What is the through put limit of ipsec / OpenSwan?

I am connecting to a Cisco ASA

I am using ipsec version:

Linux Openswan U2.6.37/K3.2.22-35.60.amzn1.x86_64 (netkey)

2 Answers 2


The IPsec throughput is dependent on the underlying hardware platform (specifically CPU cores). There is no hard limit baked into the software implementation itself.


It depends on CPU and what kind of cipher is used. See this link for more info

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