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Re: FVS336G v2 Locks up with printed report
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FVS336G v2 Locks up with printed report
This one has me cpmpletely baffled. I have a FVS336G v2 - latest firmware 3.0.7-24 and it is a pretty simple setup. One VPN tunnel to our corporate office, a dozen or so users.
When we print a report, just a common, ordinary sales report, the router locks up. No VPN access, no internet access. Must reboot the router and it works again - until we print the report. Other reports work just fine. This one is only about 7 pages.
This router will run fine for days until this report is printed.
I changed out the router with a second one, same results.
There seems to be some control code in this printed report job that is locking up the router. I can recreate this at will.
Tried a brand new printer, different IP address and cable. Same lockup. The print job runs through the VPN. I unchecked everything except ping under Attack Checks.
Could it be something with the encryption? Has anyone seen this before?
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Re: FVS336G v2 Locks up with printed report
How big is the report, is it a specific format type? Does it have large graphics?
does the firewall simply stop responding and you have to power off/on or can you restart from the UI?
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Re: FVS336G v2 Locks up with printed report
Usually large file transfer or even spool size large will cause bu he MTU values and lock up the tunnel
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Re: FVS336G v2 Locks up with printed report
Just changed it. Will see what happens tomorrow!
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Re: FVS336G v2 Locks up with printed report
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Re: FVS336G v2 Locks up with printed report
I changed it from the default (MD5???) to AES-128.
usually MD5 or SHA-1
and
usually AES-128 or DES, 3DES, AES-256
🙂
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Re: FVS336G v2 Locks up with printed report
I am not sure which resolved the problem, but have a couple of routers (various Netgears) that absolutely will not VPN with 3DES. AES-128 is fine.
The VPN Wizard uses 3DES as the default.
I had a similar unexplained lockup occurring with the 336 at a remote office in Chesapeake, VA - about 100 miles away. It worked fine for several days at a time, then locked up. At the time, I had a FVS-338 as a spare and when I replaced the 336 with the 338, the problem went away.
A storm took out the 338 I had at the location in Richmond, VA - where I am located, and I ordered a couple more, but could only get the 336's. When I replaced the dead 338 with the 336, I had the same lockup problem, but this was the unit I pulled out of Chesapeake and was the only "working" box I had until my order arrived. When I replaced the "bad" 336 with a new one, I still had the lockup problem. As this site is local, I spent a lot of time at this site and found out that every time a certain report was printed, the 336 locked up requiring a power off reset.
I imagine a similar situation was happening in Chesapeake, but I had not connected the print job to the outage.
I also have a 336 installed in Yorktown and Williamsburg, but the reports are all most likely done by the Chesapeake office. I am going to make the MTU and AES-128 change to those as well.
Odd that 3DES and default MTU size work on the FVS-338 but not on the 336. All of them have the latest available software load.
I was beginning to think the 336's were all buggy. I have been using Netgear VPN's for nearly 9 years and have been through some really cranky and buggy software. Especially the earlier releases for the FVS-538, which is doing OK now with 3.0.6-29. I think I will leave the FVX alone.
Thanks for the help on this. I will make the AES-128 and MTU 1430 the default from now on.
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Re: FVS336G v2 Locks up with printed report
I am not sure which resolved the problem, but have a couple of routers (various Netgears) that absolutely will not VPN with 3DES. AES-128 is fine.
I use AES-256 over 3des. AES is faster over 3DES.:)
post back if you have more issues
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Re: FVS336G v2 Locks up with printed report
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Re: FVS336G v2 Locks up with printed report
Thank you for the response. I changed a couple of things and it has been working for about a week.
Until today.
I just got a call and found out they were printing the same report that has been killing it all along. I thought it was resolved, but I guess not.
I will contact support and see if there is any update for the 336G I can get my hands on. This sounds like the same problem and I really appreciate your taking the time to respond.