Время от времени выскакивает в логах вот это
WAN Type: PPTP (V3.21RU )
Display time: Sunday October 14, 2007 16:25:18


Sunday October 14, 2007 01:08:00 Set Device Time to: Sun Oct 14 01:08:00 2007
Sunday October 14, 2007 10:52:42 Unrecognized attempt blocked from 192.168.128.194:47726 to 172.16.41.96 TCP:113
Sunday October 14, 2007 10:52:45 Unrecognized attempt blocked from 192.168.128.194:47726 to 172.16.41.96 TCP:113
Sunday October 14, 2007 10:52:51 Unrecognized attempt blocked from 192.168.128.194:47726 to 172.16.41.96 TCP:113
Sunday October 14, 2007 15:00:47 Unrecognized attempt blocked from 192.168.128.194:48446 to 172.16.41.96 TCP:113
Sunday October 14, 2007 15:00:50 Unrecognized attempt blocked from 192.168.128.194:48446 to 172.16.41.96 TCP:113
Sunday October 14, 2007 15:00:56 Unrecognized attempt blocked from 192.168.128.194:48446 to 172.16.41.96 TCP:113
Sunday October 14, 2007 15:05:21 Unrecognized attempt blocked from 192.168.128.194:48471 to 172.16.41.96 TCP:113
Sunday October 14, 2007 15:05:24 Unrecognized attempt blocked from 192.168.128.194:48471 to 172.16.41.96 TCP:113
Sunday October 14, 2007 15:05:30 Unrecognized attempt blocked from 192.168.128.194:48471 to 172.16.41.96 TCP:113

Что это может быть...Ошибка роутера или атака из сети?
Firmware Version : V3.21RU , Mon, Aug 20 2007
LAN
MAC Address 00-17-9A-FA-C1-57
IP Address 192.168.0.1
Subnet Mask 255.255.255.0
DHCP Server Enabled

WAN
MAC Address 00-17-9A-FA-C1-56
Connection PPTP Connected.

IP Address 172.16.41.96
Connection Time 18:14:40
Subnet Mask 255.255.255.255
Gateway 172.16.41.96
Domain Name Server 192.168.128.197

Кто-то пытается подключиться на 113 порт роутера. Можете не обращать внимания.

У меня на 604 в логе при поднятии pptp стала появлятся (постоянно - 1 раз за подъем) след-я строка:

Unrecognized attempt blocked from CHAP1:OK

раньше было просто "CHAP1:OK" а теперь постоянно еще и это..