topic Re: Odd behavior using pppoe on Fibre in Spark Firewall (SMB)

Odd behavior using pppoe on Fibre

MrDazana — Sat, 04 Feb 2023 17:30:23 GMT

I own 2 checkpoints and both are doing this. (1530/1570)

Running R81.10 (996000575) on both

While using the PPPoE for WAN, Some sites are not coming up and some applications are timing out when trying to connect. This is not happening if I switch WAN to DHCP and use the ISP modem as a router. Can't see anything in the logs

I tried setting the MTU to 1492. Done a factory reset on both devices, factory reset on the ISP modem. If I use the built in PPPoE windows adapter from a laptop, I do not have this issue so everything is pointing to the check point firewall.

Thoughts ?

Re: Odd behavior using pppoe on Fibre

Chris_Atkinson — Sat, 04 Feb 2023 18:31:48 GMT

Potentially you will need to enable MSS clamping per sk121114.

Re: Odd behavior using pppoe on Fibre

MrDazana — Sat, 04 Feb 2023 19:35:11 GMT

Do you have a direct link to that? can't find anything using the search box above.

thanks

Re: Odd behavior using pppoe on Fibre

PhoneBoy — Sat, 04 Feb 2023 20:08:02 GMT

https://support.checkpoint.com/results/sk/sk121114

Re: Odd behavior using pppoe on Fibre

Chris_Atkinson — Sat, 04 Feb 2023 21:09:43 GMT

Note: The search box above is limited to the community and not the knowledge base / support center.

Re: Odd behavior using pppoe on Fibre

MrDazana — Sat, 04 Feb 2023 21:19:10 GMT

I did select the knowledge base and came back with 0 results. searched for sk121114

Re: Odd behavior using pppoe on Fibre

Chris_Atkinson — Sat, 04 Feb 2023 21:24:01 GMT

Strange it's searchable for me both via Google & supportcenter using that reference.

Re: Odd behavior using pppoe on Fibre

MrDazana — Sat, 04 Feb 2023 21:30:35 GMT

This totally fixed it it ! thanks

Re: Odd behavior using pppoe on Fibre

MrDazana — Fri, 10 Feb 2023 12:57:07 GMT

Adding an update to this issue. I reverted back to factory firmware and setting which is R80.20.15 (992001653) on both my 1530 and 1570. I did not have to enable MSS clamping but I did have to set the MTU to 1492 on the WAN, VLANs & LAN side.

Re: Odd behavior using pppoe on Fibre

MrDazanaCom — Tue, 14 Feb 2023 00:57:42 GMT

Update 2. My ISP did a firmware update to the modem after chatting about my issue to tech who works there. After the update , I didn't have to use the solution above on both SMB firmware but I did have to set the MTU on the PPPoE and LAN network.

Now back on R81.10 Hope this helps others with simular issue