ïîäâåðæåííîñòü WL500gx DOS àòàêå ìóëüòèêàñòàìè

âñòðåòèë îñîáåííîñòü, êîòîðàÿ ïîçâîëÿåò íàãðóçèòü ïðîöåññîð wl500gx òàê, ÷òî îí íà÷íåò òåðÿòü ïàêåòû.
Åñëè íà WAN-èíòåðôåéñ wl500gx íàïðàâèòü òðàôèê ñ àäðåñàòîì 01:00:5E:XX:XX:XX ( http://solaris.opennet.ru/docs/RUS/i.../igmp_449.html ) ðàçìåðîì ïàêåòîâ ~60 áàéò, òî äîñòàòî÷íî òðàôèêà 500Êáàéò/ñ ÷òîáû ðîóòåð íà÷àë òåðÿòü ïîëîâèíó ïàêåòîâ LAN-WAN è LAN-WLAN è ñîîòâåòñòâåííî ìàðøðóòèçèðîâàòü áû ïðàêòè÷åñêè íå ìîã.

ïðèìåð tcpdump òàêèõ ïàêåòîâ
15:21:13.500268 00:12:a9:05:b5:c9 > 01:00:5e:61:82:65, ethertype IPv4 (0x0800), length 60: IP 195.91.140.149.28409 > 10.33.22.135.2146: . ack 1893601 win 64080

Ýòî ïðîèñõîäèò èç-çà òîãî, ÷òî íà èíòåðôåéñàõ wl500gx ïî óìîë÷àíèþ ðàçðåøåíà ðàáîòà ñ ìóëüòèêàñòîâûì òðàôèêîì. Åãî ìîæíî îòêëþ÷èòü ifconfig vlan1 -multicast (íà âñåõ íóæíûõ èíòåðôåéñàõ)