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Changing iptables locks server

Discussion in 'Plesk for Linux - 8.x and Older' started by jwdick, Oct 5, 2005.

  1. jwdick

    jwdick Guest

    0
     
    OS: Redhat 9
    Linux 2.4.20-021

    /etc/sysconfig/iptables is present

    When I run the following script to change my firewall settings ( which are non-existent now ), it echos that ipforwarding has been disabled, then the script hangs and the server locks and has to be rebooted.

    lsmod is not on my system so I cannot check what modules have been loaded

    The script I run is:
    #!/bin/sh
    #
    #

    set -e

    if [ -r /proc/sys/net/ipv4/ip_forward ]; then
    echo "Disabling IP forwarding"
    echo "0" > /proc/sys/net/ipv4/ip_forward
    fi

    /sbin/iptables -F

    /sbin/iptables -X

    /sbin/iptables -Z

    /sbin/iptables -P INPUT DROP

    /sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

    /sbin/iptables -A INPUT -m state --state INVALID -j DROP

    /sbin/iptables -P OUTPUT DROP

    /sbin/iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

    /sbin/iptables -A OUTPUT -m state --state INVALID -j DROP

    /sbin/iptables -P FORWARD DROP

    /sbin/iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT

    /sbin/iptables -A FORWARD -m state --state INVALID -j DROP

    /sbin/iptables -A INPUT -i lo -j ACCEPT

    /sbin/iptables -A OUTPUT -o lo -j ACCEPT

    /sbin/iptables -A FORWARD -i lo -o lo -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 8443 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 8880 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 80 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 443 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 21 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 22 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 25 -j ACCEPT
    /sbin/iptables -A INPUT -p tcp --dport 465 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 110 -j ACCEPT
    /sbin/iptables -A INPUT -p tcp --dport 995 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 143 -j ACCEPT
    /sbin/iptables -A INPUT -p tcp --dport 993 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 106 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 3306 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 5432 -j ACCEPT

    /sbin/iptables -A INPUT -p tcp --dport 9008 -j ACCEPT
    /sbin/iptables -A INPUT -p tcp --dport 9080 -j ACCEPT

    /sbin/iptables -A INPUT -p udp --dport 137 -j ACCEPT
    /sbin/iptables -A INPUT -p udp --dport 138 -j ACCEPT
    /sbin/iptables -A INPUT -p tcp --dport 139 -j ACCEPT
    /sbin/iptables -A INPUT -p tcp --dport 445 -j ACCEPT

    /sbin/iptables -A INPUT -p udp --dport 1194 -j ACCEPT

    /sbin/iptables -A INPUT -p udp --dport 53 -j ACCEPT
    /sbin/iptables -A INPUT -p tcp --dport 53 -j ACCEPT

    /sbin/iptables -A INPUT -p icmp --icmp-type 8/0 -s 12.214.251.53 -j ACCEPT
    /sbin/iptables -A INPUT -p icmp --icmp-type 8/0 -j DROP

    /sbin/iptables -A INPUT -j ACCEPT

    /sbin/iptables -A OUTPUT -j ACCEPT

    /sbin/iptables -A FORWARD -j DROP

    # End of script
    #


    Any help would be appreciated

    Jack
     
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