海运的博客

1.修改Openssl配置文件CA目录：

cat /etc/pki/tls/openssl.cnf
dir             = /etc/pki/CA

2.生成根证书及私钥：

#https://www.haiyun.me
cd /etc/pki/CA
mkdir private crl certs newcerts #新建证书存放目录
echo '00' > serial #新建serial文件并写入初始序列号00
touch index.txt #新建index.txt空文件
openssl genrsa -out private/cakey.pem 1024 #生成CA根证书私钥
openssl req -new -x509 -key private/cakey.pem  -out cacert.pem #生成CA根证书

3.生成服务器证书私钥、证书，可用于https服务器等。

openssl genrsa -out private/server.key 1024
openssl req -new -key private/server.key -out crl/server.csr #生成证书请求文件，可提供认证CA签核，或自签名。
openssl ca -in crl/server.csr -out certs/server.crt #自签名证书

Telnet连接SMTP服务器发送邮件：

telnet mail.haiyun.me 25
Trying 192.168.1.2...
Connected to smtp.haiyun.me (192.168.1.2).
Escape character is '^]'.
220 mail.www.haiyun.me ESMTP Postfix
mail from:mail@haiyun.me #发件人
250 2.1.0 Ok
rcpt to:test@haiyun.me #收件人
250 2.1.5 Ok
data #输入数据
354 End data with <CR><LF>.<CR><LF>
test mail #邮件内容
. #输入结束
250 2.0.0 Ok: queued as 6239437EA2C
quit #退出
221 2.0.0 Bye

Telnet连接POP服务器接收邮件：

telnet mail.haiyun.me 110
+OK Dovecot ready.
user test #用户
+OK
pass passwd #密码
+OK Logged in.
list #列出当前邮件
+OK 2 messages:
1 972
2 466
.
retr 2 #查看编号2邮件
+OK 466 octets
Return-Path: <mail@haiyun.me>
X-Original-To: test@haiyun.me
Delivered-To: test@haiyun.me
Received: from (test.haiyun.me [192.168.1.3])
    by mail.haiyun.me (Postfix) with SMTP id 6239437EA2C
    for <test@haiyun.me>; Wed,  4 Jul 2012 12:56:45 +0800 (CST)
Message-Id: <20120704045706.6239437EA2C@mail.haiyun.me>
Date: Wed,  4 Jul 2012 12:56:45 +0800 (CST)
From: mail@haiyun.me
To: undisclosed-recipients:;

test mail
.
quit
+OK Logging out.

Telnet连接IMAP服务器接收邮件：

telnet mail.haiyun.me 143
* OK Dovecot ready.
A01 LOGIN test passwd #登入用户、密码
A01 OK Logged in.
A02 LIST "" * #列出信箱列表    
* LIST (\HasNoChildren) "." "INBOX"
A02 OK List completed.
A03 Select "INBOX"  #选择信箱    
* FLAGS (\Answered \Flagged \Deleted \Seen \Draft)
* OK [PERMANENTFLAGS (\Answered \Flagged \Deleted \Seen \Draft \*)] Flags permitted.
* 2 EXISTS
* 0 RECENT
* OK [UIDVALIDITY 1341377220] UIDs valid
* OK [UIDNEXT 3] Predicted next UID
A03 OK [READ-WRITE] Select completed.
A04 Search ALL #查询所有邮件
* SEARCH 1 2
A04 OK Search completed.
A05 Fetch 2 full #获取邮件2内容
* 2 FETCH (FLAGS (\Seen) INTERNALDATE "04-Jul-2012 12:57:25 +0800" RFC822.SIZE 466 ENVELOPE ("Wed, 4 Jul 2012 12:56:45 +0800 (CST)" NIL ((NIL NIL "404344922" "qq.com")) ((NIL NIL "404344922" "qq.com")) ((NIL NIL "404344922" "qq.com")) ((NIL NIL "undisclosed-recipients" NIL)(NIL NIL "" "MISSING_DOMAIN")(NIL NIL NIL NIL)) NIL NIL NIL "<20120704045706.6239437EA2C@mail.www.haiyun.me>") BODY ("text" "plain" ("charset" "us-ascii") NIL NIL "7bit" 11 1))
A05 OK Fetch completed.
A06 logout #登出
* BYE Logging out
A06 OK Logout completed.

自从火狐升级到高版本之后左上角有一黄色菜单按钮，看着极不舒服，可以安装插件Stylish自定义颜色或不显示此按钮。
1.修改为不显示appmenu-button菜单：

#appmenu-button-container{
display: none !important;
}

2.自定义appmenu-button菜单颜色为绿色：

#appmenu-button-container{
{
background: green !important;
}

3.也可以使用vimperator插件自定义：

style -name=hidemenu * #appmenu-button-container{ display: none !important; }

发现一好玩的软件shellinabox，使用浏览器访问Web界面就可登录管理服务器shell终端，可使用https加密连接，比之使用putty或xshell连接ssh方便了许多。
Shellinabox安装：

wget http://shellinabox.googlecode.com/files/shellinabox-2.14.tar.gz
tar zxvf shellinabox-2.14.tar.gz 
cd shellinabox-2.14
./configure 
make
make install

Shellinabox参数：

-b #后台运行
-u #运行用户，默认nobody
-g #运行用户组
-p #监听端口，默认4200
-t #不以ssl运行
-c #证书目录

生成ssl证书：

openssl req -new -x509 -nodes -out server.crt -keyout server.key
cat server.crt server.key > /tmp/certificate.pem

启动Shellinabox：

shellinaboxd -b -c /tmp -p 8080

访问host:8080即可登录shell终端，效果如下：