Table des matières
3 billet(s) pour janvier 2026
| Notes rsh rcp | 2026/01/21 18:08 | Jean-Baptiste |
| Git - Duplication d'un dépôt | 2026/01/19 10:22 | Jean-Baptiste |
| Exemple simple de conf Nagios | 2026/01/14 10:07 | Jean-Baptiste |
Postfix Liste blanche et liste noire
Librement traduit de http://www.linuxlasse.net/linux/howtos/Blacklist_and_Whitelist_with_Postfix
Nous pouvons jouer sur deux paramètres :
check_client_access
Bloque par IP, plage d'IP ou nom DNS
check_sender_access
Bloque par adresse email (champ FROM)
Il est important de définir check_client_access et check_sender_access en premier
/etc/postfix/main.cf
smtpd_client_restrictions = permit_mynetworks, check_client_access hash:/etc/postfix/client_checks, check_sender_access hash:/etc/postfix/sender_checks
/etc/postfix/client_checks
# Restricts which clients this system accepts SMTP connections from. mondomain.com REJECT Fraud rejected example.com REJECT No spammers .example.com REJECT No spammers, from your subdomain 123.456.789.123 REJECT Your IP is spammer 123.456.789.0/24 REJECT Your IP range is spammer 321.987.654.321 OK example1.com OK
/etc/postfix/sender_checks
# Restricts sender addresses this system accepts in MAIL FROM commands. example.com REJECT env. from addr any@example.com rejected .example.com REJECT env. from addr any@sub.example.com rejected user@example.com REJECT We don't want your email example2.com OK
postmap /etc/postfix/client_checks postmap /etc/postfix/sender_checks postfix reload
Postfix bloquer un domain ou une IP
Source : http://arnofear.free.fr/linux/template.php?tuto=22&page=1
/etc/postfix/main.cf
# Permet de refuser la connexion SMTP pour les IP ou domaines contenus # dans ce fichier. smtpd_client_restrictions = check_client_access hash:/etc/postfix/blacklisted_sender
/etc/postfix/blacklisted_sender
# Domaine ou IP. rolexreplica.com REJECT You are blacklisted 90.123.456.78 REJECT You are blacklisted
postmap /etc/postfix/blacklisted_sender service postfix reload
Cloud - Serverless Framework
Voir : https://www.serverless.com
Install
npm install -g serverless
Exemple
serverless cd aws-python-project serverless deploy serverless invoke -f hello serverless invoke -f hello --log serverless remove
Ajout disque SAN Fibre Channel fiber channel - scan newly added fc luns and scsi disks
Source : https://www.learnitguide.net/2016/02/scan-newly-added-fc-luns-and-scsi-disks.html
Identifier les disques existants
LANG=C fdisk -l 2>/dev/null | egrep '^Disk' | egrep -v 'dm-|type|identifier'
Identifier le numéro de l'adaptateur HBA
systool -c fc_host -v
Ou
# ls /sys/class/fc_host host0
Rescan des LUNs
echo "1" > /sys/class/fc_host/host0/issue_lip echo "- - -" > /sys/class/scsi_host/host0/scan
Il peut être nécessaire de rescaner les partitions
partprobe /dev/sdc partprobe /dev/sdd
(ou addpart ?)
Ou avec le script rescan-scsi-bus.sh
yum install sg3_utils
rescan-scsi-bus.sh
Vérif
LANG=C fdisk -l 2>/dev/null | egrep '^Disk' | egrep -v 'dm-|type|identifier' dmesg lsblk multipath -l
Postfix ajout d'un nouveau alias d'email
Exemple pour que jean@acme.fr reçoit maintenant les emails destiné à poleemploi@acme.fr
1 Modif du fichier "aliases"
On ajout une ligne au fichier /etc/aliases comme ci-dessous
- /etc/aliases
ebay1001: jean
2 Pour générer le fichier ''/etc/aliases.db''
newaliases
Il n'est pas nécessaire de faire un “reload” ni un “restart” de Postfix
Police de caractères - fonts
Voir :
Polices de caractères :
- Google Noto
- Lohit
- tex-gyre
Voir https://bits.debian.org/2021/12/2000-fonts-debian.html
ITP #973779 fnt install scheherazadenew RFP #944140 fnt install arsenal RFP #757249 fnt install ekmukta RFP #724629 fnt install firasans RFP #766211 fnt install orbitron RFP #803690 fnt install pompiere RFP #754784 fnt install raleway RFP #827735 fnt install reemkufi RFP #986999 fnt install redhat{display,mono,text}
sudo fc-match "Noto Color Emoji" sudo apt-get install fonts-noto-color-emoji # copy config from this gist your profile config directory cp 10-emoji.conf $XDG_CONFIG_HOME/fontconfig/conf.d/10-emoji.conf # regenerate font cache fc-cache -f -v
Open this url in your browser
https://eosrei.github.io/emojione-color-font/full-demo.html
~/.config/fontconfig/conf.d/01-emoji.conf
https://gist.github.com/probil/36dd02d6c9d8446f027aaafb1728a0f3#file-10-emoji-conf ~/.config/fontconfig/conf.d/99-emoji.conf (you will probably need to create the folders!) and add this:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE fontconfig SYSTEM "fonts.dtd"> <fontconfig> <match> <test name="family"><string>sans-serif</string></test> <edit name="family" mode="append" binding="strong"> <string>Bitstream Vera Serif</string> <string>Noto Color Emoji</string> </edit> </match> <!-- Add emoji generic family --> <alias binding="strong"> <family>emoji</family> <default><family>Noto Color Emoji</family></default> </alias> <!-- Aliases for the other emoji fonts --> <alias binding="strong"> <family>Apple Color Emoji</family> <prefer><family>Noto Color Emoji</family></prefer> </alias> <alias binding="strong"> <family>Segoe UI Emoji</family> <prefer><family>Noto Color Emoji</family></prefer> </alias> <alias binding="strong"> <family>Emoji One</family> <prefer><family>Noto Color Emoji</family></prefer> </alias> </fontconfig>
cp /usr/share/fonts/truetype/noto/NotoColorEmoji.ttf /usr/local/share/fonts/ chmod 644 /usr/local/share/fonts/NotoColorEmoji.ttf
clear font cache
fc-cache -fv
Autres - setfont
Source : https://tookmund.com/2024/01/fixing-my-shell
if [ -t 1 ] then setfont /usr/share/consolefonts/Lat15-Terminus20x10.psf.gz fi
dpkg-reconfigure console-setup
fc-cache ~/.fonts/
chkfontpath --add /usr/share/fonts/local/
ttmkfdir -d /usr/share/fonts/local/ -o /usr/share/fonts/local/fonts.scale
Method to add fonts is as follows:
- Double-click on the “Computer” icon on your desktop.
- In the “File” menu, choose “Open Location…”
- Type in: fonts:
- When the fonts window appears, drag and drop the fonts to be installed into this window.
The new fonts you install should be usable by most GNOME applications. Some applications may have to be restarted to use the newly added fonts.