void iptables_fw_clear_platservers(void) { iptables_do_command("-t filter -F " TABLE_WIFIDOG_PLATSERVERS); iptables_do_command("-t nat -F " TABLE_WIFIDOG_PLATSERVERS); }
void iptables_fw_clear_portalservers(void) { iptables_do_command("-t filter -F " TABLE_WIFIDOG_PORTALSERVERS); iptables_do_command("-t nat -F " TABLE_WIFIDOG_PORTALSERVERS); }
/** Remove the firewall rules * This is used when we do a clean shutdown of WiFiDog and when it starts to make * sure there are no rules left over */ int iptables_fw_destroy(void) { fw_quiet = 1; debug(LOG_DEBUG, "Destroying our iptables entries"); /* * * Everything in the MANGLE table * */ debug(LOG_DEBUG, "Destroying chains in the MANGLE table"); iptables_fw_destroy_mention("mangle", "PREROUTING", TABLE_WIFIDOG_TRUSTED); iptables_fw_destroy_mention("mangle", "PREROUTING", TABLE_WIFIDOG_OUTGOING); iptables_fw_destroy_mention("mangle", "POSTROUTING", TABLE_WIFIDOG_INCOMING); iptables_do_command("-t mangle -F " TABLE_WIFIDOG_TRUSTED); iptables_do_command("-t mangle -F " TABLE_WIFIDOG_OUTGOING); iptables_do_command("-t mangle -F " TABLE_WIFIDOG_INCOMING); iptables_do_command("-t mangle -X " TABLE_WIFIDOG_TRUSTED); iptables_do_command("-t mangle -X " TABLE_WIFIDOG_OUTGOING); iptables_do_command("-t mangle -X " TABLE_WIFIDOG_INCOMING); /* * * Everything in the NAT table * */ debug(LOG_DEBUG, "Destroying chains in the NAT table"); iptables_fw_destroy_mention("nat", "PREROUTING", TABLE_WIFIDOG_OUTGOING); iptables_do_command("-t nat -F " TABLE_WIFIDOG_AUTHSERVERS); iptables_do_command("-t nat -F " TABLE_WIFIDOG_OUTGOING); iptables_do_command("-t nat -F " TABLE_WIFIDOG_WIFI_TO_ROUTER); iptables_do_command("-t nat -F " TABLE_WIFIDOG_WIFI_TO_INTERNET); iptables_do_command("-t nat -F " TABLE_WIFIDOG_GLOBAL); iptables_do_command("-t nat -F " TABLE_WIFIDOG_UNKNOWN); iptables_do_command("-t nat -X " TABLE_WIFIDOG_AUTHSERVERS); iptables_do_command("-t nat -X " TABLE_WIFIDOG_OUTGOING); iptables_do_command("-t nat -X " TABLE_WIFIDOG_WIFI_TO_ROUTER); iptables_do_command("-t nat -X " TABLE_WIFIDOG_WIFI_TO_INTERNET); iptables_do_command("-t nat -X " TABLE_WIFIDOG_GLOBAL); iptables_do_command("-t nat -X " TABLE_WIFIDOG_UNKNOWN); /* * * Everything in the FILTER table * */ debug(LOG_DEBUG, "Destroying chains in the FILTER table"); iptables_fw_destroy_mention("filter", "FORWARD", TABLE_WIFIDOG_WIFI_TO_INTERNET); iptables_do_command("-t filter -F " TABLE_WIFIDOG_WIFI_TO_INTERNET); iptables_do_command("-t filter -F " TABLE_WIFIDOG_AUTHSERVERS); iptables_do_command("-t filter -F " TABLE_WIFIDOG_LOCKED); iptables_do_command("-t filter -F " TABLE_WIFIDOG_GLOBAL); iptables_do_command("-t filter -F " TABLE_WIFIDOG_VALIDATE); iptables_do_command("-t filter -F " TABLE_WIFIDOG_KNOWN); iptables_do_command("-t filter -F " TABLE_WIFIDOG_UNKNOWN); iptables_do_command("-t filter -X " TABLE_WIFIDOG_WIFI_TO_INTERNET); iptables_do_command("-t filter -X " TABLE_WIFIDOG_AUTHSERVERS); iptables_do_command("-t filter -X " TABLE_WIFIDOG_LOCKED); iptables_do_command("-t filter -X " TABLE_WIFIDOG_GLOBAL); iptables_do_command("-t filter -X " TABLE_WIFIDOG_VALIDATE); iptables_do_command("-t filter -X " TABLE_WIFIDOG_KNOWN); iptables_do_command("-t filter -X " TABLE_WIFIDOG_UNKNOWN); return 1; }
void iptables_fw_clear_authservers(void) { iptables_do_command("-t filter -F " TABLE_WIFIDOG_AUTHSERVERS); iptables_do_command("-t nat -F " TABLE_WIFIDOG_AUTHSERVERS); }
/** Initialize the firewall rules */ int iptables_fw_init(void) { const s_config *config; char * ext_interface = NULL; int gw_port = 0; t_trusted_mac *p; t_trusted_host *q; int proxy_port; fw_quiet = 0; LOCK_CONFIG(); config = config_get_config(); gw_port = config->gw_port; if (config->external_interface) { ext_interface = safe_strdup(config->external_interface); } else { ext_interface = get_ext_iface(); } if (ext_interface == NULL) { UNLOCK_CONFIG(); debug(LOG_ERR, "FATAL: no external interface"); return 0; } /* * * Everything in the MANGLE table * */ /* Create new chains */ iptables_do_command("-t mangle -N " TABLE_WIFIDOG_TRUSTED); iptables_do_command("-t mangle -N " TABLE_WIFIDOG_OUTGOING); iptables_do_command("-t mangle -N " TABLE_WIFIDOG_INCOMING); /* Assign links and rules to these new chains */ iptables_do_command("-t mangle -I PREROUTING 1 -i %s -j " TABLE_WIFIDOG_OUTGOING, config->gw_interface); iptables_do_command("-t mangle -I PREROUTING 1 -i %s -j " TABLE_WIFIDOG_TRUSTED, config->gw_interface);//this rule will be inserted before the prior one iptables_do_command("-t mangle -I POSTROUTING 1 -o %s -j " TABLE_WIFIDOG_INCOMING, config->gw_interface); for (p = config->trustedmaclist; p != NULL; p = p->next) iptables_do_command("-t mangle -A " TABLE_WIFIDOG_TRUSTED " -m mac --mac-source %s -j MARK --set-mark %d", p->mac, FW_MARK_KNOWN); for (q = config->trustedhostlist; q != NULL; q = q->next) iptables_do_command("-t mangle -A " TABLE_WIFIDOG_TRUSTED " -p tcp -d %s -j MARK --set-mark %d", q->host, FW_MARK_KNOWN); /* * * Everything in the NAT table * */ /* Create new chains */ iptables_do_command("-t nat -N " TABLE_WIFIDOG_OUTGOING); iptables_do_command("-t nat -N " TABLE_WIFIDOG_WIFI_TO_ROUTER); iptables_do_command("-t nat -N " TABLE_WIFIDOG_WIFI_TO_INTERNET); iptables_do_command("-t nat -N " TABLE_WIFIDOG_GLOBAL); iptables_do_command("-t nat -N " TABLE_WIFIDOG_UNKNOWN); iptables_do_command("-t nat -N " TABLE_WIFIDOG_AUTHSERVERS); /* Assign links and rules to these new chains */ iptables_do_command("-t nat -A PREROUTING -i %s -j " TABLE_WIFIDOG_OUTGOING, config->gw_interface); iptables_do_command("-t nat -A " TABLE_WIFIDOG_OUTGOING " -d %s -j " TABLE_WIFIDOG_WIFI_TO_ROUTER, config->gw_address); iptables_do_command("-t nat -A " TABLE_WIFIDOG_WIFI_TO_ROUTER " -j ACCEPT"); iptables_do_command("-t nat -A " TABLE_WIFIDOG_OUTGOING " -j " TABLE_WIFIDOG_WIFI_TO_INTERNET); if((proxy_port=config_get_config()->proxy_port) != 0){ debug(LOG_DEBUG,"Proxy port set, setting proxy rule"); iptables_do_command("-t nat -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -p tcp --dport 80 -m mark --mark 0x%u -j REDIRECT --to-port %u", FW_MARK_KNOWN, proxy_port); iptables_do_command("-t nat -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -p tcp --dport 80 -m mark --mark 0x%u -j REDIRECT --to-port %u", FW_MARK_PROBATION, proxy_port); } iptables_do_command("-t nat -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -m mark --mark 0x%u -j ACCEPT", FW_MARK_KNOWN); iptables_do_command("-t nat -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -m mark --mark 0x%u -j ACCEPT", FW_MARK_PROBATION); iptables_do_command("-t nat -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -j " TABLE_WIFIDOG_UNKNOWN); iptables_do_command("-t nat -A " TABLE_WIFIDOG_UNKNOWN " -j " TABLE_WIFIDOG_AUTHSERVERS); iptables_do_command("-t nat -A " TABLE_WIFIDOG_UNKNOWN " -j " TABLE_WIFIDOG_GLOBAL); iptables_do_command("-t nat -A " TABLE_WIFIDOG_UNKNOWN " -p tcp --dport 80 -j REDIRECT --to-ports %d", gw_port); /* * * Everything in the FILTER table * */ /* Create new chains */ iptables_do_command("-t filter -N " TABLE_WIFIDOG_WIFI_TO_INTERNET); iptables_do_command("-t filter -N " TABLE_WIFIDOG_AUTHSERVERS); iptables_do_command("-t filter -N " TABLE_WIFIDOG_LOCKED); iptables_do_command("-t filter -N " TABLE_WIFIDOG_GLOBAL); iptables_do_command("-t filter -N " TABLE_WIFIDOG_VALIDATE); iptables_do_command("-t filter -N " TABLE_WIFIDOG_KNOWN); iptables_do_command("-t filter -N " TABLE_WIFIDOG_UNKNOWN); /* Assign links and rules to these new chains */ /* Insert at the beginning */ iptables_do_command("-t filter -I FORWARD -i %s -j " TABLE_WIFIDOG_WIFI_TO_INTERNET, config->gw_interface); iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -m state --state INVALID -j DROP"); /* XXX: Why this? it means that connections setup after authentication stay open even after the connection is done... iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -m state --state RELATED,ESTABLISHED -j ACCEPT");*/ //Won't this rule NEVER match anyway?!?!? benoitg, 2007-06-23 //iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -i %s -m state --state NEW -j DROP", ext_interface); /* TCPMSS rule for PPPoE */ iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -o %s -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu", ext_interface); iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -j " TABLE_WIFIDOG_AUTHSERVERS); iptables_fw_set_authservers(); iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -m mark --mark 0x%u -j " TABLE_WIFIDOG_LOCKED, FW_MARK_LOCKED); iptables_load_ruleset("filter", "locked-users", TABLE_WIFIDOG_LOCKED); iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -j " TABLE_WIFIDOG_GLOBAL); iptables_load_ruleset("filter", "global", TABLE_WIFIDOG_GLOBAL); iptables_load_ruleset("nat", "global", TABLE_WIFIDOG_GLOBAL); iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -m mark --mark 0x%u -j " TABLE_WIFIDOG_VALIDATE, FW_MARK_PROBATION); iptables_load_ruleset("filter", "validating-users", TABLE_WIFIDOG_VALIDATE); iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -m mark --mark 0x%u -j " TABLE_WIFIDOG_KNOWN, FW_MARK_KNOWN); iptables_load_ruleset("filter", "known-users", TABLE_WIFIDOG_KNOWN); iptables_do_command("-t filter -A " TABLE_WIFIDOG_WIFI_TO_INTERNET " -j " TABLE_WIFIDOG_UNKNOWN); iptables_load_ruleset("filter", "unknown-users", TABLE_WIFIDOG_UNKNOWN); iptables_do_command("-t filter -A " TABLE_WIFIDOG_UNKNOWN " -j REJECT --reject-with icmp-port-unreachable"); UNLOCK_CONFIG(); return 1; }