[quote=“PascalHambourg”]C’est donc avec la commande “route -n” que tu verras les adresses bloquées.
Tu devrais pouvoir débloquer une adresse avec
route del <adresse> reject
(à vérifier quand même, pas les moyens de tester immédiatement)
EDIT : ça a l’air bon.
A noter que cette façon de bloquer n’est “propre” que si la validation d’adresse source (rp_filter) est activée sur l’interface réseau qui reçoit le trafic. Dans le cas contraire ce sont les paquets de réponse émis qui sont bloqués.[/quote]
Salut,
Merci PascalHambourg c’est exactement sa, maintenant je peux accéder avec l’ancienne IP.
Une dernière question, tu me conseil quoi comme config ? Je veux dire par là, la commande pour bannir les IP et où rajouté un port a surveillé ?
Voici la config actuelle de portsentry (j’ai supprimé quelques commentaires):
# Un-comment these if you are really anal:
#TCP_PORTS="1,7,9,11,15,70,79,80,109,110,111,119,138,139,143,512,513,514,515,540,635,1080,1524,2000,2001,4000,4001,5742,6000,6001,6667,12345,12346,20034,27665,30303,32771,32772,32773,32774,31337,40421,40425,49724,54320"
#UDP_PORTS="1,7,9,66,67,68,69,111,137,138,161,162,474,513,517,518,635,640,641,666,700,2049,31335,27444,34555,32770,32771,32772,32773,32774,31337,54321"
#
# Use these if you just want to be aware:
TCP_PORTS="1,11,15,79,111,119,143,540,635,1080,1524,2000,5742,6667,12345,15000,11001,11000,12346,20034,27665,31337,32771,32772,32773,32774,40421,49724,54320"
UDP_PORTS="1,7,9,69,161,162,513,635,640,641,700,37444,34555,31335,32770,32771,32772,32773,32774,31337,54321"
#
# Use these for just bare-bones
#TCP_PORTS="1,11,15,110,111,143,540,635,1080,1524,2000,12345,12346,20034,32771,32772,32773,32774,49724,54320"
#UDP_PORTS="1,7,9,69,161,162,513,640,700,32770,32771,32772,32773,32774,31337,54321"
###########################################
# Advanced Stealth Scan Detection Options #
###########################################
ADVANCED_PORTS_TCP="1024"
ADVANCED_PORTS_UDP="1024"
# Default TCP ident and NetBIOS service
ADVANCED_EXCLUDE_TCP="113,139"
# Default UDP route (RIP), NetBIOS, bootp broadcasts.
ADVANCED_EXCLUDE_UDP="520,138,137,67"
######################
# Configuration Files#
######################
#
# Hosts to ignore
IGNORE_FILE="/etc/portsentry/portsentry.ignore"
# Hosts that have been denied (running history)
HISTORY_FILE="/var/lib/portsentry/portsentry.history"
# Hosts that have been denied this session only (temporary until next restart)
BLOCKED_FILE="/var/lib/portsentry/portsentry.blocked"
##############################
# Misc. Configuration Options#
##############################
#
# DNS Name resolution - Setting this to "1" will turn on DNS lookups
# for attacking hosts. Setting it to "0" (or any other value) will shut
# it off.
RESOLVE_HOST = "0"
###################
# Response Options#
###################
##################
# Ignore Options #
##################
# 0 = Do not block UDP/TCP scans.
# 1 = Block UDP/TCP scans.
# 2 = Run external command only (KILL_RUN_CMD)
BLOCK_UDP="1"
BLOCK_TCP="1"
###################
# Dropping Routes:#
###################
# Generic
#KILL_ROUTE="/sbin/route add $TARGET$ 333.444.555.666"
# Generic Linux
#KILL_ROUTE="/sbin/route add -host $TARGET$ gw 333.444.555.666"
# Newer versions of Linux support the reject flag now. This
# is cleaner than the above option.
KILL_ROUTE="/sbin/route add -host $TARGET$ reject"
# Generic BSD (BSDI, OpenBSD, NetBSD, FreeBSD)
#KILL_ROUTE="/sbin/route add $TARGET$ 333.444.555.666"
# Generic Sun
#KILL_ROUTE="/usr/sbin/route add $TARGET$ 333.444.555.666 1"
# NEXTSTEP
#KILL_ROUTE="/usr/etc/route add $TARGET$ 127.0.0.1 1"
# FreeBSD
#KILL_ROUTE="route add -net $TARGET$ -netmask 255.255.255.255 127.0.0.1 -blackhole"
# Digital UNIX 4.0D (OSF/1 / Compaq Tru64 UNIX)
#KILL_ROUTE="/sbin/route add -host -blackhole $TARGET$ 127.0.0.1"
# Generic HP-UX
#KILL_ROUTE="/usr/sbin/route add net $TARGET$ netmask 255.255.255.0 127.0.0.1"
##
# Using a packet filter is the PREFERRED. The below lines
# work well on many OS's. Remember, you can only uncomment *one*
# KILL_ROUTE option.
##
# ipfwadm support for Linux
#KILL_ROUTE="/sbin/ipfwadm -I -i deny -S $TARGET$ -o"
#
# ipfwadm support for Linux (no logging of denied packets)
#KILL_ROUTE="/sbin/ipfwadm -I -i deny -S $TARGET$"
#
# ipchain support for Linux
#KILL_ROUTE="/sbin/ipchains -I input -s $TARGET$ -j DENY -l"
#
# ipchain support for Linux (no logging of denied packets)
#KILL_ROUTE="/sbin/ipchains -I input -s $TARGET$ -j DENY"
#
# iptables support for Linux
#KILL_ROUTE="/sbin/iptables -I INPUT -s $TARGET$ -j DROP"
#
# iptables support for Linux with limit and LOG support. Logs only
# a limited number of packets to avoid a denial of service attack.
# KILL_ROUTE="/sbin/iptables -I INPUT -s $TARGET$ -j DROP && /sbin/iptables -I INPUT -s $TARGET$ -m limit --limit 3/minute --limit-burst 5 -j LOG --log-level DEBUG --log-prefix 'Portsentry: dropping: '"
#
# For those of you running FreeBSD (and compatible) you can
# use their built in firewalling as well.
#
#KILL_ROUTE="/sbin/ipfw add 1 deny all from $TARGET$:255.255.255.255 to any"
#
#
# For those running ipfilt (OpenBSD, etc.)
# NOTE THAT YOU NEED TO CHANGE external_interface TO A VALID INTERFACE!!
#
#KILL_ROUTE="/bin/echo 'block in log on external_interface from $TARGET$/32 to any' | /sbin/ipf -f -"
###############
# TCP Wrappers#
###############
#KILL_HOSTS_DENY="ALL: $TARGET$"
# Format Two: New Style - The format used when extended option
# processing is enabled. You can drop in extended processing
# options, but be sure you escape all '%' symbols with a backslash
# to prevent problems writing out (i.e. \%c \%h )
#
#KILL_HOSTS_DENY="ALL: $TARGET$ : DENY"
###################
# External Command#
###################
#KILL_RUN_CMD_FIRST = "0"
#KILL_RUN_CMD="/some/path/here/script $TARGET$ $PORT$ $MODE$"
# for examples see /usr/share/doc/portsentry/examples/
#####################
# Scan trigger value#
#####################
SCAN_TRIGGER="0"
######################
# Port Banner Section#
######################
#PORT_BANNER="** UNAUTHORIZED ACCESS PROHIBITED *** YOUR CONNECTION ATTEMPT HAS BEEN LOGGED. GO AWAY."
# EOF
Encore merci.
@++