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x-ui.sh: install nftables alongside fail2ban in install_iplimit

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On fresh Debian 12+, Ubuntu 24+ and recent RHEL-family minimal images
the fail2ban package ships with `banaction = nftables-multiport` as
the default in /etc/fail2ban/jail.conf but does not pull in the
`nftables` package as a dependency. The first SSH brute-force attempt
hits the default sshd jail and fail2ban logs

    stderr: /bin/sh: 1: nft: not found
    returned 127 -- HINT on 127: "Command not found"

repeatedly, which users mistake for a 3x-ui regression (see the
discussion on #4083). The 3x-ipl jail itself is unaffected — it uses
an iptables-based action configured in create_iplimit_jails — so this
is only stray noise, but noisy enough to look like a real failure on
first install.

Add `nftables` to the package list in every branch of install_iplimit
so new installs end up with a working default sshd jail out of the
box. Existing installs where `nftables` is already present are a
no-op.
This commit is contained in:
pwnnex 2026-04-22 18:50:42 +03:00
parent e6d0c33937
commit 71ac920436
1 changed files with 16 additions and 9 deletions
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25
x-ui.sh
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@ -1802,7 +1802,14 @@ install_iplimit() {
if ! command -v fail2ban-client &>/dev/null; then if ! command -v fail2ban-client &>/dev/null; then
echo -e "${green}Fail2ban is not installed. Installing now...!${plain}\n" echo -e "${green}Fail2ban is not installed. Installing now...!${plain}\n"
# Check the OS and install necessary packages # Install fail2ban together with nftables. Recent fail2ban packages
# default to `banaction = nftables-multiport` in /etc/fail2ban/jail.conf,
# but the `nftables` package isn't pulled in as a dependency on most
# minimal server images (Debian 12+, Ubuntu 24+, fresh RHEL-family).
# Without `nft` in PATH the default sshd jail fails to ban with
# stderr: '/bin/sh: 1: nft: not found'
# even though our own 3x-ipl jail uses iptables. Bundling the binary
# at install time prevents that confusing log spam for new installs.
case "${release}" in case "${release}" in
ubuntu) ubuntu)
apt-get update apt-get update
@ -1810,34 +1817,34 @@ install_iplimit() {
apt-get install python3-pip -y apt-get install python3-pip -y
python3 -m pip install pyasynchat --break-system-packages python3 -m pip install pyasynchat --break-system-packages
fi fi
apt-get install fail2ban -y apt-get install fail2ban nftables -y
;; ;;
debian) debian)
apt-get update apt-get update
if [ "$os_version" -ge 12 ]; then if [ "$os_version" -ge 12 ]; then
apt-get install -y python3-systemd apt-get install -y python3-systemd
fi fi
apt-get install -y fail2ban apt-get install -y fail2ban nftables
;; ;;
armbian) armbian)
apt-get update && apt-get install fail2ban -y apt-get update && apt-get install fail2ban nftables -y
;; ;;
fedora | amzn | virtuozzo | rhel | almalinux | rocky | ol) fedora | amzn | virtuozzo | rhel | almalinux | rocky | ol)
dnf -y update && dnf -y install fail2ban dnf -y update && dnf -y install fail2ban nftables
;; ;;
centos) centos)
if [[ "${VERSION_ID}" =~ ^7 ]]; then if [[ "${VERSION_ID}" =~ ^7 ]]; then
yum update -y && yum install epel-release -y yum update -y && yum install epel-release -y
yum -y install fail2ban yum -y install fail2ban nftables
else else
dnf -y update && dnf -y install fail2ban dnf -y update && dnf -y install fail2ban nftables
fi fi
;; ;;
arch | manjaro | parch) arch | manjaro | parch)
pacman -Syu --noconfirm fail2ban pacman -Syu --noconfirm fail2ban nftables
;; ;;
alpine) alpine)
apk add fail2ban apk add fail2ban nftables
;; ;;
*) *)
echo -e "${red}Unsupported operating system. Please check the script and install the necessary packages manually.${plain}\n" echo -e "${red}Unsupported operating system. Please check the script and install the necessary packages manually.${plain}\n"