# Ipsec differences between devices: is kmod-crypto-ctr the problem?

**URL:** <https://forum.openwrt.org/t/ipsec-differences-between-devices-is-kmod-crypto-ctr-the-problem/44461>\
**Category:** For Developers\
**Created:** [September 12, 2019, 11:05am UTC](https://forum.openwrt.org/t/ipsec-differences-between-devices-is-kmod-crypto-ctr-the-problem/44461 "2019-09-12T11:05:38Z")\
**Posts on this page:** 1\
**Showing post:** 28

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**Author:** ![cwbsw](https://forum.openwrt.org/user_avatar/forum.openwrt.org/cwbsw/32/4609_2.png) [@cwbsw](https://forum.openwrt.org/u/cwbsw)\
**Post date:** [October 19, 2019, 1:23am UTC](https://forum.openwrt.org/t/ipsec-differences-between-devices-is-kmod-crypto-ctr-the-problem/44461/28 "2019-10-19T01:23:16Z")

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qce hw-crypto breaks ipsec, disabling CRYPTO\_HW is needed.

> [@IPsec performance issue](https://forum.openwrt.org/t/ipsec-performance-issue/39690):
>
> My device is gl-inet b1300, an ipq4029 router, flashed with OpenWrt latest snapshot firmware, it is my home lan's gateway, and I set up an IPsec server with strongswan on it. Everything looks good, no error message, but I encounter some strange performance issues. I tested following scenarios: Youtube App → IPsec → b1300 → ISP's PPPoE link → [youtube.com](http://youtube.com)(udp protocol), seems good, I can playback 1080p video smoothly. Browser → IPsec → b1300 → ISP‘s PPPoE link → websites(tcp protocol), I can bro…

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