我有一台运行Ubuntu和Openswan的服务器，但是我无法连接到远程防火墙。 我希望有人能帮助我。
我的ipsec.conf文件如下：
config setup protostack=netkey nat_traversal=yes nhelpers=0 plutodebug=all conn zyxel type=tunnel authby=secret left=*.*.*.* #min ip leftsubnet=*.*.*.*/* #mitt subnet leftid=@*** #brukernavn right=*.*.*.* #brannmurens ip rightsubnet=*.*.*.*/* #brannmurens subnet auth=esp ike=des-md5 esp=des-sha1 pfs=yes aggrmode=yes 我通过运行这些命令来启动openswan：
/etc/init.d/ipsec start ipsec auto --add zyxel ipsec whack --name zyxel --initiate
没有什么显示在我的terminal，但是当我尾巴/var/log/auth.log我得到以下错误：
Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | returning new proposal from esp_info Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | creating state object #1 at 0x927f8d8 Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | processing connection zyxel Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | ICOOKIE: 24 cd d1 e4 b4 3d 65 a0 Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | RCOOKIE: 00 00 00 00 00 00 00 00 Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | state hash entry 16 Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | inserting state object #1 on chain 16 Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | inserting event EVENT_SO_DISCARD, timeout in 0 seconds for #1 Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | event added at head of queue Aug 11 11:43:49 ole-VirtualBox pluto[28572]: | oakley_alg_makedb() ike enc ealg=1 not present
我真的希望有人知道该怎么做，因为我不知道。