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Hi,
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<div>I'm encountering the situation where Charon crashes after trying to initiate 990+ IKE SAs. What we're trying to do here is a stress test against our VPN server.</div>
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<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: 13[IKE] IKE_SA CONN00988[988] established between 100.84.217.47[INIT00988]...1.2.3.4[1.2.3.4]</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 13[ENC] generating AGGRESSIVE request 0 [ HASH NAT-D NAT-D ]</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 13[NET] sending packet: from 100.84.217.47[10988] to 1.2.3.4[4500] (108 bytes)</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 13[ENC] generating QUICK_MODE request 4075658581 [ HASH SA No KE ID ID ]</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 13[NET] sending packet: from 100.84.217.47[10988] to 1.2.3.4[4500] (316 bytes)</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 05[IKE] initiating Aggressive Mode IKE_SA CONN00997[997] to 1.2.3.4</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 05[ENC] generating AGGRESSIVE request 0 [ SA KE No ID V V V V V ]</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 05[NET] sending packet: from 100.84.217.47[10997] to 1.2.3.4[4500] (367 bytes)</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 06[CFG] received stroke: add connection 'CONN00998'</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 06[CFG] added configuration 'CONN00998'</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: 13[IK*** buffer overflow detected ***: /usr/lib/ipsec/charon terminated</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 charon: 10[CFG] received stroke: initiate '10_akei00998'</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: reading stroke response failed</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: connecting to 'unix:///var/run/charon.ctl' failed: Connection refused</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: failed to connect to stroke socket 'unix:///var/run/charon.ctl'</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: connecting to 'unix:///var/run/charon.ctl' failed: Connection refused</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: failed to connect to stroke socket 'unix:///var/run/charon.ctl'</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: connecting to 'unix:///var/run/charon.ctl' failed: Connection refused</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: failed to connect to stroke socket 'unix:///var/run/charon.ctl'</div>
<div>> Nov 17 21:54:24 ip-100-84-217-47 ipsec[2175]: charon has died -- restart scheduled (5sec)</div>
<div>> Nov 17 21:54:25 ip-100-84-217-47 systemd[1]: Started Session 4 of user ubuntu.</div>
<div>> Nov 17 21:54:29 ip-100-84-217-47 charon: 00[DMN] Starting IKE charon daemon (strongSwan 5.6.2, Linux 5.4.0-1029-aws, x86_64)</div>
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<div>Could anybody tell me what I should do differently, so that it can initiate up to 20,000 IKE SAs? Here's the config I'm using on the initiator side...</div>
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<div>> config setup</div>
<div>> conn %default</div>
<div>> right=1.2.3.4</div>
<div>> ikelifetime=3600s</div>
<div>> keylife=28800s</div>
<div>> rekeymargin=3m</div>
<div>> keyingtries=1</div>
<div>> keyexchange=ikev1</div>
<div>> leftauth=psk</div>
<div>> rightauth=psk</div>
<div>> ike=aes128-sha1-modp1024!</div>
<div>> esp=aes128-sha1-modp1024!</div>
<div>> authby=secret</div>
<div>> aggressive=yes</div>
<div>> rightsubnet=100.110.171.0/24</div>
<div>> auto=add</div>
<div>> conn CONN00001</div>
<div>> leftid=@INIT00001</div>
<div>> leftsubnet=10.1.1.0/24</div>
<div>> leftikeport=10001</div>
<div>> rightikeport=4500</div>
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<div>Any suggestions or comments would be greatly appreciated.</div>
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<div>Best regards,</div>
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jellybeanshiba<br>
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