Netgear alerts - is this something to be concerned about

[#1]

I have the following Email notifications set for my NetGear DG834G:
If a DoS attack is detected.
If a Port Scan is detected.
If someone attempts to access a blocked site. (Don't have any blocked sites BTW)
Usually I get one or two alerts a day (with just one or two lines) which I ignored as they didn't seem significant.
Over the last couple of days the've been getting more frequeent with the followng being received a few minutes ago (I've blocked out my full IP address):
[quote=NETGEAR security Log]Sun, 2002-09-08 13:00:20 - LCP is allowed to come up.
Sun, 2002-09-08 13:00:24 - CHAP authentication success Sun, 2002-09-08 13:00:35 - Send out NTP request to time-g.netgear.com Fri, 2011-08
-12 12:11:26 - Receive NTP Reply from time-g.netgear.com Fri, 2011-08-12 12:11:45 - Administrator login successful - IP:192.168.0.2 Fri,
2011-08-12 12:10:50 - Router start up Fri, 2011-08-12 14:07:32 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73 -
[DOS] Fri, 2011-08-12 14:07:34 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,6588 - [DOS] Fri, 2011-08-12 14:07:34
- Send E-mail Success!
Fri, 2011-08-12 16:21:47 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,9090 - [DOS] Fri, 2011-08-12 16:21:49 - TCP
Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8008 - [DOS] Fri, 2011-08-12 16:21:49 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73 - [DOS] Fri, 2011-08-12 16:21:49 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,3246 - [DOS] Fri, 2011-08-12 16:21:49 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8123 - [DOS] Fri, 2011-08-12 16:21:49 - Send E-mail Success!
Fri, 2011-08-12 17:46:07 - TCP Packet - Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,3128 - [DOS] Fri, 2011-08-12 17:46:09 - TCP
Packet - Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,2301 - [DOS] Fri, 2011-08-12 17:46:09 - TCP Packet -
Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,8118 - [DOS] Fri, 2011-08-12 17:46:09 - Send E-mail Success!
Fri, 2011-08-12 19:23:45 - Administrator login successful - IP:192.168.0.2 Fri, 2011-08-12 19:34:53 - TCP Packet -
Source:58.218.199.227,12200 Destination:80.229.xxx.xxx,8008 - [DOS] Fri, 2011-08-12 19:34:55 - TCP Packet - Source:58.218.199.227,12200
Destination:80.229.xxx.xxx,73 - [DOS] Fri, 2011-08-12 19:34:55 - TCP Packet - Source:58.218.199.227,12200 Destination:80.229.xxx.xxx,8123
- [DOS] Fri, 2011-08-12 19:34:55 - Send E-mail Success!
Fri, 2011-08-12 22:40:30 - TCP Packet - Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,80 - [DOS] Fri, 2011-08-12 22:40:32 - Send
E-mail Success!
Fri, 2011-08-12 22:55:34 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,6588 - [DOS] Fri, 2011-08-12 22:55:35 - TCP
Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,7212 - [DOS] Fri, 2011-08-12 22:55:35 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,5390 - [DOS] Fri, 2011-08-12 22:55:35 - Send E-mail Success!
Sat, 2011-08-13 03:41:15 - TCP Packet - Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,73 - [DOS] Sat, 2011-08-13 03:41:17 - TCP
Packet - Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,7212 - [DOS] Sat, 2011-08-13 03:41:17 - TCP Packet -
Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,6588 - [DOS] Sat, 2011-08-13 03:41:17 - Send E-mail Success!
Sat, 2011-08-13 04:59:05 - Administrator login successful - IP:192.168.0.2 Sat, 2011-08-13 09:53:23 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,6588 - [DOS] Sat, 2011-08-13 09:53:24 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,7212 - [DOS] Sat, 2011-08-13 09:53:24 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,5390 - [DOS] Sat, 2011-08-13 09:53:24 - Send E-mail Success!
Sat, 2011-08-13 10:15:34 - TCP Packet - Source:58.218.199.227,12200 Destination:80.229.xxx.xxx,9090 - [DOS] Sat, 2011-08-13 10:15:36 -
Send E-mail Success!
Sat, 2011-08-13 11:28:41 - TCP Packet - Source:58.218.199.227,12200 Destination:80.229.xxx.xxx,9090 - [DOS] Sat, 2011-08-13 11:28:43 - TCP
Packet - Source:58.218.199.227,12200 Destination:80.229.xxx.xxx,8008 - [DOS] Sat, 2011-08-13 11:28:43 - TCP Packet -
Source:58.218.199.227,12200 Destination:80.229.xxx.xxx,3246 - [DOS] Sat, 2011-08-13 11:28:43 - TCP Packet - Source:58.218.199.227,12200
Destination:80.229.xxx.xxx,8123 - [DOS] Sat, 2011-08-13 11:28:43 - TCP Packet - Source:58.218.199.227,12200
Destination:80.229.xxx.xxx,6588 - [DOS] Sat, 2011-08-13 11:28:43 - Send E-mail Success!
Sat, 2011-08-13 14:15:28 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,6588 - [DOS] Sat, 2011-08-13 14:15:30 -
Send E-mail Success!
Sat, 2011-08-13 16:16:47 - Administrator login successful - IP:192.168.0.2 Sat, 2011-08-13 16:21:52 - TCP Packet -
Source:58.218.199.227,12200 Destination:80.229.xxx.xxx,8123 - [DOS] Sat, 2011-08-13 16:21:54 - TCP Packet - Source:58.218.199.227,12200
Destination:80.229.xxx.xxx,6588 - [DOS] Sat, 2011-08-13 16:21:54 - TCP Packet - Source:58.218.199.227,12200
Destination:80.229.xxx.xxx,7212 - [DOS] Sat, 2011-08-13 16:21:54 - TCP Packet - Source:58.218.199.227,12200
Destination:80.229.xxx.xxx,5390 - [DOS] Sat, 2011-08-13 16:21:54 - TCP Packet - Source:58.218.199.227,12200
Destination:80.229.xxx.xxx,8080 - [DOS] Sat, 2011-08-13 16:21:54 - Send E-mail Success!
Sat, 2011-08-13 17:44:16 - TCP Packet - Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,5390 - [DOS] Sat, 2011-08-13 17:44:18 - TCP
Packet - Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,8080 - [DOS] Sat, 2011-08-13 17:44:18 - TCP Packet -
Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,80 - [DOS] Sat, 2011-08-13 17:44:18 - Send E-mail Success!
Sat, 2011-08-13 19:34:54 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8008 - [DOS] Sat, 2011-08-13 19:34:55 - TCP
Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73 - [DOS] Sat, 2011-08-13 19:34:55 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,3246 - [DOS] Sat, 2011-08-13 19:34:55 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8123 - [DOS] Sat, 2011-08-13 19:34:55 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,6588 - [DOS] Sat, 2011-08-13 19:34:55 - Send E-mail Success!
Sun, 2011-08-14 01:02:52 - Administrator login successful - IP:192.168.0.2 Sun, 2011-08-14 02:32:05 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,3246 - [DOS] Sun, 2011-08-14 02:32:06 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,6588 - [DOS] Sun, 2011-08-14 02:32:06 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,7212 - [DOS] Sun, 2011-08-14 02:32:06 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,5390 - [DOS] Sun, 2011-08-14 02:32:06 - Send E-mail Success!
Sun, 2011-08-14 02:51:12 - TCP Packet - Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,2301 - [DOS] Sun, 2011-08-14 02:51:13 - TCP
Packet - Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,8118 - [DOS] Sun, 2011-08-14 02:51:13 - TCP Packet -
Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,7212 - [DOS] Sun, 2011-08-14 02:51:13 - Send E-mail Success!
Sun, 2011-08-14 02:53:49 - Administrator login successful - IP:192.168.0.2 Sun, 2011-08-14 04:07:13 - TCP Packet -
Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,2479 - [DOS] Sun, 2011-08-14 04:07:15 - TCP Packet - Source:58.218.199.147,12200
Destination:80.229.xxx.xxx,9090 - [DOS] Sun, 2011-08-14 04:07:15 - TCP Packet - Source:58.218.199.147,12200
Destination:80.229.xxx.xxx,8008 - [DOS] Sun, 2011-08-14 04:07:15 - TCP Packet - Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,73
- [DOS] Sun, 2011-08-14 04:07:15 - TCP Packet - Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,3246 - [DOS] Sun, 2011-08-14
04:07:15 - TCP Packet - Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,7212 - [DOS] Sun, 2011-08-14 04:07:15 - TCP Packet -
Source:58.218.199.147 Destination:80.229.xxx.xxx - [PORT SCAN] Sun, 2011-08-14 04:07:15 - Send E-mail Success!
Sun, 2011-08-14 04:52:52 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73 - [DOS] Sun, 2011-08-14 04:52:54 - Send
E-mail Success!
Sun, 2011-08-14 05:21:43 - Administrator login successful - IP:192.168.0.2 Sun, 2011-08-14 07:12:23 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73 - [DOS] Sun, 2011-08-14 07:12:24 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,3246 - [DOS] Sun, 2011-08-14 07:12:24 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8123 - [DOS] Sun, 2011-08-14 07:12:24 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,7212 - [DOS] Sun, 2011-08-14 07:12:24 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,5390 - [DOS] Sun, 2011-08-14 07:12:24 - Send E-mail Success!
Sun, 2011-08-14 09:28:23 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,3246 - [DOS] Sun, 2011-08-14 09:28:24 - TCP
Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8123 - [DOS] Sun, 2011-08-14 09:28:24 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,6588 - [DOS] Sun, 2011-08-14 09:28:24 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,7212 - [DOS] Sun, 2011-08-14 09:28:24 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,5390 - [DOS] Sun, 2011-08-14 09:28:24 - Send E-mail Success!
Sun, 2011-08-14 11:07:05 - TCP Packet - Source:221.194.46.176,12200 Destination:80.229.xxx.xxx,8123 - [DOS] Sun, 2011-08-14 11:07:06 - TCP
Packet - Source:221.194.46.176,12200 Destination:80.229.xxx.xxx,6588 - [DOS] Sun, 2011-08-14 11:07:06 - Send E-mail Success!
Sun, 2011-08-14 11:08:14 - TCP Packet - Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,8008 - [DOS] Sun, 2011-08-14 11:08:14 - TCP
Packet - Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,7212 - [DOS] Sun, 2011-08-14 11:08:14 - TCP Packet -
Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,6588 - [DOS] Sun, 2011-08-14 11:36:33 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8123 - [DOS] Sun, 2011-08-14 11:36:34 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,6588 - [DOS] Sun, 2011-08-14 11:36:34 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,7212 - [DOS] Sun, 2011-08-14 11:36:34 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,5390 - [DOS] Sun, 2011-08-14 11:36:34 - Send E-mail Success!
Sun, 2011-08-14 14:27:49 - TCP Packet - Source:221.192.199.49,12200 Destination:80.229.xxx.xxx,8088 - [DOS] Sun, 2011-08-14 14:27:50 -
Send E-mail Success!
Sun, 2011-08-14 15:00:46 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,2301 - [DOS] Sun, 2011-08-14 15:00:47 - TCP
Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8118 - [DOS] Sun, 2011-08-14 15:00:47 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8008 - [DOS] Sun, 2011-08-14 15:00:47 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8088 - [DOS] Sun, 2011-08-14 15:00:47 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,7212 - [DOS] Sun, 2011-08-14 15:00:47 - Send E-mail Success!
Sun, 2011-08-14 15:39:55 - Administrator login successful - IP:192.168.0.2 Sun, 2011-08-14 16:40:59 - Administrator login successful -
IP:192.168.0.2 Sun, 2011-08-14 17:06:23 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8090 - [DOS] Sun, 2011-08-14
17:06:25 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,1080 - [DOS] Sun, 2011-08-14 17:06:25 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8118 - [DOS] Sun, 2011-08-14 17:06:25 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8008 - [DOS] Sun, 2011-08-14 17:06:25 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8088 - [DOS] Sun, 2011-08-14 17:06:25 - Send E-mail Success!
Sun, 2011-08-14 19:04:22 - Administrator login successful - IP:192.168.0.2 Mon, 2011-08-15 01:08:53 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,3128 - [DOS] Mon, 2011-08-15 01:08:55 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,2301 - [DOS] Mon, 2011-08-15 01:08:55 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8118 - [DOS] Mon, 2011-08-15 01:08:55 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8008 - [DOS] Mon, 2011-08-15 01:08:55 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8088 - [DOS] Mon, 2011-08-15 01:08:55 - Send E-mail Success!
Mon, 2011-08-15 02:20:04 - Administrator login successful - IP:192.168.0.2 Mon, 2011-08-15 07:14:58 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,2301 - [DOS] Mon, 2011-08-15 07:14:59 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8088 - [DOS] Mon, 2011-08-15 07:14:59 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73
- [DOS] Mon, 2011-08-15 07:14:59 - Send E-mail Success!
Mon, 2011-08-15 08:40:32 - TCP Packet - Source:58.218.199.227,12200 Destination:80.229.xxx.xxx,6588 - [DOS] Mon, 2011-08-15 08:40:34 -
Send E-mail Success!
Mon, 2011-08-15 09:17:11 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,3128 - [DOS] Mon, 2011-08-15 09:17:12 - TCP
Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8118 - [DOS] Mon, 2011-08-15 09:17:12 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,2301 - [DOS] Mon, 2011-08-15 09:17:12 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8008 - [DOS] Mon, 2011-08-15 09:17:12 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8088 - [DOS] Mon, 2011-08-15 09:17:12 - Send E-mail Success!
Mon, 2011-08-15 10:11:26 - Send out NTP request to time-g.netgear.com Mon, 2011-08-15 10:11:27 - Receive NTP Reply from time-g.netgear.com
Mon, 2011-08-15 11:21:18 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73 - [DOS] Mon, 2011-08-15 11:21:20 - TCP
Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,7212 - [DOS] Mon, 2011-08-15 11:21:20 - Send E-mail Success!
Mon, 2011-08-15 13:25:01 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,7212 - [DOS] Mon, 2011-08-15 13:25:04 - TCP
Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73 - [DOS] Mon, 2011-08-15 13:25:04 - Send E-mail Success!
Mon, 2011-08-15 14:03:35 - Administrator login successful - IP:192.168.0.2 Mon, 2011-08-15 19:34:59 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8008 - [DOS] Mon, 2011-08-15 19:35:01 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,8088 - [DOS] Mon, 2011-08-15 19:35:01 - TCP Packet - Source:58.218.199.250,12200
Destination:80.229.xxx.xxx,7212 - [DOS] Mon, 2011-08-15 19:35:01 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73
- [DOS] Mon, 2011-08-15 19:35:01 - Send E-mail Success!
Mon, 2011-08-15 19:57:01 - TCP Packet - Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,3246 - [DOS] Mon, 2011-08-15 19:57:03 - TCP
Packet - Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,8123 - [DOS] Mon, 2011-08-15 19:57:03 - TCP Packet -
Source:58.218.199.147,12200 Destination:80.229.xxx.xxx,80 - [DOS] Mon, 2011-08-15 19:57:03 - Send E-mail Success!
Mon, 2011-08-15 21:37:38 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,2301 - [DOS] Mon, 2011-08-15 21:37:39 - TCP
Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8118 - [DOS] Mon, 2011-08-15 21:37:39 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,8008 - [DOS] Mon, 2011-08-15 21:37:39 - Send E-mail Success!
Tue, 2011-08-16 00:37:23 - Administrator login successful - IP:192.168.0.2 Tue, 2011-08-16 04:00:11 - Administrator login successful -
IP:192.168.0.2 Tue, 2011-08-16 08:55:59 - TCP Packet - Source:58.218.199.227,12200 Destination:80.229.xxx.xxx,3246 - [DOS] Tue, 2011-08-16
08:56:04 - Send E-mail Success!
Tue, 2011-08-16 11:22:17 - TCP Packet - Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,73 - [DOS] Tue, 2011-08-16 11:22:19 - Send
E-mail Success!
Tue, 2011-08-16 14:25:26 - Administrator login successful - IP:192.168.0.2 Tue, 2011-08-16 15:20:20 - TCP Packet -
Source:58.218.199.250,12200 Destination:80.229.xxx.xxx,7212 - [DOS]

I've tried two different Reverse DNS lookups and they both tell me the IP starting 58 is from China.
Should I be concerned or is the router's firewall doing it's job?
Cheers.
Edit: I have AVG, SpyBot, Adaware, Malwarebytes, CCleaner which are run frequently including two days ago and not issues reported.

[#2]

If this just stays as a couple of isolated incidents I wouldn't let it be a concern. After all if you are getting these e-mails it means that your router is doing its job correctly and the firewall should be blocking any such attempts.

[#3]

Thanks. I'll keep on eye on things.