Estou usando o Ubuntu 14.04 LTS em uma máquina P4 antiga. Eu instalei o AMPPS, para que ele possa servir um servidor dev na rede local.
Após configurar tudo (configuração do roteador, etc.), posso acessar o servidor da web sem problemas na porta 80, mas o FTP na porta 21 e o SSH na porta 22 estão recusando conexões de outros PCs na rede.
Ao acessar o FTP da mesma máquina, ele funciona, o que me diz que o Pure-FTPd está funcionando bem.
Qual poderia ser a causa desse problema estranho?
EDITAR
Status do UFW:
Status: active
To Action From
-- ------ ----
[ 1] 21 ALLOW IN Anywhere
[ 2] 80 ALLOW IN Anywhere
[ 3] 21 (v6) ALLOW IN Anywhere (v6)
[ 4] 80 (v6) ALLOW IN Anywhere (v6)
iptables:
Chain INPUT (policy DROP)
target prot opt source destination
ufw-before-logging-input all -- anywhere anywhere
ufw-before-input all -- anywhere anywhere
ufw-after-input all -- anywhere anywhere
ufw-after-logging-input all -- anywhere anywhere
ufw-reject-input all -- anywhere anywhere
ufw-track-input all -- anywhere anywhere
Chain FORWARD (policy DROP)
target prot opt source destination
ufw-before-logging-forward all -- anywhere anywhere
ufw-before-forward all -- anywhere anywhere
ufw-after-forward all -- anywhere anywhere
ufw-after-logging-forward all -- anywhere anywhere
ufw-reject-forward all -- anywhere anywhere
ufw-track-forward all -- anywhere anywhere
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ufw-before-logging-output all -- anywhere anywhere
ufw-before-output all -- anywhere anywhere
ufw-after-output all -- anywhere anywhere
ufw-after-logging-output all -- anywhere anywhere
ufw-reject-output all -- anywhere anywhere
ufw-track-output all -- anywhere anywhere
Chain ufw-after-forward (1 references)
target prot opt source destination
Chain ufw-after-input (1 references)
target prot opt source destination
ufw-skip-to-policy-input udp -- anywhere anywhere udp dpt:netbios-ns
ufw-skip-to-policy-input udp -- anywhere anywhere udp dpt:netbios-dgm
ufw-skip-to-policy-input tcp -- anywhere anywhere tcp dpt:netbios-ssn
ufw-skip-to-policy-input tcp -- anywhere anywhere tcp dpt:microsoft-ds
ufw-skip-to-policy-input udp -- anywhere anywhere udp dpt:bootps
ufw-skip-to-policy-input udp -- anywhere anywhere udp dpt:bootpc
ufw-skip-to-policy-input all -- anywhere anywhere ADDRTYPE match dst-type BROADCAST
Chain ufw-after-logging-forward (1 references)
target prot opt source destination
LOG all -- anywhere anywhere limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "
Chain ufw-after-logging-input (1 references)
target prot opt source destination
LOG all -- anywhere anywhere limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "
Chain ufw-after-logging-output (1 references)
target prot opt source destination
Chain ufw-after-output (1 references)
target prot opt source destination
Chain ufw-before-forward (1 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT icmp -- anywhere anywhere icmp destination-unreachable
ACCEPT icmp -- anywhere anywhere icmp source-quench
ACCEPT icmp -- anywhere anywhere icmp time-exceeded
ACCEPT icmp -- anywhere anywhere icmp parameter-problem
ACCEPT icmp -- anywhere anywhere icmp echo-request
ufw-user-forward all -- anywhere anywhere
Chain ufw-before-input (1 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ufw-logging-deny all -- anywhere anywhere ctstate INVALID
DROP all -- anywhere anywhere ctstate INVALID
ACCEPT icmp -- anywhere anywhere icmp destination-unreachable
ACCEPT icmp -- anywhere anywhere icmp source-quench
ACCEPT icmp -- anywhere anywhere icmp time-exceeded
ACCEPT icmp -- anywhere anywhere icmp parameter-problem
ACCEPT icmp -- anywhere anywhere icmp echo-request
ACCEPT udp -- anywhere anywhere udp spt:bootps dpt:bootpc
ufw-not-local all -- anywhere anywhere
ACCEPT udp -- anywhere 224.0.0.251 udp dpt:mdns
ACCEPT udp -- anywhere 239.255.255.250 udp dpt:1900
ufw-user-input all -- anywhere anywhere
Chain ufw-before-logging-forward (1 references)
target prot opt source destination
Chain ufw-before-logging-input (1 references)
target prot opt source destination
Chain ufw-before-logging-output (1 references)
target prot opt source destination
Chain ufw-before-output (1 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ufw-user-output all -- anywhere anywhere
Chain ufw-logging-allow (0 references)
target prot opt source destination
LOG all -- anywhere anywhere limit: avg 3/min burst 10 LOG level warning prefix "[UFW ALLOW] "
Chain ufw-logging-deny (2 references)
target prot opt source destination
RETURN all -- anywhere anywhere ctstate INVALID limit: avg 3/min burst 10
LOG all -- anywhere anywhere limit: avg 3/min burst 10 LOG level warning prefix "[UFW BLOCK] "
Chain ufw-not-local (1 references)
target prot opt source destination
RETURN all -- anywhere anywhere ADDRTYPE match dst-type LOCAL
RETURN all -- anywhere anywhere ADDRTYPE match dst-type MULTICAST
RETURN all -- anywhere anywhere ADDRTYPE match dst-type BROADCAST
ufw-logging-deny all -- anywhere anywhere limit: avg 3/min burst 10
DROP all -- anywhere anywhere
Chain ufw-reject-forward (1 references)
target prot opt source destination
Chain ufw-reject-input (1 references)
target prot opt source destination
Chain ufw-reject-output (1 references)
target prot opt source destination
Chain ufw-skip-to-policy-forward (0 references)
target prot opt source destination
DROP all -- anywhere anywhere
Chain ufw-skip-to-policy-input (7 references)
target prot opt source destination
DROP all -- anywhere anywhere
Chain ufw-skip-to-policy-output (0 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
Chain ufw-track-forward (1 references)
target prot opt source destination
Chain ufw-track-input (1 references)
target prot opt source destination
Chain ufw-track-output (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere ctstate NEW
ACCEPT udp -- anywhere anywhere ctstate NEW
Chain ufw-user-forward (1 references)
target prot opt source destination
Chain ufw-user-input (1 references)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:ftp
ACCEPT udp -- anywhere anywhere udp dpt:fsp
ACCEPT tcp -- anywhere anywhere tcp dpt:http
ACCEPT udp -- anywhere anywhere udp dpt:http
Chain ufw-user-limit (0 references)
target prot opt source destination
LOG all -- anywhere anywhere limit: avg 3/min burst 5 LOG level warning prefix "[UFW LIMIT BLOCK] "
REJECT all -- anywhere anywhere reject-with icmp-port-unreachable
Chain ufw-user-limit-accept (0 references)
target prot opt source destination
ACCEPT all -- anywhere anywhere
Chain ufw-user-logging-forward (0 references)
target prot opt source destination
Chain ufw-user-logging-input (0 references)
target prot opt source destination
Chain ufw-user-logging-output (0 references)
target prot opt source destination
Chain ufw-user-output (1 references)
target prot opt source destination
Configuração pura do FTP:
############################################################
# #
# Configuration file for pure-ftpd wrappers #
# #
############################################################
# If you want to run Pure-FTPd with this configuration
# instead of command-line options, please run the
# following command :
#
# {$path}/Pure-FTPd//sbin/pure-config.pl {$path}/Pure-FTPd//etc/pure-ftpd.conf
#
# Please don't forget to have a look at documentation at
# http://www.pureftpd.org/documentation.shtml for a complete list of
# options.
# Cage in every user in his home directorysdfsdfj sdfksdfgksgf
ChrootEveryone yes
# If the previous option is set to "no", members of the following group
# won't be caged. Others will be. If you don't want chroot()ing anyone,
# just comment out ChrootEveryone and TrustedGID.
# TrustedGID 100
# Turn on compatibility hacks for broken clients
BrokenClientsCompatibility no
# Maximum number of simultaneous users
MaxClientsNumber 50
# Fork in background
Daemonize yes
# Maximum number of sim clients with the same IP address
MaxClientsPerIP 8
# If you want to log all client commands, set this to "yes".
# This directive can be duplicated to also log server responses.
VerboseLog yes
# List dot-files even when the client doesn't send "-a".
DisplayDotFiles yes
# Don't allow authenticated users - have a public anonymous FTP only.
AnonymousOnly no
# Disallow anonymous connections. Only allow authenticated users.
NoAnonymous no
# Syslog facility (auth, authpriv, daemon, ftp, security, user, local*)
# The default facility is "ftp". "none" disables logging.
SyslogFacility ftp
# Display fortune cookies
# FortunesFile /usr/share/fortune/zippy
# Don't resolve host names in log files. Logs are less verbose, but
# it uses less bandwidth. Set this to "yes" on very busy servers or
# if you don't have a working DNS.
DontResolve yes
# Maximum idle time in minutes (default = 15 minutes)
MaxIdleTime 15
# LDAP configuration file (see README.LDAP)
# LDAPConfigFile /etc/pureftpd-ldap.conf
# MySQL configuration file (see README.MySQL)
# MySQLConfigFile /etc/pureftpd-mysql.conf
# Postgres configuration file (see README.PGSQL)
# PGSQLConfigFile /etc/pureftpd-pgsql.conf
# PureDB user database (see README.Virtual-Users)
PureDB {$path}/Pure-FTPd/etc/pureftpd.pdb
# Path to pure-authd socket (see README.Authentication-Modules)
# ExtAuth /var/run/ftpd.sock
# If you want to enable PAM authentication, uncomment the following line
# PAMAuthentication yes
# If you want simple Unix (/etc/passwd) authentication, uncomment this
UnixAuthentication yes
# Please note that LDAPConfigFile, MySQLConfigFile, PAMAuthentication and
# UnixAuthentication can be used only once, but they can be combined
# together. For instance, if you use MySQLConfigFile, then UnixAuthentication,
# the SQL server will be asked. If the SQL authentication fails because the
# user wasn't found, another try # will be done with /etc/passwd and
# /etc/shadow. If the SQL authentication fails because the password was wrong,
# the authentication chain stops here. Authentication methods are chained in
# the order they are given.
# 'ls' recursion limits. The first argument is the maximum number of
# files to be displayed. The second one is the max subdirectories depth
LimitRecursion 10000 8
# Are anonymous users allowed to create new directories ?
AnonymousCanCreateDirs no
# If the system is more loaded than the following value,
# anonymous users aren't allowed to download.
MaxLoad 4
# Port range for passive connections replies. - for firewalling.
# PassivePortRange 30000 50000
# Force an IP address in PASV/EPSV/SPSV replies. - for NAT.
# Symbolic host names are also accepted for gateways with dynamic IP
# addresses.
# ForcePassiveIP 192.168.0.1
# Upload/download ratio for anonymous users.
# AnonymousRatio 1 10
# Upload/download ratio for all users.
# This directive superscedes the previous one.
# UserRatio 1 10
# Disallow downloading of files owned by "ftp", ie.
# files that were uploaded but not validated by a local admin.
AntiWarez yes
# IP address/port to listen to (default=all IP and port 21).
Bind 127.0.0.1,21
# Maximum bandwidth for anonymous users in KB/s
# AnonymousBandwidth 8
# Maximum bandwidth for *all* users (including anonymous) in KB/s
# Use AnonymousBandwidth *or* UserBandwidth, both makes no sense.
# UserBandwidth 8
# File creation mask. <umask for files>:<umask for dirs> .
# 177:077 if you feel paranoid.
Umask 133:022
# Minimum UID for an authenticated user to log in.
MinUID 100
# Allow FXP transfers for authenticated users.
AllowUserFXP no
# Allow anonymous FXP for anonymous and non-anonymous users.
AllowAnonymousFXP no
# Users can't delete/write files beginning with a dot ('.')
# even if they own them. If TrustedGID is enabled, this group
# will have access to dot-files, though.
ProhibitDotFilesWrite no
# Prohibit *reading* of files beginning with a dot (.history, .ssh...)
ProhibitDotFilesRead no
# Never overwrite files. When a file whose name already exist is uploaded,
# it get automatically renamed to file.1, file.2, file.3, ...
AutoRename no
# Disallow anonymous users to upload new files (no = upload is allowed)
AnonymousCantUpload no
# Only connections to this specific IP address are allowed to be
# non-anonymous. You can use this directive to open several public IPs for
# anonymous FTP, and keep a private firewalled IP for remote administration.
# You can also only allow a non-routable local IP (like 10.x.x.x) to
# authenticate, and keep a public anon-only FTP server on another IP.
TrustedIP 127.0.0.1
# If you want to add the PID to every logged line, uncomment the following
# line.
LogPID yes
# Create an additional log file with transfers logged in a Apache-like format :
# fw.c9x.org - jedi [13/Dec/1975:19:36:39] "GET /ftp/linux.tar.bz2" 200 21809338
# This log file can then be processed by www traffic analyzers.
AltLog clf:{$path}/Pure-FTPd/logs/pure-ftpd.log
# Create an additional log file with transfers logged in a format optimized
# for statistic reports.
# AltLog stats:/var/log/pureftpd.log
# Create an additional log file with transfers logged in the standard W3C
# format (compatible with most commercial log analyzers)
# AltLog w3c:/var/log/pureftpd.log
# Disallow the CHMOD command. Users can't change perms of their files.
#NoChmod yes
# Allow users to resume and upload files, but *NOT* to delete them.
#KeepAllFiles yes
# Automatically create home directories if they are missing
#CreateHomeDir yes
# Enable virtual quotas. The first number is the max number of files.
# The second number is the max size of megabytes.
# So 1000:10 limits every user to 1000 files and 10 Mb.
#Quota 1000:10
# If your pure-ftpd has been compiled with standalone support, you can change
# the location of the pid file. The default is /var/run/pure-ftpd.pid
PIDFile {$path}/Pure-FTPd/logs/pure-ftpd.pid
# If your pure-ftpd has been compiled with pure-uploadscript support,
# this will make pure-ftpd write info about new uploads to
# /var/run/pure-ftpd.upload.pipe so pure-uploadscript can read it and
# spawn a script to handle the upload.
# Don't enable this option if you don't actually use pure-uploadscript.
#CallUploadScript yes
# This option is useful with servers where anonymous upload is
# allowed. As /var/ftp is in /var, it save some space and protect
# the log files. When the partition is more that X percent full,
# new uploads are disallowed.
MaxDiskUsage 99
# Set to 'yes' if you don't want your users to rename files.
#NoRename yes
# Be 'customer proof' : workaround against common customer mistakes like
# 'chmod 0 public_html', that are valid, but that could cause ignorant
# customers to lock their files, and then keep your technical support busy
# with silly issues. If you're sure all your users have some basic Unix
# knowledge, this feature is useless. If you're a hosting service, enable it.
CustomerProof yes
# Per-user concurrency limits. It will only work if the FTP server has
# been compiled with --with-peruserlimits (and this is the case on
# most binary distributions) .
# The format is : <max sessions per user>:<max anonymous sessions>
# For instance, 3:20 means that the same authenticated user can have 3 active
# sessions max. And there are 20 anonymous sessions max.
# PerUserLimits 3:20
# When a file is uploaded and there is already a previous version of the file
# with the same name, the old file will neither get removed nor truncated.
# Upload will take place in a temporary file and once the upload is complete,
# the switch to the new version will be atomic. For instance, when a large PHP
# script is being uploaded, the web server will still serve the old version and
# immediatly switch to the new one as soon as the full file will have been
# transfered. This option is incompatible with virtual quotas.
# NoTruncate yes
# This option can accept three values :
# 0 : disable SSL/TLS encryption layer (default).
# 1 : accept both traditional and encrypted sessions.
# 2 : refuse connections that don't use SSL/TLS security mechanisms,
# including anonymous sessions.
# Do _not_ uncomment this blindly. Be sure that :
# 1) Your server has been compiled with SSL/TLS support (--with-tls),
# 2) A valid certificate is in place,
# 3) Only compatible clients will log in.
# TLS 1
# List of ciphers that will be accepted for SSL/TLS connections
# Prefix with -S: in order to totally disable SSL but not TLS.
# TLSCipherSuite HIGH:MEDIUM:+TLSv1:!SSLv2:+SSLv3
# Listen only to IPv4 addresses in standalone mode (ie. disable IPv6)
# By default, both IPv4 and IPv6 are enabled.
# IPV4Only yes
# Listen only to IPv6 addresses in standalone mode (ie. disable IPv4)
# By default, both IPv4 and IPv6 are enabled.
# IPV6Only yes
# UTF-8 support for file names (RFC 2640)
# Define charset of the server filesystem and optionnally the default charset
# for remote clients if they don't use UTF-8.
# Works only if pure-ftpd has been compiled with --with-rfc2640
# FileSystemCharset big5
# ClientCharset big5
netstat -nptl Saída
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 127.0.0.1:21 0.0.0.0:* LISTEN 17153/pure-ftpd (SE
tcp 0 0 127.0.1.1:53 0.0.0.0:* LISTEN 929/dnsmasq
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 25138/sshd
tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 6288/cupsd
tcp 0 0 127.0.0.1:60800 0.0.0.0:* LISTEN 13714/Ampps
tcp6 0 0 :::22 :::* LISTEN 25138/sshd
tcp6 0 0 ::1:631 :::* LISTEN 6288/cupsd
tcp6 0 0 :::443 :::* LISTEN 2040/httpd
tcp6 0 0 :::3306 :::* LISTEN 2066/mysqld
tcp6 0 0 :::80 :::* LISTEN 2040/httpd