Re: SFTP using expect. -- MIDRANGE-L

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The modern firewalls often do packet inspection, that’s why many times the IBM i groups won’t download, the firewall thinks it sees a program(likely true) and boom.

Jim Oberholtzer
Agile Technology Architects

On Feb 15, 2023, at 12:02 PM, Patrik Schindler <poc@xxxxxxxxxx> wrote:

Hello Jim,

Am 15.02.2023 um 17:07 schrieb Jim Oberholtzer <midrangel@xxxxxxxxxxxxxxxxx>:

Consider also checking your firewall settings. Many firewalls will suspect nefarious transfers when many small files or one very large one goes across. It happens so often with the newer firewalls it's getting to be a knee jerk reaction.

I highly doubt that. The connection is encrypted and I'm not aware of firewalls being aware of MITM cracking an ssh connection. Ssh is not the same as ssl.

They *could* use heuristics to guess about the type of traffic when watching packet rates and sizes, though.

:wq! PoC

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