[已解决]求助vpn登录不了 rc_send_server: no reply from RADIUS server unknown:18
本帖最后由 zhumeng99 于 2013-2-28 17:42 编辑我搭建了一个vpn环境pptp/l2tp+freeradius-client通过radiusmanager验证，
CentOS5.8
pptp-1.3.4
freeradius-client-1.1.6
freeradius-server-2.1.8
radiusmanager-3.8
现在登录不了vpn，
vpn服务器的日志如下：
#tail -f /var/log/messages
May 18 11:50:54 vpn3 pppd: Using interface ppp0
May 18 11:50:54 vpn3 pppd: Connect: ppp0 <--> /dev/pts/2
May 18 11:50:54 vpn3 pptpd: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
May 18 11:51:40 vpn3 pppd: rc_ip_hostname: couldn't look up host by addr: %lX
May 18 11:51:40 vpn3 pppd: rc_send_server: no reply from RADIUS server unknown:1812
May 18 11:51:40 vpn3 pppd: Peer yxf001 failed CHAP authentication
May 18 11:51:40 vpn3 pppd: Modem hangup
May 18 11:51:40 vpn3 pppd: Connection terminated.
May 18 11:51:40 vpn3 pppd: Exit.
May 18 11:51:40 vpn3 pptpd: CTRL: Client 192.168.0.110 control connection finished
May 18 12:35:28 vpn3 pptpd: CTRL: Client 192.168.0.110 control connection started
May 18 12:35:28 vpn3 pptpd: CTRL: Starting call (launching pppd, opening GRE)
May 18 12:35:28 vpn3 pppd: Plugin /usr/lib/pppd/2.4.4/radius.so loaded.
May 18 12:35:28 vpn3 pppd: RADIUS plugin initialized.
May 18 12:35:28 vpn3 pppd: Plugin /usr/lib/pppd/2.4.4/radattr.so loaded.
May 18 12:35:28 vpn3 pppd: RADATTR plugin initialized.
May 18 12:35:28 vpn3 pppd: pppd options in effect:
May 18 12:35:28 vpn3 pppd: debug # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: idle 1800 # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: nologfd # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: dump # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: plugin /usr/lib/pppd/2.4.4/radius.so # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: plugin /usr/lib/pppd/2.4.4/radattr.so # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: auth # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: name pptpd # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: radius-config-file /usr/local/etc/radiusclient/radiusclient.conf # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: 115200 # (from command line)
May 18 12:35:28 vpn3 pppd: lock # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: local # (from command line)
May 18 12:35:28 vpn3 pppd: noaccomp # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: lcp-echo-failure 8 # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: lcp-echo-interval 60 # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: novj # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: novjccomp # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: ipparam 192.168.0.110 # (from command line)
May 18 12:35:28 vpn3 pppd: ms-dns xxx # # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: ms-wins xxx # # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: proxyarp # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: 10.3.0.1:10.3.0.2 # (from command line)
May 18 12:35:28 vpn3 pppd: nobsdcomp # (from /etc/options.pptpd)
May 18 12:35:28 vpn3 pppd: pppd 2.4.4 started by root, uid 0
May 18 12:35:28 vpn3 pppd: Using interface ppp0
May 18 12:35:28 vpn3 pppd: Connect: ppp0 <--> /dev/pts/2
May 18 12:35:28 vpn3 pptpd: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
May 18 12:36:14 vpn3 pppd: rc_ip_hostname: couldn't look up host by addr: %lX
May 18 12:36:14 vpn3 pppd: rc_send_server: no reply from RADIUS server unknown:1812
May 18 12:36:14 vpn3 pppd: Peer yxf001 failed CHAP authentication
May 18 12:36:14 vpn3 pppd: Modem hangup
May 18 12:36:14 vpn3 pppd: Connection terminated.
May 18 12:36:14 vpn3 pppd: Exit.
May 18 12:36:14 vpn3 pptpd: CTRL: Client 192.168.0.110 control connection finished
vpn：192.168.0.123（虚拟机）
radius:192.168.0.119（虚拟机）
本机：192.168.0.110
用本机连接192.168.0.123，出错
求助啊
求助啊！............................. 已解决！
分享一下解决方法！
方法如下：
在vpn服务器输入一下防火墙规则！iptables -A OUTPUT -d 192.168.0.119 -p udp -m udp --dport 1812 -j ACCEPT
iptables -A OUTPUT -d 192.168.0.119 -p udp -m udp --dport 1813 -j ACCEPT 感谢楼主分享此问题解决方案
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