TA的每日心情 | 开心 2016-5-12 14:23 |
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签到天数: 2 天 [LV.1]初来乍到
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一、 软件需求:
! u( w( M8 {, T, y0 Jpptpd-1.3.4、ppp-2.4.4、Apache、MySQL、freeradius(freeradius.org)
, V& C4 j3 ?3 a Q) [二、 安装PPTP
! b0 |/ W# v, b5 t, P1、操作系统使用RHEL5或者CENTOS5,内核版本为: 2.6.18-164.el5, 内核已支持MPPE,不用再安装。" \: d3 z& [; I
使用RPM方式安装pptpd和pppd
7 @! {- R0 p7 [9 @* ?* ^& Lrpm -ivh pptpd-1.3.4-.rhel5.1.i386.rpm# J/ D8 T( N6 _) S. A" Y4 \8 J
rpm -ivh ppp-2.4.4-2.el5.1.i386.rpm
$ Z, G5 p8 h; _* i8 E, |2、修改/etc/pptpd.conf主配置文件:+ N( H( c) W+ J$ o0 |* E
debug 开启debug,方便检查错误。, z' G; r" a9 A) q. }
ppp /usr/sbin/pppd pppd程序位置
3 Y) R: {2 e7 K v8 Toption /etc/ppp/options.pptpd pptpd的参数配置文件
# X# J3 _( C9 Y" k6 I3 k2 Zlocalip 172.16.10.1 服务器的IP地址0 w- b( s, J5 L0 [! K8 I3 J
remoteip 172.16.10.2-150 分配给客户端的IP地址池+ e& y: [8 P0 W5 D: S
3、修改/etc/ppp/options.pptpd" z1 O) F5 S8 O% x3 p3 l
lock1 l9 _& k3 G( i. j
debug
% S2 g$ |) b/ t( |9 ydump
5 q& {; J. q8 p: zlogfd 2
$ |+ R) n- }% D+ J' W9 W2 J$ q# B! mlogfile /var/log/pptpd.log
, `4 e+ E' z5 k4 R9 H3 Xname pptpd
) G8 @% s/ W2 ^1 W$ X5 nmtu 1450
+ Z# `2 i0 X6 f+ b- u, r* N, Smru 1450
4 e. t6 W+ V: k: P2 Tproxyarp- w- O3 H3 K( o( {- o
auth! s7 b! N* d( k4 V B; m, x
plugin /usr/local/lib/pppd/2.4.4/radius.so radius模块,若不需要radius可以注释掉
: G, z2 n" m0 B0 W0 mplugin /usr/local/lib/pppd/2.4.4/radattr.so radius属性模块
6 p" f) O. [& j7 Snobsdcomp
; `3 `) }# W+ L4 b5 t4 eipcp-accept-local
A V/ }# c' a6 a4 K/ q' e1 Mipcp-accept-remote; X7 T; L5 b# J6 k9 l, ~
lcp-echo-failure 3
* W6 v6 x2 Q( O: Y# ulcp-echo-interval 5* h, q, y5 L3 w1 q3 R6 E+ n
refuse-pap
3 a* X! p' S; c% a) Zrefuse-chap
1 b2 b1 [% K+ ?4 Y: Y5 u1 v/ Yrefuse-mschap" f; i" N3 T8 Q
refuse-eap0 N3 W) U0 @/ M- \8 b
require-mschap-v2
, w$ }: v- H0 Tmultilink9 {+ B9 W9 J; t2 W' C% F
require-mppe/ A% Z( y. [, y' b" \. t( S: X
ms-dns 202.98.96.68 客户端的DNS地址
M& r+ M2 C- Zms-dns 61.139.2.69
$ s2 d7 q% e7 z% J4、启动PPTP( x0 u2 b7 t! E2 @1 {
使用service pptpd start启动服务) q. K* d5 P4 C: i1 B9 l+ q% f
使用chkconfig pptpd on 使重启生效
8 |6 `% z& C7 |2 Y: v$ S0 P1 o 5、添加测试用户/etc/ppp/chap-secrets4 M2 u! _5 k( l! N' H/ [
2 G2 o7 t+ ]2 k' b, k# Secrets for authentication using CHAP
! ^; d' L1 l {# client server secret IP addresses
, L. l) t: g8 w3 Etest pptpd test *
( J( w" _, z0 d! r 6、客户端设置
3 C. Y9 u+ b x9 U( u 在windows XP上创建vpn连接,并测试(略):
! E: p- U9 ~( E5 [% ^三、 RADIUS与MYSQL安装:* ^/ z( O4 |+ `- _6 n) u
1、 安装与配置MySQL
" A* o5 Z% o9 F3 h使用yum方式安装MYSQL、php、Apache) C( P4 `8 {# \% s/ e* O
启动MySQL:service mysqld start" k- z S" `% r- l
更改MySQL的root用户的密码1 z9 U/ H2 g$ g/ C* T* @# Q; ]- o
# mysqladmin -u root -p password youpass# k& d0 v& n3 U" o3 W* b& c; C
#mysql -uroot -p youpass P, r! ~9 [" p
>create database radius; 创建一个名为radius的数据库
7 Q: `: o0 A1 T! n3 d" M/ A>exit
8 M! u- t. J6 V) K" g) [#chkconfig mysqld on 随系统启动
5 Z0 m4 J) f g4 d9 V0 @4 o$ T2、 radius安装
# [6 M/ A% {4 N# E5 ]从http://freeradius.org/ 获取 freeradius-server-2.1.7.tar.bz2
- m0 V4 A, }! e$ H; x. R#tar -xvf freeradius-server-2.1.7.tar.bz2& Q' K/ k4 R3 e& l
#cd freeradius-server-2.1.7
' n3 d" m" I( F& X9 @4 L/ T/ Q/ C9 q#./configure/ S5 M( B# [, Y7 x9 p* l/ P7 d
#make. f: V- C1 f, \; W9 t
#make install4 w1 N6 i) z3 L' Q2 h
#radiusd -X 使用debug模式运行radius
* q2 l( ^4 @/ [ r3 M/ y ]如果看到 "Ready to process requests."表示安装成功。( p% R( C$ k- e, t
3、修改freeradius支持MySQL。0 O& S+ A, ?1 C, ?0 f9 Q7 O6 R" o
#cd /usr/local/etc/raddb/sites-available
8 H! }$ U+ r, Q: K! \编辑default文件,把里面所有sql前面的#去掉。( L- k3 v, K5 K1 w% A7 G. W
# cd /usr/local/radius/etc/raddb/
! f3 q. ~- P1 u编辑radiusd.conf,去掉$INCLUDE sql.conf前面的#, P. o- d) I' s0 e
编辑sql.conf,
$ V/ w" r& e U( E% g: j) ^ # Connection info:* n' Y" M' f p, b3 Z) @9 L) S
server = "localhost"
3 p0 q( Q6 A8 s& o. O6 P% l4 ^ #port = 3306
, I/ W& i, V5 @2 C; J/ f login = "root"
" U a2 G. B7 D1 ?1 T: [; A password = "youpass" l) d: I- d* k. w+ T1 C
向mysql导入radius所需的数据库文件- [+ k4 l: p$ o; B) Q
#cd /usr/local/etc/raddb/sql/mysql
( u! M3 J8 v8 g& j# mysql -uroot -p radius < schema.sql
0 U3 Y* _. Z7 {9 ]+ e再用debug模式运行freeradius.5 b! S7 G( ^, e; ]) { R$ K* V0 [
# /usr/local/sbin/radiusd -X" L: N0 Y7 e+ D, ~ m" Z7 {: i0 x) k
有可能会出现. K6 x( ?* ~5 V( _+ {7 d
/usr/local/etc/raddb/sites-enabled/default[159]: Failed to find module "sql".2 Y9 t' w4 W! [& W) z' y
radius没有找到驱动去连接mysql。
$ R1 X! S5 e+ y+ b3 e+ U编译rlm_sql_mysql.so驱动
8 }' b7 t, ?4 @" u, X- j4 m4 `: T! J#cd freeradius-server-2.1.7/src/modules/rlm_sql/drivers/rlm_sql_mysql- u' Y V$ E! M: v; V* I
#./configure;make;make install( O# B) l1 L5 }& J
这个时候驱动会安装到/usr/local/lib目录下面,要把驱动复制到/usr/lib目录下
! v2 ?3 |- t- u) z; U0 P2 K#cp /usr/local/lib/rlm_sql_mysql* /usr/lib( q) ^* i8 w4 a, H$ G
接下来在数据库中添加测试用的用户
8 h) S$ m: ]) O) p8 ]- `2 n#mysql -uroot -p radius
* J7 D( V2 Y, t& K/ n& E( Y- C0 v1 B; b> INSERT INTO `radusergroup` (`username`,`groupname`,`priority`) VALUES ('','test',1);
2 N; v! Z' w3 w( Z> INSERT INTO `radusergroup` (`username`,`groupname`,`priority`) VALUES ('test','test',1);5 L2 k; Q) J; v" o% @" m1 H& f
> INSERT INTO `radcheck` (`id`,`username`,`attribute`,`op`,`value`) VALUES (1,'test','User-Password',':=','test');
. L, C6 f/ F. ^4 k" C- D2 n测试刚刚添加的用户能不能通过验证:
, G, T; w% U2 O同时开两个窗口,运行#radiusd -X, q! V3 s Q5 A3 p0 Z+ }
另一个窗口运行:#radtest freebsd freebsd localhost 0 testing123
7 I o" t0 L) z3 _- ~) x如果看到:"rad_recv:Access-Accept packet from host 127.0.0.1 ……",就已经成功了。& J0 C8 |# Y% O& l+ j/ `' a
4、 使用web界面管理radius用户" Y) z0 w' A1 l3 R4 q. X. N0 p
#cp -R ~/freeradius-server-2.1.7/dialup_admin /usr/local/4 G" Z$ r: R+ ?9 o; \, g: C
#ln -s /usr/local/dialup_admin /var/www/html/dialup_admin
a# D! v8 a( R8 _ E# G #cd /var/www/html/dialup_admin/conf
6 M! E4 i* j l) `* C 编辑admin.conf,修改如下内容
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general_encryption_method: clear
3 R$ m1 a5 A1 A& @! q( e+ usql_type: mysql7 f0 M: s5 |1 @9 E
sql_server: localhost# s/ F& e0 S5 o; ~1 E+ |# S# p
sql_port: 3306
8 D0 H/ t% ~" zsql_username: root
, x& M* a. U% f+ z# T! i" l9 M: lsql_password: youpass* ?( ]+ K4 ~0 U0 O$ N
sql_database: radius) K+ i0 J9 {& V9 C3 a b+ A
sql_usergroup_table: radusergroup- c7 |7 D, t- A' I, [ a2 \
# sql_debug: true: M0 x R3 G' |: p, h. U
配置Apache
- n, A4 h b- ~9 H修改:/etc/httpd/conf.d/php.conf0 T. I$ T9 t& }. j) [8 c
AddHandler php5-script .php .php3
" p) W% Y+ i6 B+ s9 q3 F; E修改:/etc/httpd/conf/httpd.conf" S$ I( r6 B8 n1 }6 h2 Z9 J* R
<Directory "/var/www/html/dialup_admin/htdocs">
+ Y2 Q0 [) e6 d% T: o7 h2 [启动apache:. J( m8 b$ a! s: e* C6 q
#service httpd start
8 }! f9 P/ \7 m" i S#chkconfig httpd on
% s& ?( e, A, g3 \. P打开浏览器就可以管理radius的用户了。* T" x* Q- r; m: o z# l, g7 m8 _
四、 使用radius验证pptpd用户; h' F* @' J& U: i8 s+ w
使用radius验证用户,需要安装radius模块,- Q% z% i+ @ l5 m
下载ppp-2.4.4.tar.gz源代码1 P0 W+ Y0 u$ ?' h' ~+ R
# tar -xvf ppp-2.4.4.tar.gz
: J" H+ z. W! u! q f* G5 V# cd ppp-2.4.4
: ]' S, @2 v( R0 K1 w0 S# C# ./configure //注意不要在这个地方编译安装。- K) g( R! E5 \1 A: {
#cd pppd/plugins/radius ; b/ `/ d& I9 \' @6 } g9 D: A
#make
% ?* ~+ p7 |, _ {0 o2 Q9 k#make install
' e1 u. V5 P; a! f# a. l6 b% c* l# cp -R etc /usr/local/etc/radiusclient. H: y" t5 _7 K
下面选项在使用radius验证时开启.需要注释掉local# I" x0 ? A2 g2 [, |
#vim /etc/ppp/options.pptpd! J9 J/ g1 e. {8 N4 _
plugin /usr/local/lib/pppd/2.4.4/radius.so //必须先加载radius验证模块,再加载radattr.so
& e( @' Q# \) M; m5 lplugin /usr/local/lib/pppd/2.4.4/radattr.so: z z6 L% F0 N q+ h; }
#cd /usr/local/radiusclient
4 \% K1 P. _- k0 b# Y' e3 L8 s#vim radiusclient.conf 编辑如下两行
' r; c( @/ k/ W9 jauthserver 127.0.0.1:1812 //radius验证" b0 {" y9 d4 C* g8 n! f$ l
acctserver 127.0.0.1:1813 //radius计费
6 \1 I' ^$ a+ w* X: Z& P1 z# vim servers
$ T, a& Y5 \1 Z" D2 G: [#Server Name or Client/Server pair Key
. q( _$ |% e/ i7 _+ \#---------------- ---------------
" e' c5 K; E7 W2 f1 G7 E#portmaster.elemental.net hardlyasecret6 i9 s7 w9 a/ b3 Q: W
#portmaster2.elemental.net donttellanyone3 j" i; I+ L% f* Z! {
127.0.0.1 testing1235 c$ |* p9 u# @: P6 U; ?0 L
重启pptpd: service pptpd restart
+ u7 P7 S+ a7 `五、带宽限制 q6 h( ?# v& J+ j, z& O( }
使用radius传回限速信息对客户端限速
2 x; q) K' R% P. e+ h; C, |基本原理,radius根据数据库里面的限速字段的属性,下发给PPTP服务器,服务器再根据接收到的限速字段属性来限制用户带宽。
; |$ f' i2 D" o: g8 {' L3 h+ i" G由于Linux的PPTP 限速字段不在radius默认的列表中,需要手动添加该字段。, ^+ o. A: N- c5 f# `8 R7 a- v
PPTP服务器:
7 V/ T; P* U, r/ V k- X#cd /usr/local/etc/radiusclient
8 r% X( R2 t4 Z, T! L# V+ p#vim dictionary 添加如下两行. D" H, }% y2 g& Y6 ^, ^- O; {4 d
ATTRIBUTE PPPD-Upstream-Speed-Limit 230 integer
3 E* f1 n: r1 v: B3 f& \: M0 `ATTRIBUTE PPPD-Downstream-Speed-Limit 231 integer
9 U, k6 M d3 M$ g9 y同样也需要在radius的dictionary中添加这两行。具体位置/usr/local/etc/raddb/# F+ x; j) p1 ^! _* f1 j2 K c x, _
还需要在数据库中加入:
4 N( y, Z. k3 gINSERT INTO `radgroupreply` VALUES (8,'test','PPPD-Upstream-Speed-Limit','=','512');
3 l: E8 h. h; BINSERT INTO `radgroupreply` VALUES (9,'test','PPPD-Downstream-Speed-Limit','=','512');+ v: K1 [% p9 i7 Y, ?& M
512是限制的带宽,单位是kbps. K0 Y P1 _( W6 C" a5 w# v
最后需要在/etc/ppp/目录下添加一个本地脚本,用TC来限制带宽:! P( ~$ Z' `7 M
脚本内容如下:
0 h: w& K% r, c$ M ^! O; P3 y#cat ip-up.local //注意。该脚本必须要有可执行权限。. y% A3 \- M7 B& y! D
#!/bin/bash5 t& v' G* X; K; [% M
PATH=/sbin:/usr/sbin:/bin:/usr/bin
( ~' C M7 u) F- dexport PATH7 P; r. w9 ~1 Z$ R9 h
# Get the attrbute from radius reply6 H8 e! Y! \( U7 U1 p' P, o
if [ -f /var/run/radattr. $1 ]
1 W1 L: I6 z4 ?, pthen
' i e! @0 E C2 B) x1 W# a DOWNSPEED=`/bin/awk '/PPPD-Downstream-Speed-Limit/ {print $2}' /var/run/radattr. $1`
" {$ ?" G4 v+ ^' w8 B UPSPEED=`/bin/awk '/PPPD-Upstream-Speed-Limit/ {print $2}' /var/run/radattr. $1`+ Z5 Q" Z7 _* t# a0 }1 [8 e( x
fi/ \% }" r: t% a$ r6 g' [8 e4 x+ B
# End
4 p6 Q* \ r9 H" C# Start Bandwidth Limit8 O. Z) r' a* D
/sbin/tc qdisc del dev $1 root > /dev/null
* j* `9 U& Z& y /sbin/tc qdisc del dev $1 ingress > /dev/null2 p+ R$ F$ n" P5 m7 \$ O
##### speed server->client, Q* b' G L+ h9 u. |
if [ "$DOWNSPEED" != "0" ] ;6 f; L( y1 h. i1 O8 x; S7 K
then
: ` @8 a2 n7 Y5 _* a/ N /sbin/tc qdisc add dev $1 root handle 1: htb default 20 r2q 1! ~! T$ A& O+ }! z% M
/sbin/tc class add dev $1 parent 1: classid 1:1 htb rate ${DOWNSPEED}kbit burst 4k4 |1 m; m! g. P% ~
/sbin/tc class add dev $1 parent 1:1 classid 1:10 htb rate ${DOWNSPEED}kbit burst 4k prio 12 f2 r; a m0 S% r% A, v
/sbin/tc class add dev $1 parent 1:1 classid 1:20 htb rate ${DOWNSPEED}kbit burst 4k prio 2
5 N* [3 q o6 O /sbin/tc qdisc add dev $1 parent 1:10 handle 10: sfq perturb 10 quantum 1500
2 `2 y1 z- }9 M8 l /sbin/tc qdisc add dev $1 parent 1:20 handle 20: sfq perturb 10 quantum 1500
- G8 C( j* _8 O. t7 k" T /sbin/tc filter add dev $1 parent 1:0 protocol ip prio 10 u32 match ip tos 0x10 0xff flowid 1:10/ s* @# |. i* g' [8 _
/sbin/tc filter add dev $1 parent 1:0 protocol ip prio 10 u32 match ip protocol 1 0xff flowid 1:10
_' ]- n; u, h /sbin/tc filter add dev $1 parent 1: protocol ip prio 10 u32 match ip protocol 6 0xff match u8 0x05 0x0f at 0 match u160x0000 0xffc0 at 2 match u8 0x10
d( ~% v- b$ T$ a0xff at 33 flowid 1:10
0 G) @; U7 w7 }. l5 S; b5 {* f fi: j$ m. t; b; b6 ?
##### speed client->server1 r/ K* a/ ~- _) u. g3 \5 ~; D
if [ "$UPSPEED" != "0" ] ;* T; c/ i. F- L' l3 i8 o% N% `' v
then" H+ e8 U0 W& ~/ c; H( W# [( l2 ^8 Q
/sbin/tc qdisc add dev $1 handle ffff: ingress( `4 b+ H8 C" a" S
/sbin/tc filter add dev $1 parent ffff: protocol ip prio 50 u32 match ip src 0.0.0.0/0 police rate ${UPSPEED}kbit burst 12k drop flowid :1 V+ q% N5 \# ?( o
fi
6 k' M6 D& `" {+ \# End
! T# X# r! y, G9 w0 ?六、 系统优化
0 m9 x% ^' N. ?6 q$ g/ g最后再做一些简单的系统优化,以满足较大的网络流量
/ A: @; u) Y- q m% T. d1 @net.ipv4.ip_forward = 1$ @8 D) ^. H& S
net.ipv4.conf.default.rp_filter = 11 W4 T6 J" Z t
net.ipv4.conf.default.accept_source_route = 03 a: _- m% ~9 Q- ~% \9 W4 {
kernel.sysrq = 0% B8 ~- K+ F) J% F8 d6 o, g
kernel.core_uses_pid = 1
+ M4 b. c f& |, [0 y) H3 b- K) gnet.ipv4.tcp_syncookies = 1) u% f9 r# I1 p( _
kernel.msgmnb = 65536' n; w7 E' Z! U
kernel.msgmax = 65536
* X' y/ `! i4 H4 }" Kkernel.shmmax = 4294967295
) W! Y D- P# ~7 pkernel.shmall = 268435456
' }7 V4 i" v& N! |2 w% _2 ynet.core.rmem_max = 12582912
; r B1 h# s# X9 Rnet.core.rmem_max = 12582912
( H0 c0 i, k- J; B& ?net.ipv4.tcp_rmem = 10240 87380 125829129 r; i3 z7 c3 Z8 ^# U) x4 r
net.ipv4.tcp_wmem = 10240 87380 12582912
. M4 s6 R+ t, r2 M! T! V# j& ]net.ipv4.tcp_no_metrics_save = 15 Q/ a" C3 u8 d$ L( q/ [. ^! J7 V( v3 R
net.core.netdev_max_backlog = 5000
: `) W/ B7 H# [0 m G+ h如果想要对拨入用户做NAT,可以使用IPTABLES做- j" f- Q( x8 G# q
#iptables -t nat -A POSTROUTING -j MASQUERADE, {- s0 T/ h0 [! u% I
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