqd version 2 comes with slowly decreasing peak values, improved error handling, and revised logging.

[2020-07-16] grapheqd displays the frequency spectrum of an audio signal via its HTML5 webpage or ASCII interface.

[2020-07-10] rrdquery.pl retrieves one datasource from an RRD (round robin database) and optionally filters its values.

[2020-07-07] Building a digital video recorder with FreeBSD.

[2020-04-05] New version of kvmlib does not connect all network interfaces to one virtual hub anymore, but makes use of the netdev and device commandline options of qemu in order to connect each virtual network card only to its assigned tap interface on the host.

[2020-03-15] privatebinc.py is a simple Python client for PrivateBin.

[2020-02-23]

• ldif2xml.pl converts LDIF to XML
• From the (s)hell one-liners department: Print the names of all revoked certificates (invoke from inside the pki directory of an Easy-RSA CA):

  openssl crl -noout -text -in crl.pem | grep "Serial Number: " | while read L; do serial="${L#*: }"; openssl x509 -subject -nocert -in "certs_by_serial/$serial.pem" 2>/dev/null || openssl x509 -subject -nocert -in "revoked/certs_by_serial/$serial.crt" 2>/dev/null || echo "ERROR: Cannot find certificate $serial" >&2; done
  

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