I have tried almost anything – my internet connection 500 Mbit/s
I connect from the same external IP subnet so my speed to the server is also 500 Mbit/s.
When i use wget from my l2tp server i have 450 Mbit/s download.
When i connect to this server from windows host via l2tp/ipsec and do speed test of the internet connection i get around 1.5 Mbit/s
my Strongswan ipsec.conf:
config setup
conn %defult
ikelifetime=28800s
lifetime=3600s
keyingtries=1
keyexchange=ikev1
conn L2TP
ike=aes256-sha256-modp1024
esp=aes256-sha256
authby=secret
left=212.14.7.22
leftid=212.14.7.22
leftprotoport=17/%any
rightprotoport=17/%any
right=%any
rightsubnet=0.0.0.0/0
ikelifetime=8h
keylife=1h
rekey=no
auto=add
type=transport
fragmentation=yes
dpddelay=30
dpdtimeout=120
dpdaction=clear
conn clear
auto=ignore
My xl2tpd.conf:
[global]
port = 1701
[lns default]
ip range = 10.111.111.2-10.111.111.102
local ip = 10.111.111.1
require chap = yes
refuse pap = yes
require authentication = yes
name = hub-d10-l2tpd
ppp debug = yes
pppoptfile = /etc/ppp/options.xl2tpd
length bit = yes
my options.xl2tpd:
ipcp-accept-local
ipcp-accept-remote
require-mschap-v2
ms-dns 8.8.8.8
proxyarp
noccp
auth
debug
defaultroute
idle 1800
mtu 1280
mru 1280
connect-delay 5000
Iptables as easy as it can be:
# Generated by xtables-save v1.8.2 on Thu Jul 11 09:00:00 2019
*nat
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A POSTROUTING -s 10.111.111.0/24 -o ens192 -j MASQUERADE
COMMIT
# Completed on Thu Jul 11 09:00:00 2019
I have tried to change mtu/mru from 1200 to 1420 – didn't helped.
This is fresh Debian 10 install but i have also tried on Deb 9.
Any ideas ?
Best Answer
OK, finally have found a problem. It was my laptop poor performance. I have tested it now on intel core i7 client and achieved 285Mbit/s. It coud be more but i7 still is bottleneck:
Greetrings. Kris