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Visitor
send2kb
Posts: 5
Registered: ‎04-30-2008
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Accepted Solution

Help with SSG5 DMZ Setup...

All,

 

I'm a newbie trying to setup our SSG5.  I must setup our web servers to be placed within the DMZ zone.  I'm not quite sure where I should begin.  I tried for 2 weeks now trying to set this up but I've been unsuccessful.  If any veteran out there can help me out or point me to a quick DMZ guide 101, that would be great.  All I'm trying to to is place 2 web servers within the DMZ so http/https are possible for both incoming and outgoing.  Also, how do I get DMZ hosts to communicate with hosts in the trusted zone?  I thank everyone in advance.

Recognized Expert
traceoptions
Posts: 152
Registered: ‎04-29-2008
0

Re: Help with SSG5 DMZ Setup...

[ Edited ]

If your DMZ is publicly addressed, this should be pretty straight forward.

 

1.) You will need an interface assigned to the DMZ zone

 

On the Juniper SSG5 interface ethernet0/1 is set to the DMZ zone by default.

 

2.) You will need the IP address setup on that interface.

 

set interface ethernet0/1 ip x.x.x.x/x    

 

3.) You will need policies applied to allow access.

                        

Create a group for the services.

 

set group service "Web_Services"

set group service "Web_Services" add "HTTPS"  

set group service "Web_Services" add "HTTP"

 

Create an address group for your web servers on your DMZ.  Here is an example.

 

set address "DMZ" "httpserver1" 10.10.10.10 255.255.255.255

set address "DMZ" "httpserver2" 10.10.10.11 255.255.255.255

set group address "DMZ" "Web_Sites"

set group address "DMZ" "Web_Sites" add "httpserver1"

set group address "DMZ" "Web_Sites" add "httpserver2" 

 

Then create a policy.  If you cross a zone boundary you must apply a policy to allow traffic.

 

set policy from "Trust" to "DMZ"  "Any" "Web_Sites" "Web_Services"  permit log count 

set policy from "Untrust" to "DMZ"  "Any" "Web_Sites" "Web_Services"  permit log count  

 

If you need the web servers to access outbound

 

set policy from "DMZ" to "Untrust"  "Web_Sites" "Any" "Web_Services"  permit log count   

 

 

If you have a private address DMZ, and need to perform one to one NAT.  Then you can create MIPs.  I go under the assumption that you have e0/0 configured as your untrust IP and that you have a allocation assigned to that range.

 

 

set interface "ethernet0/0" mip X.X.X.X/X host 172.16.1.5 netmask 255.255.255.255 vr "trust-vr"  

 

Then apply the policies listed above to the MIP object.  

 

set policy id 6 from "Untrust" to "DMZ"  "Any" "MIP(X.X.X.X)" "Web_Services" permit log count

 

 

Hopefully this helps. 

 

Message Edited by shadow on 04-30-2008 11:34 PM
JNCIE-ENT #424 JNCIP-SEC, JNCI @traceoptions

**If this worked for you please flag my post as an Accepted Solution so others can benefit.**
Visitor
send2kb
Posts: 5
Registered: ‎04-30-2008
0

Re: Help with SSG5 DMZ Setup...

Thank you.  I will give this a try.

Visitor
send2kb
Posts: 5
Registered: ‎04-30-2008
0

Re: Help with SSG5 DMZ Setup...

For some reason, I am unable to go out to Internet from DMZ and reach the machines inside the DMZ.  I most important thing is that I am not sure what I need to put as the Default gateway?  thank you in advance.
Recognized Expert
traceoptions
Posts: 152
Registered: ‎04-29-2008
0

Re: Help with SSG5 DMZ Setup...

Your untrust interface has a gateway setting that you set for your default gateway

 

set interface ethernet0/0 gateway x.x.x.x

 

1.) Can you post a bit more info on your config.  Can you do a "get int" and a "get policy" and post it.  

 

 

 

 

 

JNCIE-ENT #424 JNCIP-SEC, JNCI @traceoptions

**If this worked for you please flag my post as an Accepted Solution so others can benefit.**
Visitor
send2kb
Posts: 5
Registered: ‎04-30-2008
0

Re: Help with SSG5 DMZ Setup...

[ Edited ]

Below is my config file. BTW, I'm using the WebUI since I am unable to ssh into my SSG. Thank you in advance.

=====================

set clock timezone -5
set vrouter trust-vr sharable
set vrouter "untrust-vr"
exit
set vrouter "trust-vr"
unset auto-route-export
exit
set auth-server "Local" id 0
set auth-server "Local" server-name "Local"
set auth default auth server "Local"
set auth radius accounting port 1646


set admin auth timeout 10
set admin auth server "Local"
set admin format dos
set zone "Trust" vrouter "trust-vr"
set zone "Untrust" vrouter "trust-vr"
set zone "DMZ" vrouter "trust-vr"
set zone "VLAN" vrouter "trust-vr"
set zone "Untrust-Tun" vrouter "trust-vr"
set zone "Trust" tcp-rst
set zone "Untrust" block
unset zone "Untrust" tcp-rst
set zone "DMZ" tcp-rst
set zone "VLAN" block
unset zone "VLAN" tcp-rst
set zone "Trust" screen icmp-flood
set zone "Trust" screen udp-flood
set zone "Trust" screen winnuke
set zone "Trust" screen tear-drop
set zone "Trust" screen ping-death
set zone "Trust" screen icmp-fragment
set zone "Trust" screen icmp-large
set zone "Trust" screen icmp-id
set zone "Untrust" screen icmp-flood
set zone "Untrust" screen udp-flood
set zone "Untrust" screen winnuke
set zone "Untrust" screen port-scan
set zone "Untrust" screen ip-sweep
set zone "Untrust" screen tear-drop
set zone "Untrust" screen syn-flood
set zone "Untrust" screen ip-spoofing
set zone "Untrust" screen ping-death
set zone "Untrust" screen ip-filter-src
set zone "Untrust" screen land
set zone "Untrust" screen icmp-large
set zone "Untrust" screen ip-spoofing drop-no-rpf-route
set zone "V1-Untrust" screen tear-drop
set zone "V1-Untrust" screen syn-flood
set zone "V1-Untrust" screen ping-death
set zone "V1-Untrust" screen ip-filter-src
set zone "V1-Untrust" screen land
set zone "DMZ" screen winnuke
set zone "DMZ" screen port-scan
set zone "DMZ" screen ip-sweep
set zone "DMZ" screen tear-drop
set zone "DMZ" screen ip-spoofing
set zone "DMZ" screen ping-death
set zone "DMZ" screen icmp-fragment
set zone "DMZ" screen icmp-large
set zone "DMZ" screen icmp-id
set zone "DMZ" screen ip-spoofing drop-no-rpf-route
set zone "Untrust" screen icmp-flood threshold 10
set zone "Untrust" screen udp-flood threshold 10
set interface "ethernet0/0" zone "Untrust"
set interface "ethernet0/1" zone "DMZ"
set interface "wireless0/0" zone "Trust"
set interface "bgroup0" zone "Trust"
set interface bgroup0 port ethernet0/2
set interface bgroup0 port ethernet0/3
set interface bgroup0 port ethernet0/4
set interface bgroup0 port ethernet0/5
set interface bgroup0 port ethernet0/6
unset interface vlan1 ip
set interface ethernet0/0 ip 70.164.42.140/27
set interface ethernet0/0 route
set interface ethernet0/1 ip 70.184.245.176/28
set interface ethernet0/1 route
set interface wireless0/0 ip 192.168.2.1/24
set interface wireless0/0 nat
set interface bgroup0 ip 192.168.1.1/24
set interface bgroup0 nat
set interface ethernet0/0 gateway 70.164.42.129
unset interface vlan1 bypass-others-ipsec
unset interface vlan1 bypass-non-ip
set interface ethernet0/0 ip manageable
set interface ethernet0/1 ip manageable
set interface wireless0/0 ip manageable
set interface bgroup0 ip manageable
unset interface ethernet0/1 manage ping
unset interface bgroup0 manage telnet
set interface bgroup0 manage mtrace
set interface wireless0/0 dhcp server service
set interface bgroup0 dhcp server service
set interface wireless0/0 dhcp server auto
set interface bgroup0 dhcp server auto
set interface wireless0/0 dhcp server option dns1 68.10.18.42

set interface wireless0/0 dhcp server option dns2 68.10.18.50

set interface bgroup0 dhcp server option dns1 68.100.16.30
set interface bgroup0 dhcp server option dns2 68.10.16.30
set interface wireless0/0 dhcp server ip 192.168.2.33 to 192.168.2.126
set interface bgroup0 dhcp server ip 192.168.1.33 to 192.168.1.126
set interface bgroup0 dhcp server ip 192.168.1.3 mac 008077946365
unset interface wireless0/0 dhcp server config next-server-ip
unset interface bgroup0 dhcp server config next-server-ip
set interface "serial0/0" modem settings "USR" init "AT&F"
set interface "serial0/0" modem settings "USR" active
set interface "serial0/0" modem speed 115200
set interface "serial0/0" modem retry 3
set interface "serial0/0" modem interval 10
set interface "serial0/0" modem idle-time 10
set flow tcp-mss
unset flow tcp-syn-check
set domain bcmcgroup.com
set hostname linx
set pki authority default scep mode "auto"
set pki x509 default cert-path partial
set dns host dns3 0.0.0.0
set ike respond-bad-spi 1
unset ike ikeid-enumeration
unset ike dos-protection
unset ipsec access-session enable
set ipsec access-session maximum 5000
set ipsec access-session upper-threshold 0
set ipsec access-session lower-threshold 0
set ipsec access-session dead-p2-sa-timeout 0
unset ipsec access-session log-error
unset ipsec access-session info-exch-connected
unset ipsec access-session use-error-log
set url protocol websense
exit
set policy id 1 from "Trust" to "Untrust" "Any" "Any" "ANY" permit
set policy id 1
exit
set policy id 2 from "Trust" to "DMZ" "Any" "WEB_SITES" "WEB_HOSTING_SERVICES" permit log count
set policy id 2
exit
set policy id 3 from "Untrust" to "DMZ" "Any" "WEB_SITES" "WEB_HOSTING_SERVICES" permit log count
set policy id 3
exit
set nsmgmt bulkcli reboot-timeout 60
set ssh version v2
set config lock timeout 5
set wlan 0 channel 8
set wlan 1 channel auto
set snmp port listen 161
set snmp port trap 162
set vrouter "untrust-vr"
exit
set vrouter "trust-vr"
unset add-default-route
exit
set vrouter "untrust-vr"
exit
set vrouter "trust-vr"
exit

Message Edited by send2kb on 05-13-2008 08:13 PM
Message Edited by send2kb on 05-15-2008 08:19 AM
Distinguished Expert
rkim
Posts: 755
Registered: ‎11-06-2007
0

Re: Help with SSG5 DMZ Setup...

I would suggest running debug flow basic to find out how the firewall is treating the traffic. Example below:

 

set ff src-ip <ip of webserver>

set ff dst-ip <ip of webserver>

debug flow basic

clear db

 

# try reaching your web server

 

undebug all

get db stream

 

Post your output for review.

 

-Richard

Visitor
send2kb
Posts: 5
Registered: ‎04-30-2008
0

Re: Help with SSG5 DMZ Setup...

I got everything working last night.  Shadow and rKim thank you so much for your help.  I reviewed what I did and basically I did not follow Shadow's instructions correctly.  Again, THANK YOU.
New User
amrani
Posts: 1
Registered: ‎01-31-2009
0

Re: Help with SSG5 DMZ Setup...

could you tell us how to solve the problem, actually i have the same problem , canno access internet from DMZ. i did the policy,routing and it seems to be working but the internet does not work in the dmz clients.
New User
KK-edwin
Posts: 1
Registered: ‎01-03-2011
0

Re: Help with SSG5 DMZ Setup...

Dear ALL,

 

That was a good tips for me ... I will do that next .... but I get before this steps.

 

I put the server to the DMZ .... and the ethernet0/0 is in DHCP client for the Internet connection.  Here is the interface configure.

 

 

set interface ethernet0/0 ip xxx.xxx.43.151/25
set interface ethernet0/0 route
set interface ethernet0/1 ip 172.16.0.126/25
set interface ethernet0/1 nat
set interface bgroup0 ip 192.168.1.1/24
set interface bgroup0 nat

 

 

And here is the policy configure: 

 

 

set policy id 1 from "Trust" to "Untrust"  "Any" "Any" "ANY" permit 

set policy id 1

exit         

set policy id 2 from "DMZ" to "Untrust"  "Any" "Any" "ANY" permit 

set policy id 2

exit

set policy id 3 from "Trust" to "DMZ"  "Any" "Any" "ANY" permit 

set policy id 3

exit

My problem is that the server in DMZ can access ethernet0/0 any services .... such as DNS, HTTP ...etc.  Any idea what happen !?  Please advise.
Edwin

 

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