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Netgear Router - DOS Attacks on Log

Crabman
Crabman Posts: 9,939 Forumite
Part of the Furniture 1,000 Posts Photogenic Combo Breaker
in Techie Stuff
I have a Netgear DG834G v3 router but recently noticed a load of DOS entries on the log. I have a dynamic I.P. which changes each time I reboot the router - however DOS entries are still coming through thick and fast.

No idea what's causing this as this hasn't happened for the last 18 months or so I've had AOL Broadband. Seems to have started since we had a fault on our broadband (constant dropouts) which BT tried to sort by fitting a new master socket.

The router has its firewall enabled & there are no firewall rules. I don't use P2P and the option to respond to ping is disabled in the router config screen (WAN Setup).

On a separate note my PC almost crashed earlier and wouldn't access the internet, messenger, or the router config screen - whilst shutting down it flashed up a blue screen error saying "BAD_POOL_CALLER" - as it's a one-off I'm not worried, unless anyone thinks it could be related to the DOS entries... :o

Grateful for any info on what's happening etc. and whether it needs any action :)
Sun, 2002-09-08 12:00:35 - Initialize LCP.
Sun, 2002-09-08 12:00:35 - LCP is allowed to come up.
Sun, 2002-09-08 12:00:39 - CHAP authentication success
Sun, 2002-09-08 12:00:45 - Send out NTP request to time-g.netgear.com
Tue, 2008-01-01 13:50:30 - Receive NTP Reply from time-g.netgear.com
Tue, 2008-01-01 13:49:45 - Router start up
Tue, 2008-01-01 14:33:19 - UDP Packet - Source:87.248.104.123,3478 Destination:172.188.231.163,49222 - [DOS]
Tue, 2008-01-01 14:33:19 - UDP Packet - Source:87.248.104.124,3479 Destination:172.188.231.163,49222 - [DOS]
Tue, 2008-01-01 14:33:19 - UDP Packet - Source:87.248.104.123,3478 Destination:172.188.231.163,49222 - [DOS]
Tue, 2008-01-01 14:33:19 - UDP Packet - Source:87.248.104.124,3479 Destination:172.188.231.163,49222 - [DOS]
Tue, 2008-01-01 14:33:19 - UDP Packet - Source:87.248.104.123,3478 Destination:172.188.231.163,49222 - [DOS]
Tue, 2008-01-01 16:04:01 - Administrator login successful - IP:192.168.0.2
Tue, 2008-01-01 17:40:57 - Loss of synchronization :1
Tue, 2008-01-01 17:41:25 - Administrator login successful - IP:192.168.0.2
Tue, 2008-01-01 21:48:54 - Administrator login successful - IP:192.168.0.2
Tue, 2008-01-01 21:49:15 - LCP down.
Tue, 2008-01-01 21:49:19 - Initialize LCP.
Tue, 2008-01-01 21:49:19 - LCP is allowed to come up.
Tue, 2008-01-01 21:49:26 - CHAP authentication success
Tue, 2008-01-01 21:50:51 - UDP Packet - Source:87.248.104.123,3478 Destination:172.200.137.231,50501 - [DOS]
Tue, 2008-01-01 21:50:51 - UDP Packet - Source:87.248.104.124,3479 Destination:172.200.137.231,50501 - [DOS]
Tue, 2008-01-01 21:50:51 - UDP Packet - Source:87.248.104.123,3478 Destination:172.200.137.231,50501 - [DOS]
Tue, 2008-01-01 21:50:51 - UDP Packet - Source:87.248.104.124,3479 Destination:172.200.137.231,50501 - [DOS]
Tue, 2008-01-01 21:50:51 - UDP Packet - Source:87.248.104.123,3478 Destination:172.200.137.231,50501 - [DOS]
Wed, 2008-01-02 09:50:46 - Loss of synchronization :2
Wed, 2008-01-02 09:50:56 - LCP down.
Wed, 2008-01-02 09:50:57 - Initialize LCP.
Wed, 2008-01-02 09:50:57 - LCP is allowed to come up.
Wed, 2008-01-02 09:51:04 - CHAP authentication success
Wed, 2008-01-02 12:23:37 - UDP Packet - Source:87.248.104.123,3478 Destination:172.142.13.140,49215 - [DOS]
Wed, 2008-01-02 12:23:37 - UDP Packet - Source:87.248.104.124,3479 Destination:172.142.13.140,49215 - [DOS]
Wed, 2008-01-02 12:23:37 - UDP Packet - Source:87.248.104.123,3478 Destination:172.142.13.140,49215 - [DOS]
Wed, 2008-01-02 12:23:37 - UDP Packet - Source:87.248.104.124,3479 Destination:172.142.13.140,49215 - [DOS]
Wed, 2008-01-02 12:23:37 - UDP Packet - Source:87.248.104.123,3478 Destination:172.142.13.140,49215 - [DOS]
Wed, 2008-01-02 17:21:40 - UDP Packet - Source:87.248.98.14,3478 Destination:172.142.13.140,49227 - [DOS]
Wed, 2008-01-02 17:21:40 - UDP Packet - Source:87.248.98.13,3479 Destination:172.142.13.140,49227 - [DOS]
Wed, 2008-01-02 17:21:40 - UDP Packet - Source:87.248.98.14,3478 Destination:172.142.13.140,49227 - [DOS]
Wed, 2008-01-02 17:21:40 - UDP Packet - Source:87.248.98.13,3479 Destination:172.142.13.140,49227 - [DOS]
Wed, 2008-01-02 17:21:40 - UDP Packet - Source:87.248.98.14,3478 Destination:172.142.13.140,49227 - [DOS]
Wed, 2008-01-02 17:52:26 - Loss of synchronization :3
Wed, 2008-01-02 19:21:50 - UDP Packet - Source:87.248.104.123,3478 Destination:172.142.13.140,49616 - [DOS]
Wed, 2008-01-02 19:21:50 - UDP Packet - Source:87.248.104.124,3479 Destination:172.142.13.140,49616 - [DOS]
Wed, 2008-01-02 19:21:50 - UDP Packet - Source:87.248.104.123,3478 Destination:172.142.13.140,49616 - [DOS]
Wed, 2008-01-02 19:21:50 - UDP Packet - Source:87.248.104.124,3479 Destination:172.142.13.140,49616 - [DOS]
Wed, 2008-01-02 19:21:50 - UDP Packet - Source:87.248.104.123,3478 Destination:172.142.13.140,49616 - [DOS]
Wed, 2008-01-02 19:51:33 - Administrator login successful - IP:192.168.0.2
Wed, 2008-01-02 20:20:54 - LCP down.
Wed, 2008-01-02 20:20:55 - Initialize LCP.
Wed, 2008-01-02 20:20:55 - LCP is allowed to come up.
Wed, 2008-01-02 20:20:59 - Loss of synchronization :4
Wed, 2008-01-02 20:21:02 - CHAP authentication success
Wed, 2008-01-02 20:22:40 - UDP Packet - Source:87.248.104.123,3478 Destination:172.188.42.206,49765 - [DOS]
Wed, 2008-01-02 20:22:40 - UDP Packet - Source:87.248.104.124,3479 Destination:172.188.42.206,49765 - [DOS]
Wed, 2008-01-02 20:22:40 - UDP Packet - Source:87.248.104.123,3478 Destination:172.188.42.206,49765 - [DOS]
Wed, 2008-01-02 20:22:40 - UDP Packet - Source:87.248.104.124,3479 Destination:172.188.42.206,49765 - [DOS]
Wed, 2008-01-02 20:22:40 - UDP Packet - Source:87.248.104.123,3478 Destination:172.188.42.206,49765 - [DOS]
Wed, 2008-01-02 20:49:36 - UDP Packet - Source:87.248.104.123,3478 Destination:172.188.42.206,49220 - [DOS]
Wed, 2008-01-02 20:49:36 - UDP Packet - Source:87.248.104.124,3479 Destination:172.188.42.206,49220 - [DOS]
Wed, 2008-01-02 20:49:36 - UDP Packet - Source:87.248.104.123,3478 Destination:172.188.42.206,49220 - [DOS]
Wed, 2008-01-02 20:49:36 - UDP Packet - Source:87.248.104.124,3479 Destination:172.188.42.206,49220 - [DOS]
Wed, 2008-01-02 20:51:42 - Administrator login successful - IP:192.168.0.2

Comments

  • albertross_2
    albertross_2 Posts: 8,932 Forumite
    I wouldn't worry about, packets are flying all over the place, and some are hitting your IP.

    bad pool caller is probably an unrelated driver issue
    Ever get the feeling you are wasting your time? :rolleyes:
  • ormus
    ormus Posts: 42,714 Forumite
    try switching the router off every so often. for a while.
    you should then get a new ip address from aol.
    it might help you.
    Get some gorm.
This discussion has been closed.
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