July 2012 Archives
10-07-2012 12:44
Dovecot and fail2ban on CentOS 6
I have fail2ban on my CentOS 6 server. It wasn't a smooth install and I had to fiddle with some configs to get it all working, but it does. One thing I noticed in my logwatch was pop3 failed authentications where getting into the hundreds per IP address. With maxretry set to 10, this should not be possible. After painstaking troubleshooting, I found to realise that the IP I was looking for, as an example was indeed in the mail logs for a failed auth, but only when trying IMAP. One can only assume pop3 was tried first and then IMAP and at that point the IP was banned. Looking further and testing with telnet from a remote client, pop3 fails authentications were not being logged at all.
Answer: you need to set auth_verbose=yes in dovecot.conf
09-07-2012 13:57
Hauppauge WinTV PVR-350 on OpenSuSe 12.1
Just a quick note on getting the Hauppauge WinTV PVR-350 working on OpenSuse 12.1.
[ 7.719978] ivtv: Start initialization, version 1.4.3 [ 7.776334] ivtv0: Initializing card 0 [ 7.776364] ivtv0: Autodetected Hauppauge card (cx23415 based) [ 7.776465] ivtv 0000:04:07.0: PCI INT A -> GSI 21 (level, low) -> IRQ 21 [ 7.776499] ivtv0: Unreasonably low latency timer, setting to 64 (was 32) [ 7.833642] tveeprom 0-0050: Hauppauge model 48139, rev K2B7, serial# 8654550 [ 7.833672] tveeprom 0-0050: tuner model is Philips FM1216ME MK5 (idx 117, type 38) [ 7.833699] tveeprom 0-0050: TV standards PAL(B/G) PAL(I) SECAM(L/L') PAL(D/D1/K) (eeprom 0x74) [ 7.833749] tveeprom 0-0050: audio processor is MSP4418 (idx 25) [ 7.833775] tveeprom 0-0050: decoder processor is SAA7115 (idx 19) [ 7.833801] tveeprom 0-0050: has radio, has IR receiver, has no IR transmitter [ 7.833827] ivtv0: Autodetected Hauppauge WinTV PVR-350 [ 7.858471] saa7115 0-0021: saa7115 found (1f7115d0e100000) @ 0x42 (ivtv i2c driver #0) [ 7.997481] saa7127 0-0044: saa7129 found @ 0x88 (ivtv i2c driver #0) [ 8.033966] i2c-core: driver [msp3400] using legacy suspend method [ 8.034001] i2c-core: driver [msp3400] using legacy resume method [ 8.045568] msp3400 0-0040: MSP4418G-B3 found @ 0x80 (ivtv i2c driver #0) [ 8.045598] msp3400 0-0040: msp3400 supports nicam and radio, mode is autodetect and autoselect [ 8.046643] i2c-core: driver [tuner] using legacy suspend method [ 8.046674] i2c-core: driver [tuner] using legacy resume method [ 8.052144] tda9887 0-0043: creating new instance [ 8.052178] tda9887 0-0043: tda988[5/6/7] found [ 8.053272] tuner 0-0043: Tuner 74 found with type(s) Radio TV. [ 8.054355] tuner 0-0061: Tuner -1 found with type(s) Radio TV. [ 8.057250] tuner-simple 0-0061: creating new instance [ 8.057277] tuner-simple 0-0061: type set to 38 (Philips PAL/SECAM multi (FM1216ME MK3)) [ 8.071854] ivtv0: Registered device video0 for encoder MPG (4096 kB) [ 8.071904] ivtv0: Registered device video32 for encoder YUV (2048 kB) [ 8.071950] ivtv0: Registered device vbi0 for encoder VBI (1024 kB) [ 8.071996] ivtv0: Registered device video24 for encoder PCM (320 kB) [ 8.072074] ivtv0: Registered device radio0 for encoder radio [ 8.072128] ivtv0: Registered device video16 for decoder MPG (1024 kB) [ 8.072178] ivtv0: Registered device vbi8 for decoder VBI (64 kB) [ 8.072226] ivtv0: Registered device vbi16 for decoder VOUT [ 8.072276] ivtv0: Registered device video48 for decoder YUV (1024 kB) [ 8.072303] ivtv0: Initialized card: Hauppauge WinTV PVR-350 [ 8.072354] ivtv: End initialization [ 8.697786] ivtv0: Unable to open firmware v4l-cx2341x-enc.fw (must be 376836 bytes) [ 8.697812] ivtv0: Did you put the firmware in the hotplug firmware directory? [ 8.697833] ivtv0: Retry loading firmware [ 9.321108] ivtv0: Unable to open firmware v4l-cx2341x-enc.fw (must be 376836 bytes) [ 9.321133] ivtv0: Did you put the firmware in the hotplug firmware directory? [ 9.321168] ivtv0: Failed to initialize on device video0 [ 9.321211] ivtv0: Failed to initialize on device video48 [ 9.321251] ivtv0: Failed to initialize on device radio0 [ 9.321288] ivtv0: Failed to initialize on device vbi0 [ 9.321324] ivtv0: Failed to initialize on device video32 [ 9.321360] ivtv0: Failed to initialize on device video24 [ 9.321547] ivtv0: Failed to initialize on device vbi16 [ 9.321591] ivtv0: Failed to initialize on device video16 [ 9.321693] ivtv0: Failed to initialize on device vbi8To get this card running without rebooting, I simply did:
rmmod ivtv && modprobe ivtv
Now running 'v4l2-ctl -L' gives us output and not an error.
01-07-2012 19:18
idmapd + autofs on OpenSuSe 12.1
I realised that the ID of files on NFSv4 mounts on my desktop (client) were the default nobody, 4294967294. In checking there was no idmapd running. Also I noted I had not even edited the /etc/idmapd.conf file to enter the local domain name. Did that but still, there was no idmapd init script to launch and executing idmapd would not start. I found out from some google searching that this is a commonly report problem, that is, idmap is started in the /etc/init.d/nfs script, but if you are mounting NFSv4 mounts (that need idmapd) with autofs, then this script won't be called. Calling it manually doesn't help as it aborts after not finding any NFS monts in /etc/fstab.
So I hacked up an idmapd using the nfs init script and tearing out everything besides the idmapd lines. I have not thoroughly tested it, so YMMV. ensure the file is named rpc.idmapd as this is important. Script is below:
cat /etc/init.d/rpc.idmapd #! /bin/bash -x # Copyright (c) 1996-2002 SuSE Linux AG, Nuernberg, Germany. # Copyright (c) 2008 SuSE LINUX Products GmbH, Nuernberg, Germany. # All rights reserved. # # Author: Florian La Roche, 1996 # Werner Fink, 1996,2008 # Burchard Steinbild, 1996 # # Please send feedback to http://www.suse.de/feedback # # /etc/init.d/nfs # ### BEGIN INIT INFO # Provides: rpc.idmapd # Required-Start: $network $portmap # Required-Stop: $network $portmap # Default-Start: 3 5 # Default-Stop: 0 1 2 6 # Short-Description: idmap Daemon # Description: The NFSv4 idmap Dameon ### END INIT INFO . /etc/rc.status . /etc/sysconfig/nfs # XXX: there should be separate init scripts for these really IDMAPD_BIN=/usr/sbin/rpc.idmapd IDMAPD_CLIENT_STATE=/var/run/nfs/nfs-rpc.idmapd IDMAPD_SERVER_STATE=/var/run/nfs/nfsserver-rpc.idmapd if [ -z "$RPC_PIPEFS_DIR" ]; then RPC_PIPEFS_DIR=/var/lib/nfs/rpc_pipefs fi NEED_IDMAPD=no NEED_GSSD=no NEED_LDCONFIG=no state=0 usr="" opt="" mnt="" nfs=$NFS_START_SERVICES if [ "x$nfs" != "xyes" ] then nfs=no fi if test "$NFS4_SUPPORT" = yes ; then NEED_IDMAPD=yes fi if grep -E '^(sunrpc|fs.nfs)' /etc/sysctl.conf > /dev/null 2>&1 ; then nfs=yes fi mount_rpc_pipefs() { # See if the file system is there yet case `stat -c "%t" -f "$RPC_PIPEFS_DIR"` in *67596969*) return 0;; esac mount -t rpc_pipefs rpc_pipefs "$RPC_PIPEFS_DIR" } umount_rpc_pipefs() { # See if the file system is there case `stat -c "%t" -f "$RPC_PIPEFS_DIR"` in *67596969*) umount "$RPC_PIPEFS_DIR" esac } do_start_idmapd() { mount_rpc_pipefs # as idmapd needs to be run by server and client # check if there is already a idmapd running if checkproc $IDMAPD_BIN && test -f $IDMAPD_SERVER_STATE; then killproc -HUP $IDMAPD_BIN else startproc $IDMAPD_BIN return $? fi } rc_reset case "$1-$nfs" in start-no|reload-no) # Always run smnotify, even if no mounts are listed in fstab. # If there is nothing to do, it will exit quickly, and if there # is something to do, the sooner it is done, the better. /usr/sbin/sm-notify $SM_NOTIFY_OPTIONS echo -n "Not starting NFS client services - no NFS found in /etc/fstab:" rc_status -u ;; start-yes|force-start-*) echo -n "Starting NFS client services:" # start idmapd if test "$NEED_IDMAPD" = yes ; then echo -n " idmapd" do_start_idmapd || { rc_status -v rc_exit } [ -d /var/run/nfs ] || mkdir /var/run/nfs echo $IDMAPD_BIN > $IDMAPD_CLIENT_STATE fi rc_status -v # # generate new list of available shared libraries # if test "$NEED_LDCONFIG" = yes; then # check if ld.so.cache needs to be refreshed /etc/init.d/boot.ldconfig start fi # ;; stop* ) # stop idmapd if test -f $IDMAPD_CLIENT_STATE; then # only stop idmapd if it is not needed by server if test ! -f $IDMAPD_SERVER_STATE ; then echo -n " idmapd" killproc $IDMAPD_BIN fi rm -f $IDMAPD_CLIENT_STATE fi umount_rpc_pipefs rc_status -v ;; reload*|force-reload*) # only IDMAP has any sense in which 'reload' makes sense. if checkproc $IDMAPD_BIN; then killproc -HUP $IDMAPD_BIN fi rc_status ;; restart*) ## Stop the service and regardless of whether it was ## running or not, start it again. $0 stop $0 force-start rc_status ;; status*) # if test "$NEED_IDMAPD" = yes && ! checkproc $IDMAPD_BIN; then echo "idmapd not running" rc_failed 3 fi rc_status -v ;; try-restart*|condrestart*) # This restart is not only conditional on the services already # running, but is also gentler in that NFS filesystems are # not unmounted or remounted. # It is possible that the programs have been reinstalled so # we pass a basename rather than a full path to checkproc and killproc echo -n "Restarting NFS services:" if checkproc ${IDMAPD_BIN##*/}; then echo -n " idmapd" killproc ${IDMAPD_BIN##*/} startproc $IDMAPD_BIN fi rc_status -v ;; *) echo "Usage: $0 {start|stop|status|reload|force-reload|restart|try-restart}" exit 1 esac rc_exit