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maximum S2S Policies - Datasheet vs. Real-Life - what is it?

BWCBWC Cybersecurity Overlord ✭✭✭

Hi,

while planning some new deployments I was looking into the max number of Site-2-Site Tunnels the Gen7 can run and experienced a discrepancy between the values mentioned in the Datasheet vs. the numbers I can gather from a running appliance.

That is what I saw from the limited range of Appliances I have in the field right now.

Model   Firmware        Datasheet       Real
270     R5023           50              200
570     R5018           200             250
670     R5030           250             250

So what is to expect? Should I go with the Datasheet values or is the TZ 270 for example powerful enough for running 4 times the Datahsheet value?

--Michael@BWC

Category: Entry Level Firewalls
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Answers

  • TKWITSTKWITS Community Legend ✭✭✭✭✭

    Where are you getting your 'real' numbers from? Actual tunnels built, or what the GUI reports?

  • BWCBWC Cybersecurity Overlord ✭✭✭

    The values I mentioned labeled as "real" are from the Statistics Pop-Up on the VPN Policies page.

    Maybe it's similar glitch like the incorrect amount of DPI-SSL Connections in earlier firmware releases.

    But that's all speculation, I don't know why noone from SNWL chimes in.

    --Michael@BWC

  • NatNat Newbie

    Even in TSR, it still give similar value for MAX SA on TZ270. So maybe the backend design is 200 but for budget and model, they "officially" support 50. We all know, documentation is the weakness of SonicWALL.

  • BWCBWC Cybersecurity Overlord ✭✭✭

    @NAT sadly, you're right. It would be an easy thing to answer for SNWL, but the swarm isn't in the mood or just don't care.

    --Michael@BWC

  • BWCBWC Cybersecurity Overlord ✭✭✭

    I have to bring this up again, while checking the logs after updating to 7.0.1-5050 my TZ showed this message in the System Log:

    Event: Bad SA Count
    Message: VPN policy count received exceeds the limit; Min policies required: 250, MySonicWALL returned: 50
    

    This is a factory reset (empty) TZ 670 appliance, no VPNs defined so far. Does this mean it would be currently limited to 50 Policies, which is clearly a bug and should be addressed? VPN Statistics still show 250 Maximum Policies allowed. What is it then?

    Is there a way to figure out whats going on without creating tons of Policies?

    --Michael@BWC

  • TKWITSTKWITS Community Legend ✭✭✭✭✭

    Maybe it worth mentioning to @EnaBev

  • EnaEna Administrator

    Hello!

    Thanks for flagging this - I'll have someone from support take a look and get back to you.

    Let me know if you have any questions in the meantime.

    Ena Bevrnja

    SonicWall Community Manager

  • fmadiafmadia Moderator

    @BWC Apologies for the delay here. Regarding your initial question on the TZ270: this device supports a total of 50 Site to Site VPN Tunnels and 200 Phase 1 Security Associations.

    You can create up to 50 tunnels however each tunnel may contain multiple Security Associations depending on the amount of networks added to the VPN Tunnels.

    Regarding the second issue you have with the TZ670, I would recommend to reach out to our Technical Support (https://www.sonicwall.com/support/contact-support/) as that seems to be a backend mismatch.

  • BWCBWC Cybersecurity Overlord ✭✭✭

    @fmadia thanks for checking into this. But the information does not add up.

    For example, a customer has 20 Policies defined on a TZ 470 (7.0.1-5050), each Policy contains two local and one remote network, which result in 40 SAs. According to the Screenshot the Statistics implies that 20 out of 200 Policies are defined. According to the Datasheet the TZ has the ability of 150 S2S Tunnels and (or is it or?) 200 IPSec VPN Clients.

    It's either Policies or SAs, but it should be clearly communicated. This would mean in a worst-case scencario four VPN Policies with 5 local and 10 remote networks each could exhaust the capacity? This wasn't the case in Gen6 AFAIR, because this customer had a TZ 400 before and never hit 20 S2S Tunnel limit.

    For the sake of accuracy I highly recommend to show the real values, because the numbers mentioned in the Datasheet could be misleading.

    --MIchael@BWC

  • fmadiafmadia Moderator

    @BWC I agree with you that the Statistics shown there might be misleading and I believe the Support Team should investigate further on this too so I'd highly recommend you to reach out on the same.

    As for the limitation with the Security Associations, these can be easily avoided by using Tunnel Interface VPNs and using static routes - that will be a workaround to the Security Associations limitation.

  • BWCBWC Cybersecurity Overlord ✭✭✭

    @fmadia if we are talking SNWL-to-SNWL or any other remote side which support Tunnel Interfaces we're golden, but for the others we're stuck.

    I try to find the patience to handle this with support.

    --Michael@BWC

  • LarryLarry All-Knowing Sage ✭✭✭✭

    Michael @BWC - did you ever log this problem as a support case?

    I just rebooted my TZ270W to placate a CSR on another case and this was the first message in the new system log.

    VPN policy count received exceeds the limit; Min policies required: 200, MySonicWALL returned: 10

    So if there is an error, and SW support knows, at least I can hope for a fix in a future firmware update. Otherwise, I'll do the needful.

    Thanks!

    Larry

  • BWCBWC Cybersecurity Overlord ✭✭✭

    @Larry no I did not found the time for another time consuming rodeo. IMHO this should be answered by product management and not via a time consuming fishing expedition with probably senseless remote sessions, TSR requests etc.

    --Michael@BWC

  • LarryLarry All-Knowing Sage ✭✭✭✭

    Case 43920582 opened on March 22, 2022.

    Last update April 14, 2022:

    The issue is reported to backend team

    The engineering team are working on it

    Whatever...

  • LarryLarry All-Knowing Sage ✭✭✭✭

    On August 9, I updated my TZ270W to SonicOS 7.0.1-5080.

    The strange message is still the first one in the log:

    There's no status change to my open case...

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