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user_4ff3c3
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3 Messages

Saturday, January 28th, 2023 9:34 PM

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Intermittent network drop - firewall logs

My network intermittently drops. If I continually ping the router (Arris TG4482A), the pings time out whenever this occurs.

Every single time I have this issue I see the following entries in the router firewall logs:

FW.IPv6 FORWARD drop , 77 Attempts, 2023/1/28 16:23:37 Firewall Blocked
FW.IPv6 INPUT drop , 6227 Attempts, 2023/1/28 16:23:37 Firewall Blocked
FW.LAN2SELF DROP , 64 Attempts, 2023/1/28 15:29:42 Firewall Blocked

The equipment has worked just fine for years and I have only recently started having this issue. I see several other forum posts about this, any idea whats going on?

Question

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Updated 

2 years ago

563

3

user_4ff3c3

Visitor

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3 Messages

2 years ago

Is someone probing my IP? If so how could I get another public IP?

Would it help to buy my own router thats more resilient to attacks? I'm willing to spend a few hundred bucks on this if I have to.

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user_4ff3c3

Visitor

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3 Messages

2 years ago

So I found this:

https://arris.secure.force.com/consumers/articles/General_FAQs/SVG2482AC-Cable-Signal-Levels/?l=en_US&fs=RelatedArticle

What is the 5th channel bonding value that looks a bit odd to me...

Upstream
Channel Bonding Value
Index
1
2
3
4
5
Lock Status
Locked
Locked
Locked
Locked
Locked
Frequency
29200000
35600000
16400000
22800000
39900000-84275000
Symbol Rate
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
5120 KSym/sec
0 KSym/sec
Power Level
48.020599
49.020599
46.770599
47.520599
60.682629
Modulation
64QAM
64QAM
64QAM
64QAM
OFDMA
Channel Type
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_ATDMA
US_TYPE_OFDMA

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CCGina

Official Employee

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800 Messages

HI @user_4ff3c3, sorry to hear about the recent issue with the drops in connection! 

 

Has anything changed in the home setup since this began? Our residential IPs are sticky, so they can change but don't very often; you can do a release and renewal of the IP to see if that does the trick, but it's not a guarantee. And if your firewall is blocking those attempts, it's doing its job, so that's good! You can certainly use a separate router if you need or want to too! The XB7 is a gateway, so it's a modem and router in one device.

I no longer work for Comcast.

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2 years ago

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EG

Expert

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110.3K Messages

2 years ago

@user_4ff3c3 @XfinityGina  

FWIW. If one is behind a combo gateway device or a stand-alone router, performing an IP release / renew operation will only serve to release / renew the LAN / private IP address that is assigned to the network client / device by the router's internal DHCP server, not the WAN / public IP address that is assigned to the connection by the Comcast DHCP server.

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