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Сервер Red Hat Linux 7.1

Настройка маршрутизатора pups.it.ru


Конфигурационный файл /etc/host.conf

[root@pups /root]# less /etc/host.conf
order hosts,bind


Конфигурационный файл /etc/sysctl.conf
[root@pups /root]# less /etc/sysctl.conf
# Disables packet forwarding
# net.ipv4.ip_forward = 0
net.ipv4.ip_forward = 1

# Enables source route verification
net.ipv4.conf.all.rp_filter = 1

# Disables the magic-sysrq key
kernel.sysrq = 0


Конфигурационный файл /etc/sysconfig/network-scripts/ifcfg-eth0
[root@pups /root]# less /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
BROADCAST=172.18.157.255
IPADDR=172.18.157.2
NETMASK=255.255.255.0
NETWORK=172.18.157.0
ONBOOT=yes
IPXACTIVE_802_3=yes
IPXPRIMARY_802_3=yes
IPXNETNUM_802_3=15705


Конфигурационный файл /etc/sysconfig/network-scripts/ifcfg-ppp0
[root@pups /root]# less /etc/sysconfig/network-scripts/ifcfg-ppp0
DEVICE=ppp0
MODEMPORT=/dev/ttyS18
LINESPEED=38400
HARDFLOWCTL=yes
DEFROUTE=no
# MRU=296
# MTU=296
MRU=576
MTU=576
PPPOPTIONS="passive persist lcp-restart 60"
REMIP=172.18.161.2
IPADDR=172.18.161.1
NETMASK=255.255.255.0
# NETWORK=172.18.160.0
# BROADCAST=172.18.160.255
ONBOOT=yes
BOOTPROTO=none


Конфигурационный файл /etc/sysconfig/network-scripts/ifup-ppp
[root@pups /root]# less /etc/sysconfig/network-scripts/ifup-ppp
#!/bin/bash
PATH=/sbin:/usr/sbin:/bin:/usr/bin

cd /etc/sysconfig/network-scripts
. network-functions
. /etc/rc.d/init.d/functions

# ifup-post for PPP is handled through /etc/ppp/ip-up
if [ "${1}" = daemon ] ; then
  # we've been called from ppp-watch, so don't invoke it for persistence
  shift
else
  # just in case a full path to the configuration file is passed in
  CONFIG=$(basename $1)
  [ -f "${CONFIG}" ] || CONFIG=ifcfg-${1}
  source_config
#  exec /sbin/ppp-watch "${DEVICE}" "$@"
  /sbin/ppp-watch "${DEVICE}" "$@" &
  exit
fi

CONFIG=$1
[ -f "${CONFIG}" ] || CONFIG=ifcfg-${1}
source_config

if [ -z "${DISCONNECTTIMEOUT}" ]; then
  DISCONNECTTIMEOUT=2
fi

if [ -z "${RETRYTIMEOUT}" ]; then
  RETRYTIMEOUT=30
fi

if [ -z "${IDLETIMEOUT}" ]; then
  IDLETIMEOUT=600
fi

if [ "${2}" = "boot" -a "${ONBOOT}" = "no" ]; then
  exit
fi

[ -x /usr/sbin/pppd ] || {
  echo $"/usr/sbin/pppd does not exist or is not executable"
  echo $"ifup-ppp for ${DEVICE} exiting"
  logger -p daemon.info -t ifup-ppp \
    $"/usr/sbin/pppd does not exist or is not executable for ${DEVICE}"
  exit 1
}

PEERCONF=/etc/ppp/peers/${DEVNAME}

if [ ! -f ${PEERCONF} ]; then
  if [ -z "${WVDIALSECT}" ] ; then
    CHATSCRIPT=/etc/sysconfig/network-scripts/chat-${DEVNAME}
    [ -f ${CHATSCRIPT} ] || {
      CHATSCRIPT=/etc/sysconfig/network-scripts/chat-${PARENTDEVNAME}
    }
    [ -f ${CHATSCRIPT} ] || {
     echo $"/etc/sysconfig/network-scripts/chat-${DEVNAME} does not exist"
     echo $"ifup-ppp for ${DEVNAME} exiting"
     logger -p daemon.info -t ifup-ppp \
       $"/etc/sysconfig/network-scripts/chat-${DEVNAME} does not exist for ${DEVICE}"
     exit 1
    }
  fi
  logger -s -p daemon.notice -t ifup-ppp \
    $"Setting up a new ${PEERCONF} config file"
  if [ -f /etc/ppp/peers/${DEVICE} ]; then
    cp -f /etc/ppp/peers/${DEVICE} ${PEERCONF}
  else
    touch ${PEERCONF}
  fi
  if [ "${WVDIALSECT}" ]; then
    echo "connect \"/usr/bin/wvdial --remotename ${DEVNAME} --chat ${WVDIALSECT}\"" >> ${PEERCONF}
  else
    echo "connect \"/usr/sbin/chat $chatdbg -f ${CHATSCRIPT}\"" >> ${PEERCONF}
  fi
fi
    
opts="lock"
if [ "${HARDFLOWCTL}" != no ] ; then
  opts="$opts modem crtscts"
fi
if [ "${ESCAPECHARS}" != yes ] ; then
  opts="$opts asyncmap 00000000"
fi
if [ "${DEFROUTE}" != no ] ; then
  # pppd will no longer delete an existing default route
  # so we have to help it out a little here.
  route del default >/dev/null 2>&1
  opts="$opts defaultroute"
fi
if [ "${PEERDNS}" != no ] ; then
  opts="$opts usepeerdns"
fi
if [ -n "${MRU}" ] ; then
  opts="$opts mru ${MRU}"
fi
if [ -n "${MTU}" ] ; then
  opts="$opts mtu ${MTU}"
fi
if [ -n "${IPADDR}${REMIP}" ] ; then
  # if either IP address is set, the following will work.
  opts="$opts ${IPADDR}:${REMIP}"
fi
if [ -n "${PAPNAME}" ] ; then
  opts="$opts user ${PAPNAME} remotename ${DEVNAME}"
fi
if [ "${DEBUG}" = yes ] ; then
  opts="$opts debug"
  chatdbg="-v"
fi

if [ ${DEMAND} = yes ] ; then
  opts="$opts demand ktune idle ${IDLETIMEOUT} holdoff ${RETRYTIMEOUT}"
fi

(logger -p daemon.info -t ifup-ppp \
  $"pppd started for ${DEVNAME} on ${MODEMPORT} at ${LINESPEED}" &)&

exec /usr/sbin/pppd -detach $opts ${MODEMPORT} ${LINESPEED} \
    ipparam ${DEVNAME} linkname ${DEVNAME} call ${DEVNAME}\
    noauth \
    ${PPPOPTIONS}


Конфигурационный файл /etc/ipchains
[root@pups /root]# less /etc/sysconfig/ipchains
:input ACCEPT
:forward DENY
:output ACCEPT
-A forward -s 0.0.0.0/0.0.0.0 -d 0.0.0.0/0.0.0.0 -i ppp0 -p 17 -j ACCEPT
-A forward -s 172.18.160.0/255.255.255.0 -d 0.0.0.0/0.0.0.0 -i eth0 -p 17 -j MASQ
-A forward -s 172.18.160.0/255.255.255.0 -d 0.0.0.0/0.0.0.0 -i eth0 -p 1 -j MASQ
-A forward -s 172.18.160.0/255.255.255.0 -d 0.0.0.0/0.0.0.0 -i eth0 -p 6 -j MASQ
-A forward -s 172.18.161.0/255.255.255.0 -d 0.0.0.0/0.0.0.0 -i eth0 -p 1 -j MASQ
-A forward -s 172.18.161.0/255.255.255.0 -d 0.0.0.0/0.0.0.0 -i eth0 -p 6 -j MASQ
-A forward -s 172.18.161.0/255.255.255.0 -d 0.0.0.0/0.0.0.0 -i eth0 -p 17 -j MASQ