I want to rsync to a remote host to a given directory.

local-host:

ssh-keygen -t rsa

keyfilename: ~/.ssh/rsync
ssh-copy-id -i .ssh/rsync rsyncuser@remote-host

rsync files with ssh:

rsync -vaHxr --delete \
      -e "ssh -i ~/.ssh/rsync -c arcfour -o Compression=no -x" \
      LOCALDIR rsyncuser@remote-host:

remote-host

/home/rsyncuser/.ssh/authorized_keys:

from="192.168.0.2,",command="/home/rsyncuser/validate-rsync.sh",
 no-pty,no-agent-forwarding,no-port-forwarding
 ssh-dss 012345678...

limit access with from (optional).
On sucessfully ssh login command is executed.
Read More...

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With iptables module recent you can limit the count of tcp connection attempts. In my case i allow only 3 ssh connection attempts per minute. This stops script kiddies doing ssh brute force attacs.

iptables -N synflood
iptables -A synflood -p tcp --dport ssh -m recent --set --name SSH
iptables -A synflood -p tcp --dport ssh -m recent --update \
                     --seconds 60 --hitcount 4 --name SSH -j DROP

iptables -A INPUT -p tcp -m state --state NEW -j synflood
iptables -A FORWARD -i $OUT -p tcp -m state --state NEW -j synflood

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apache

NameVirtualHost *:80
NameVirtualHost *:443

<VirtualHost *:443>
    ServerName one.domain.at

    SSLEngine on
    SSLCertificateFile /etc/ssl/certs/domain.at.pem
    SSLCertificateKeyFile /etc/ssl/private/domain.at.key

    CustomLog /var/log/apache2/one.access.log combined
    ErrorLog  /var/log/apache2/one.errors.log
.
.
.
</VirtualHost>

<VirtualHost *:443>
    ServerName two.domain.at

    SSLEngine on
    SSLCertificateFile /etc/ssl/certs/domain.at.pem
    SSLCertificateKeyFile /etc/ssl/private/domain.at.key

    CustomLog /var/log/apache2/two.access.log combined
    ErrorLog  /var/log/apache2/two.errors.log
.
.
.
</VirtualHost>

lighttpd

$SERVER["socket"] == "0.0.0.0:443" {
  ssl.engine = "enable"
  ssl.use-sslv2 = "disable"
  ssl.pemfile = "/etc/lighttpd/ssl/domain.at.pem"
  ssl.ca-file = "/etc/lighttpd/ssl/cacert.pem"
  $HTTP["host"] == "one.domain.at" {
    server.name = "one.domain.at"
    server.errorlog  = "/var/log/lighttpd/one_error.log"
    accesslog.filename = "/var/log/lighttpd/one_access.log"
    server.document-root = "/var/www/one"
  }

  $HTTP["host"] == "two.domain.at" {
    server.name = "two.domain.at"
    server.errorlog = "/var/log/lighttpd/two_error.log"
    accesslog.filename = "/var/log/lighttpd/two_access.log"
    server.document-root = "/var/www/two"
  }
}

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sftp -o Ciphers=blowfish-cbc USER@HOST

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aa-genprof can not connect to internet, therefore i do it manually

/etc/apparmor.d/usr.bin.program:

#include <tunables/global>
/usr/sbin/program flags=(complain) {
  #include <abstractions/base>
}

start program and use it

aa-logprof -f /var/log/syslog -m "STARTSCAN-TIMESTAMP FROM SYSLOG"

Answer the questions and save it.

if no audit logs occur remove "flags=(complain)"

reload a rule: apparmor_parser -r usr.bin.program

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