Network shield prevents access to router web setup - Avast 1474

[Broken Hope]

Since upgrading to Windows 8 and the latest version of Avast I have to disable the Network shield otherwise my routers web setup page is extremely slow to load, or elements are missing, same thing happens when connecting to my cable modems web setup, both issues are fixed If I disable the Network shield.

I thought you guys spent extra time on the Network Shield to make it Windows 8 compatible?

[lash78]

Same issue here. Build 1473 is very buggy. It causes network issues and bsods. I swithced back to 1466 and the problem is gone.

[Broken Hope]

This is still occurring as of the latest build, still no post from anyone on the dev/support team either.

[lukor]

Same issue here. Build 1473 is very buggy. It causes network issues and bsods. I swithced back to 1466 and the problem is gone.

Hi lash, what brand and model of the router do you have troubles with?


The same question goes to Broken Hope as well. Thanks guys.

[lukor]

Guys, are we talking about Avast7 Free, or Internet Security (with Firewall) ? Thanks.

[Broken Hope]

Guys, are we talking about Avast7 Free, or Internet Security (with Firewall) ? Thanks.

It's Avast 7 Pro, doesn't appear to matter then brand of router since I have the same issue with my cable modem too, with Network Shield enabled accessing the web setup on either device is very slow, with Network Shield disabled it functions properly.

[lukor]

We have seen these problems in the past with WebShield. HW appliances such as routers sometimes have rather limited Web Servers and/or send the data is some specific somewhat non-standard way and this might confuse the HTTP parser (inside WebShield or Netshield). Would you be able to create a packet dump from the communication (e.g. in Wireshark) ?


Thanks. L.

[Broken Hope]

We have seen these problems in the past with WebShield. HW appliances such as routers sometimes have rather limited Web Servers and/or send the data is some specific somewhat non-standard way and this might confuse the HTTP parser (inside WebShield or Netshield). Would you be able to create a packet dump from the communication (e.g. in Wireshark) ?


Thanks. L.

Not even sure how to do that, The problem didn't occur in Windows 7, only in Windows 8 with Network Shield enabled.

[lukor]

No problems here accessing my DLINK router or Motorola Cable Modem.

[Broken Hope]

No problems here accessing my DLINK router or Motorola Cable Modem.

Have you tried clicking around and accessing the various options? The first screen shows fine, but trying to access the various options takes a long time, the status bar of my browser gets stuck at transferring from 192.x.x.x

[Biigow]

I'm having trouble accessing the page of my router, already switched to the Dlink but still not able to get it in the settings page, the page loads endlessly, and sometimes occurs BSOD ... = /

[lash78]

Same issue here, and now the network shield is blocking lot of sites. nshield.log is full of failures:

Here is a portion of the log:  http://pastebin.com/9NwKQTra
(windows 8 x64)

[Broken Hope]

My nshield.log file is full of entries also.

I just did a test, I enabled the Network Shield then attempted to access my cable modem, then I stopped the shield and here's the entries between starting and stopping the shield.

Code: [Select]

INFO: Call Start method to the DLL
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25434 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25439 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25439 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25443 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25443 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x2544c IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x2544c IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25456 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25456 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::InjectGracefulClose: For stream SEND_PUSH: Id: 0x2543b (Cn:0x0) [0x0B3C8DD8] sz: 0, f:3 failed, code 0x80070057
AswNsfCompletionPort::InjectGracefulClose: For stream SEND_PUSH: Id: 0x25458 (Cn:0x0) [0x12225008] sz: 0, f:3 failed, code 0x80070490
AswNsfCompletionPort::InjectGracefulClose: For stream SEND_PUSH: Id: 0x2545a (Cn:0x0) [0x0B3C8DD8] sz: 0, f:3 failed, code 0x80070490
AswNsfCompletionPort::GetConnectionInfo: for id: 0x2546a IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x2546a IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25474 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25474 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25479 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25482 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25486 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25482 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::GetConnectionInfo: for id: 0x25486 IOCTL failed with code (Win: 0x5 HR: 0x80070005!
AswNsfCompletionPort::InjectGracefulClose: For stream SEND_PUSH: Id: 0x2548a (Cn:0x0) [0x0E041008] sz: 0, f:3 failed, code 0x80070490
AswNsfCompletionPort::InjectGracefulClose: For stream SEND_PUSH: Id: 0x2548b (Cn:0x0) [0x0EB80B98] sz: 0, f:3 failed, code 0x80070057
AswNsfCompletionPort::InjectGracefulClose: For stream SEND_PUSH: Id: 0x25490 (Cn:0x0) [0x0E041008] sz: 0, f:3 failed, code 0x80070490
AswNsfCompletionPort::InjectGracefulClose: For stream SEND_PUSH: Id: 0x2548c (Cn:0x0) [0x0B2E8EF8] sz: 0, f:3 failed, code 0x80070490
INFO: Call Stop method to the DLL

[Zdenek]

Hallo..

I'm not able to reproduce the bug here in Avast!, then I can ask you if you can specify the router/modem types where the problem occurs and firmware versions (for example if you are using openwrt etc..)

The slow-down problem occurs only with router pages (all or any specific pages), or on classic web pages too?

Does help if you restart the Avast Service by Service Manager?

Additionally, do you use another third party security software for traffic inspection? Firewall, parental control, etc?

!!! PLEASE, TRY TO REPLY ALL QUESTRIONS !!!

Thank you.

[Aco]

No problems here accessing my DLINK router or Motorola Cable Modem.

Well I have ADSL router D-Link DSL-2641B and I do have those issues. Windows 8 Pro x64 and Avast Free.