Hi, I am having problems with setting multiple ISP links and openvpn roadwarrior with Centos.
The firewall I have is designed to run on both links, actively used and redirect traffic from DMZ and LAN based on their services to specific providers. I am able to get the firewall running to the state where a simple Internet, DMZ, LAN topology works and able to redirect traffics and DNAT services to certain provider links based on the requirement. However, when I add openvpn in the firewall and set it as vpn server for roadwarrior, I am not able to connect to the openvpn port with telnet from public internet. For some reason, it is blocked. Openvpn runs on tun0 and I can confirm it is running by telnet to port 443 tcp (the port I used for openvpn) from the firewall itself and the openvpn service is running. I collect logs for all REJECT and DROP packets but cannot see the attempted traffic in that log. Attached is the dump from shorewall. This is what I have done based on the documentation from shorewall: /etc/shorewall/interfaces: #ZONE INTERFACE OPTIONS net eth0 detect net eth1 detect dmz eth2 detect loc eth3 detect road tun+ /etc/shorewall/zones: fw firewall net ipv4 loc ipv4 dmz ipv4 road ipv4 /etc/shorewall/policy: net net DROP info # traffic to internet loc net ACCEPT dmz net REJECT info # traffic to dmz loc dmz ACCEPT # traffic from roadwarrior road loc ACCEPT road dmz ACCEPT # traffic to firewall loc $FW REJECT info # traffic from firewall $FW all ACCEPT # traffic from internet net all DROP info # catch all all all DROP info /etc/shorewall/providers: ISPIIN 1 1 main eth1 218.206.228.101 track,balance=100 eth2,eth3,tun0 ISPAC3 2 2 main eth0 218.202.139.222 track,balance=50 eth2,eth3 /etc/shorewall/tcrules: # redirect service from LAN to (1) iinet or (2) ac3 1:P 10.35.249.0/24 0.0.0.0/0 tcp 80 2:P 10.35.249.0/24 0.0.0.0/0 tcp 3389 # redirect service from DMZ to (1) iinet or (2) ac3 1:P 192.168.168.0/24 0.0.0.0/0 tcp 80 1:P 192.168.168.0/24 0.0.0.0/0 tcp 443 1:P 192.168.168.0/24 0.0.0.0/0 tcp 53 1:P 192.168.168.0/24 0.0.0.0/0 udp 53 1:P 192.168.168.0/24 0.0.0.0/0 udp 123 1:P 192.168.168.0/24 0.0.0.0/0 icmp 8 1:P 192.168.168.0/24 0.0.0.0/0 tcp 21 #2:P 192.168.168.0/24 0.0.0.0/0 icmp 8 /etc/shorewall/rtrules: #here not using USE_DEFAULT_RT - 172.16.1.0/24 main 1000 /etc/shorewall/tunnels: openvpnserver:tcp:443 net 0.0.0.0/0 # Internet to ALL -- drop NewNotSyn packets dropNotSyn net fw tcp dropNotSyn net loc tcp dropNotSyn net dmz tcp #---FROM LAN--- SSH(ACCEPT) loc $FW - - - - s:1/min:3 #---FROM DMZ--- HTTP(ACCEPT) dmz net HTTPS(ACCEPT) dmz net DNS(ACCEPT) dmz net NTP(ACCEPT) dmz net Ping(ACCEPT) dmz net FTP(ACCEPT) dmz net #---DNAT Rules--- DNAT net:eth1 dmz:192.168.168.10:80 tcp 8080 - 218.206.228.102 DNAT net:eth1 loc:10.35.249.53:80 tcp 8081 - 218.206.228.102 #---Services within Firewall--- # openvpn - tcp 443 ACCEPT net $FW tcp 443 - 218.202.228.102 #---Temporary Rules--- ACCEPT net:124.149.32.217 $FW tcp 22 - 218.206.228.102 #Block stealth Auth port 113 (must be at the end) Auth(DROP) net $FW /etc/shorewall/shorewall.conf (diff from the original setting): < STARTUP_ENABLED=Yes < LOGLIMIT=s:5/sec < STARTUP_LOG=/var/log/firewall/shorewall-init.log < MARK_IN_FORWARD_CHAIN=Yes Could someone give a hint what went wrong? I'd really appreciate it. Many thanks. -Lito
dump-20120428.log.gz
Description: GNU Zip compressed data
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