src/initscripts/system/firewall

   1 #!/bin/sh
   2
   3 . /etc/sysconfig/rc
   4 . ${rc_functions}
   5
   6 eval $(/usr/local/bin/readhash /var/ipfire/ppp/settings)
   7 eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
   8 eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings)
   9 ROOTHINTS="/etc/unbound/root.hints"
  10 IFACE=`/bin/cat /var/ipfire/red/iface 2> /dev/null | /usr/bin/tr -d '\012'`
  11
  12 if [ -f /var/ipfire/red/device ]; then
  13         DEVICE=`/bin/cat /var/ipfire/red/device 2> /dev/null | /usr/bin/tr -d '\012'`
  14 fi
  15
  16 function iptables() {
  17         /sbin/iptables --wait "$@"
  18 }
  19
  20 iptables_init() {
  21         # Flush all rules and delete all custom chains
  22         iptables -F
  23         iptables -t nat -F
  24         iptables -t mangle -F
  25         iptables -t raw -F
  26         iptables -X
  27         iptables -t nat -X
  28         iptables -t mangle -X
  29         iptables -t raw -X
  30
  31         # Set up policies
  32         iptables -P INPUT DROP
  33         iptables -P FORWARD DROP
  34         iptables -P OUTPUT ACCEPT
  35
  36         # Empty LOG_DROP and LOG_REJECT chains
  37         iptables -N LOG_DROP
  38         iptables -A LOG_DROP   -m limit --limit 10/second -j LOG
  39         iptables -A LOG_DROP   -j DROP
  40         iptables -N LOG_REJECT
  41         iptables -A LOG_REJECT -m limit --limit 10/second -j LOG
  42         iptables -A LOG_REJECT -j REJECT
  43
  44         # This chain will log, then DROPs packets with certain bad combinations
  45         # of flags might indicate a port-scan attempt (xmas, null, etc)
  46         iptables -N PSCAN
  47         if [ "$DROPPORTSCAN" == "on" ]; then
  48                 iptables -A PSCAN -p tcp  -m limit --limit 10/second -j LOG --log-prefix "DROP_TCP Scan " -m comment --comment "DROP_TCP PScan"
  49                 iptables -A PSCAN -p udp  -m limit --limit 10/second -j LOG --log-prefix "DROP_UDP Scan " -m comment --comment "DROP_UDP PScan"
  50                 iptables -A PSCAN -p icmp -m limit --limit 10/second -j LOG --log-prefix "DROP_ICMP Scan " -m comment --comment "DROP_ICMP PScan"
  51                 iptables -A PSCAN -f      -m limit --limit 10/second -j LOG --log-prefix "DROP_FRAG Scan " -m comment --comment "DROP_FRAG PScan"
  52         fi
  53         iptables -A PSCAN -j DROP -m comment --comment "DROP_PScan"
  54
  55         # New tcp packets without SYN set - could well be an obscure type of port scan
  56         # that's not covered above, may just be a broken windows machine
  57         iptables -N NEWNOTSYN
  58         if [ "$DROPNEWNOTSYN" == "on" ]; then
  59                 iptables -A NEWNOTSYN  -m limit --limit 10/second -j LOG  --log-prefix "DROP_NEWNOTSYN "
  60         fi
  61         iptables -A NEWNOTSYN  -j DROP -m comment --comment "DROP_NEWNOTSYN"
  62
  63         # Chain to contain all the rules relating to bad TCP flags
  64         iptables -N BADTCP
  65
  66         # Don't check loopback
  67         iptables -A BADTCP -i lo -j RETURN
  68
  69         # Disallow packets frequently used by port-scanners
  70         # NMAP FIN/URG/PSH (XMAS scan)
  71         iptables -A BADTCP -p tcp --tcp-flags ALL FIN,URG,PSH -j PSCAN
  72         # SYN/RST/ACK/FIN/URG
  73         iptables -A BADTCP -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j PSCAN
  74         # ALL/ALL
  75         iptables -A BADTCP -p tcp --tcp-flags ALL ALL -j PSCAN
  76         # FIN Stealth
  77         iptables -A BADTCP -p tcp --tcp-flags ALL FIN -j PSCAN
  78         # SYN/RST (also catches xmas variants that set SYN+RST+...)
  79         iptables -A BADTCP -p tcp --tcp-flags SYN,RST SYN,RST -j PSCAN
  80         # SYN/FIN (QueSO or nmap OS probe)
  81         iptables -A BADTCP -p tcp --tcp-flags SYN,FIN SYN,FIN -j PSCAN
  82         # Null
  83         iptables -A BADTCP -p tcp --tcp-flags ALL NONE -j PSCAN
  84         # NEW TCP without SYN
  85         iptables -A BADTCP -p tcp ! --syn -m conntrack --ctstate NEW -j NEWNOTSYN
  86
  87         iptables -A INPUT   -p tcp -j BADTCP
  88         iptables -A FORWARD -p tcp -j BADTCP
  89
  90         # Connection tracking chains
  91         iptables -N CONNTRACK
  92         iptables -A CONNTRACK -m conntrack --ctstate ESTABLISHED -j ACCEPT
  93         iptables -A CONNTRACK -m conntrack --ctstate INVALID -j DROP
  94         iptables -A CONNTRACK -p icmp -m conntrack --ctstate RELATED -j ACCEPT
  95         iptables -t raw -N CONNTRACK
  96         iptables -t raw -A PREROUTING -j CONNTRACK
  97
  98         # Conntrack helpers (https://home.regit.org/netfilter-en/secure-use-of-helpers/)
  99
 100         # SIP
 101         if [ "${CONNTRACK_SIP}" = "on" ]; then
 102                 modprobe nf_nat_sip
 103                 iptables -A CONNTRACK -m conntrack --ctstate RELATED \
 104                         -m helper --helper sip -j ACCEPT
 105                 for proto in udp tcp; do
 106                         iptables -t raw -A CONNTRACK -p "${proto}" --dport 5060 -j CT --helper sip
 107                 done
 108         fi
 109
 110         # H.323
 111         if [ "${CONNTRACK_H323}" = "on" ]; then
 112                 modprobe nf_nat_h323
 113                 iptables -A CONNTRACK -m conntrack --ctstate RELATED \
 114                         -m helper --helper h323 -j ACCEPT
 115
 116                 # Gatekeeper RAS
 117                 iptables -t raw -A CONNTRACK -p udp --dport 1719 -j CT --helper RAS
 118
 119                 # Q.931
 120                 iptables -t raw -A CONNTRACK -p tcp --dport 1720 -j CT --helper Q.931
 121         fi
 122
 123         # FTP
 124         if [ "${CONNTRACK_FTP}" = "on" ]; then
 125                 modprobe nf_nat_ftp
 126                 iptables -A CONNTRACK -m conntrack --ctstate RELATED \
 127                         -m helper --helper ftp -p tcp --dport 1024: -j ACCEPT
 128                 iptables -t raw -A CONNTRACK -p tcp --dport 21 -j CT --helper ftp
 129         fi
 130
 131         # PPTP
 132         if [ "${CONNTRACK_PPTP}" = "on" ]; then
 133                 modprobe nf_nat_pptp
 134                 iptables -A CONNTRACK -m conntrack --ctstate RELATED \
 135                         -m helper --helper pptp -j ACCEPT
 136                 iptables -t raw -A CONNTRACK -p tcp --dport 1723 -j CT --helper pptp
 137         fi
 138
 139         # TFTP
 140         if [ "${CONNTRACK_TFTP}" = "on" ]; then
 141                 modprobe nf_nat_tftp
 142                 iptables -A CONNTRACK -m conntrack --ctstate RELATED \
 143                         -m helper --helper tftp -j ACCEPT
 144                 iptables -t raw -A CONNTRACK -p udp --dport 69 -j CT --helper tftp
 145         fi
 146
 147         # IRC
 148         if [ "${CONNTRACK_IRC}" = "on" ]; then
 149                 modprobe nf_nat_irc
 150                 iptables -A CONNTRACK -m conntrack --ctstate RELATED \
 151                         -m helper --helper irc -j ACCEPT
 152                 iptables -t raw -A CONNTRACK -p tcp --dport 6667 -j CT --helper irc
 153         fi
 154
 155         # Amanda
 156         if [ "${CONNTRACK_AMANDA}" = "on" ]; then
 157                 modprobe nf_nat_amanda
 158                 iptables -A CONNTRACK -m conntrack --ctstate RELATED \
 159                         -m helper --helper amanda -j ACCEPT
 160                 iptables -t raw -A CONNTRACK -p tcp -j CT --helper amanda
 161         fi
 162
 163         # Fix for braindead ISP's
 164         iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
 165
 166         # CUSTOM chains, can be used by the users themselves
 167         iptables -N CUSTOMINPUT
 168         iptables -A INPUT -j CUSTOMINPUT
 169         iptables -N CUSTOMFORWARD
 170         iptables -A FORWARD -j CUSTOMFORWARD
 171         iptables -N CUSTOMOUTPUT
 172         iptables -A OUTPUT -j CUSTOMOUTPUT
 173         iptables -t nat -N CUSTOMPREROUTING
 174         iptables -t nat -A PREROUTING -j CUSTOMPREROUTING
 175         iptables -t nat -N CUSTOMPOSTROUTING
 176         iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING
 177
 178         # P2PBLOCK
 179         iptables -N P2PBLOCK
 180         iptables -A INPUT -j P2PBLOCK
 181         iptables -A FORWARD -j P2PBLOCK
 182         iptables -A OUTPUT -j P2PBLOCK
 183
 184         # Guardian (IPS) chains
 185         iptables -N GUARDIAN
 186         iptables -A INPUT -j GUARDIAN
 187         iptables -A FORWARD -j GUARDIAN
 188
 189         # IPS (suricata) chains
 190         iptables -N IPS_INPUT
 191         iptables -N IPS_FORWARD
 192         iptables -N IPS_OUTPUT
 193         iptables -A INPUT -j IPS_INPUT
 194         iptables -A FORWARD -j IPS_FORWARD
 195         iptables -A OUTPUT -j IPS_OUTPUT
 196
 197         # Block non-established IPsec networks
 198         iptables -N IPSECBLOCK
 199         iptables -A FORWARD -m policy --dir out --pol none -j IPSECBLOCK
 200         iptables -A OUTPUT  -m policy --dir out --pol none -j IPSECBLOCK
 201
 202         # Block OpenVPN transfer networks
 203         iptables -N OVPNBLOCK
 204         iptables -A INPUT   -i tun+ -j OVPNBLOCK
 205         iptables -A FORWARD -i tun+ -j OVPNBLOCK
 206         iptables -A FORWARD -o tun+ -j OVPNBLOCK
 207
 208         # OpenVPN transfer network translation
 209         iptables -t nat -N OVPNNAT
 210         iptables -t nat -A POSTROUTING -j OVPNNAT
 211
 212         # IPTV chains for IGMPPROXY
 213         iptables -N IPTVINPUT
 214         iptables -A INPUT -j IPTVINPUT
 215         iptables -N IPTVFORWARD
 216         iptables -A FORWARD -j IPTVFORWARD
 217
 218         # Allow to ping the firewall.
 219         iptables -N ICMPINPUT
 220         iptables -A INPUT -j ICMPINPUT
 221         iptables -A ICMPINPUT -p icmp --icmp-type 8 -j ACCEPT
 222
 223         # Accept everything on loopback
 224         iptables -N LOOPBACK
 225         iptables -A LOOPBACK -i lo -j ACCEPT
 226         iptables -A LOOPBACK -o lo -j ACCEPT
 227
 228         # Filter all packets with loopback addresses on non-loopback interfaces.
 229         iptables -A LOOPBACK -s 127.0.0.0/8 -j DROP
 230         iptables -A LOOPBACK -d 127.0.0.0/8 -j DROP
 231
 232         for i in INPUT FORWARD OUTPUT; do
 233                 iptables -A ${i} -j LOOPBACK
 234         done
 235
 236         # Captive portal
 237         iptables -N CAPTIVE_PORTAL
 238         iptables -N CAPTIVE_PORTAL_CLIENTS
 239         for i in INPUT FORWARD; do
 240                 iptables -A ${i} -j CAPTIVE_PORTAL
 241         done
 242
 243         # Accept everything connected
 244         for i in INPUT FORWARD OUTPUT; do
 245                 iptables -A ${i} -j CONNTRACK
 246         done
 247
 248         # Allow DHCP
 249         iptables -N DHCPINPUT
 250         iptables -A DHCPINPUT -p udp --sport 68 --dport 67 -j ACCEPT
 251         iptables -A DHCPINPUT -p tcp --sport 68 --dport 67 -j ACCEPT
 252
 253         iptables -N DHCPOUTPUT
 254         iptables -A DHCPOUTPUT -p udp --sport 67 --dport 68 -j ACCEPT
 255         iptables -A DHCPOUTPUT -p tcp --sport 67 --dport 68 -j ACCEPT
 256
 257         # Allow DHCP on GREEN
 258         iptables -N DHCPGREENINPUT
 259         iptables -N DHCPGREENOUTPUT
 260         if [ -n "${GREEN_DEV}" ]; then
 261                 iptables -A INPUT  -i "${GREEN_DEV}" -j DHCPGREENINPUT
 262                 iptables -A OUTPUT -o "${GREEN_DEV}" -j DHCPGREENOUTPUT
 263         fi
 264
 265         # allow DHCP on BLUE to be turned on/off
 266         iptables -N DHCPBLUEINPUT
 267         iptables -N DHCPBLUEOUTPUT
 268         if [ -n "${BLUE_DEV}" ]; then
 269                 iptables -A INPUT  -i "${BLUE_DEV}" -j DHCPBLUEINPUT
 270                 iptables -A OUTPUT -o "${BLUE_DEV}" -j DHCPBLUEOUTPUT
 271         fi
 272
 273         # GeoIP block
 274         iptables -N GEOIPBLOCK
 275         iptables -A INPUT -j GEOIPBLOCK
 276         iptables -A FORWARD -j GEOIPBLOCK
 277
 278         # trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything
 279         iptables -N IPSECINPUT
 280         iptables -N IPSECFORWARD
 281         iptables -N IPSECOUTPUT
 282         iptables -A INPUT -j IPSECINPUT
 283         iptables -A FORWARD -j IPSECFORWARD
 284         iptables -A OUTPUT -j IPSECOUTPUT
 285         iptables -t nat -N IPSECNAT
 286         iptables -t nat -A POSTROUTING -j IPSECNAT
 287
 288         # localhost and ethernet.
 289         # Always allow accessing the web GUI from GREEN.
 290         iptables -N GUIINPUT
 291         iptables -A INPUT -j GUIINPUT
 292         if [ -n "${GREEN_DEV}" ]; then
 293                 iptables -A GUIINPUT -i "${GREEN_DEV}" -p tcp --dport 444 -j ACCEPT
 294         fi
 295
 296         # WIRELESS chains
 297         iptables -N WIRELESSINPUT
 298         iptables -A INPUT -m conntrack --ctstate NEW -j WIRELESSINPUT
 299         iptables -N WIRELESSFORWARD
 300         iptables -A FORWARD -m conntrack --ctstate NEW -j WIRELESSFORWARD
 301
 302         # OpenVPN
 303         iptables -N OVPNINPUT
 304         iptables -A INPUT -j OVPNINPUT
 305
 306         # Tor (inbound and outbound)
 307         iptables -N TOR_INPUT
 308         iptables -A INPUT -j TOR_INPUT
 309         iptables -N TOR_OUTPUT
 310         iptables -A OUTPUT -j TOR_OUTPUT
 311
 312         # Allow outgoing DNS traffic (TCP and UDP) to DNS root servers
 313         local rootserverips="$( awk '/\s+A\s+/ { print $4 }' ${ROOTHINTS} )"
 314         ipset -N root-servers iphash
 315
 316         for ip in "${rootserverips[@]}"; do
 317                 ipset add root-servers $ip
 318         done
 319
 320         iptables -A OUTPUT -m set --match-set root-servers dst -p tcp --dport 53 -j ACCEPT
 321         iptables -A OUTPUT -m set --match-set root-servers dst -p udp --dport 53 -j ACCEPT
 322
 323         # Jump into the actual firewall ruleset.
 324         iptables -N INPUTFW
 325         iptables -A INPUT -j INPUTFW
 326
 327         iptables -N OUTGOINGFW
 328         iptables -A OUTPUT -j OUTGOINGFW
 329
 330         iptables -N FORWARDFW
 331         iptables -A FORWARD -j FORWARDFW
 332
 333         # SNAT rules
 334         iptables -t nat -N NAT_SOURCE
 335         iptables -t nat -A POSTROUTING -j NAT_SOURCE
 336
 337         # Captive Portal
 338         iptables -t nat -N CAPTIVE_PORTAL
 339         iptables -t nat -A PREROUTING -j CAPTIVE_PORTAL
 340
 341         # Custom prerouting chains (for transparent proxy)
 342         iptables -t nat -N SQUID
 343         iptables -t nat -A PREROUTING -j SQUID
 344
 345         # DNAT rules
 346         iptables -t nat -N NAT_DESTINATION
 347         iptables -t nat -A PREROUTING -j NAT_DESTINATION
 348         iptables -t nat -A OUTPUT -j NAT_DESTINATION
 349
 350         iptables -t mangle -N NAT_DESTINATION
 351         iptables -t mangle -A PREROUTING -j NAT_DESTINATION
 352
 353         iptables -t nat -N NAT_DESTINATION_FIX
 354         iptables -t nat -A POSTROUTING -j NAT_DESTINATION_FIX
 355
 356         if [ -n "${GREEN_ADDRESS}" ]; then
 357                 iptables -t nat -A NAT_DESTINATION_FIX \
 358                         -m mark --mark 1 -j SNAT --to-source "${GREEN_ADDRESS}"
 359         fi
 360
 361         if [ -n "${BLUE_ADDRESS}" ]; then
 362                 iptables -t nat -A NAT_DESTINATION_FIX \
 363                         -m mark --mark 2 -j SNAT --to-source "${BLUE_ADDRESS}"
 364         fi
 365
 366         if [ -n "${ORANGE_ADDRESS}" ]; then
 367                 iptables -t nat -A NAT_DESTINATION_FIX \
 368                         -m mark --mark 3 -j SNAT --to-source "${ORANGE_ADDRESS}"
 369         fi
 370
 371         # upnp chain for our upnp daemon
 372         iptables -t nat -N UPNPFW
 373         iptables -t nat -A PREROUTING -j UPNPFW
 374         iptables -N UPNPFW
 375         iptables -A FORWARD -m conntrack --ctstate NEW -j UPNPFW
 376
 377         # RED chain, used for the red interface
 378         iptables -N REDINPUT
 379         iptables -A INPUT -j REDINPUT
 380         iptables -N REDFORWARD
 381         iptables -A FORWARD -j REDFORWARD
 382         iptables -t nat -N REDNAT
 383         iptables -t nat -A POSTROUTING -j REDNAT
 384
 385         # Populate IPsec chains
 386         /usr/lib/firewall/ipsec-policy
 387
 388         # Apply OpenVPN firewall rules
 389         /usr/local/bin/openvpnctrl --firewall-rules
 390
 391         # run wirelessctrl
 392         /usr/local/bin/wirelessctrl
 393
 394         # run captivectrl
 395         /usr/local/bin/captivectrl
 396
 397         # POLICY CHAIN
 398         iptables -N POLICYIN
 399         iptables -A INPUT -j POLICYIN
 400         iptables -N POLICYFWD
 401         iptables -A FORWARD -j POLICYFWD
 402         iptables -N POLICYOUT
 403         iptables -A OUTPUT -j POLICYOUT
 404
 405         # Initialize firewall policies.
 406         /usr/sbin/firewall-policy
 407
 408         # Install firewall rules for the red interface.
 409         iptables_red_up
 410
 411         # If red has not been brought up yet, we will
 412         # add the blocking rules for MASQUERADE
 413         if [ ! -e "/var/ipfire/red/active" ]; then
 414                 iptables_red_down
 415         fi
 416 }
 417
 418 iptables_red_up() {
 419         iptables -F REDINPUT
 420         iptables -F REDFORWARD
 421         iptables -t nat -F REDNAT
 422
 423         # PPPoE / PPTP Device
 424         if [ "$IFACE" != "" ]; then
 425                 # PPPoE / PPTP
 426                 if [ "$DEVICE" != "" ]; then
 427                         iptables -A REDINPUT -i $DEVICE -j ACCEPT
 428                 fi
 429                 if [ "$RED_TYPE" == "PPTP" -o "$RED_TYPE" == "PPPOE" ]; then
 430                         if [ "$RED_DEV" != "" ]; then
 431                                 iptables -A REDINPUT -i $RED_DEV -j ACCEPT
 432                         fi
 433                 fi
 434         fi
 435
 436         # PPTP over DHCP
 437         if [ "$DEVICE" != "" -a "$TYPE" == "PPTP" -a "$METHOD" == "DHCP" ]; then
 438                 iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
 439                 iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT
 440         fi
 441
 442         if [ "$IFACE" != "" -a -f /var/ipfire/red/active ]; then
 443                 # DHCP
 444                 if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then
 445                         iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
 446                         iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
 447                 fi
 448                 if [ "$METHOD" == "DHCP"  -a "$PROTOCOL" == "RFC1483" ]; then
 449                         iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
 450                         iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT
 451                 fi
 452
 453                 # Outgoing masquerading (don't masqerade IPSEC (mark 50))
 454                 iptables -t nat -A REDNAT -m mark --mark 50 -o $IFACE -j RETURN
 455
 456                 if [ "${IFACE}" = "${GREEN_DEV}" ]; then
 457                         iptables -t nat -A REDNAT -i "${GREEN_DEV}" -o "${IFACE}" -j RETURN
 458                 fi
 459
 460                 local NO_MASQ_NETWORKS
 461
 462                 if [ "${MASQUERADE_GREEN}" = "off" ]; then
 463                         NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${GREEN_NETADDRESS}/${GREEN_NETMASK}"
 464                 fi
 465
 466                 if [ "${MASQUERADE_BLUE}" = "off" ]; then
 467                         NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${BLUE_NETADDRESS}/${BLUE_NETMASK}"
 468                 fi
 469
 470                 if [ "${MASQUERADE_ORANGE}" = "off" ]; then
 471                         NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${ORANGE_NETADDRESS}/${ORANGE_NETMASK}"
 472                 fi
 473
 474                 local network
 475                 for network in ${NO_MASQ_NETWORKS}; do
 476                         iptables -t nat -A REDNAT -s "${network}" -o "${IFACE}" -j RETURN
 477                 done
 478
 479                 # Masquerade everything else
 480                 iptables -t nat -A REDNAT -o $IFACE -j MASQUERADE
 481         fi
 482
 483         # Reload all rules.
 484         /usr/local/bin/firewallctrl
 485 }
 486
 487 iptables_red_down() {
 488         # Prohibit packets to reach the masquerading rule
 489         # while the WAN interface is down - this is required to
 490         # circumvent udp related NAT issues
 491         # http://forum.ipfire.org/index.php?topic=11127.0
 492         if [ -n "${IFACE}" ]; then
 493                 iptables -F REDFORWARD
 494                 iptables -A REDFORWARD -o "${IFACE}" -j DROP
 495         fi
 496
 497         # Reload all rules.
 498         /usr/local/bin/firewallctrl
 499 }
 500
 501 # See how we were called.
 502 case "$1" in
 503   start)
 504         boot_mesg "Setting up firewall"
 505         iptables_init
 506         evaluate_retval
 507         ;;
 508   reload|up)
 509         boot_mesg "Reloading firewall"
 510         iptables_red_up
 511         evaluate_retval
 512         ;;
 513   down)
 514         boot_mesg "Disabling firewall access to RED"
 515         iptables_red_down
 516         evaluate_retval
 517         ;;
 518   restart)
 519         $0 start
 520         ;;
 521   *)
 522         echo "Usage: $0 {start|reload|restart}"
 523         exit 1
 524         ;;
 525 esac
 526
 527 exit 0