cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1300
Views
4
Helpful
8
Replies

Configure Cisco Web Security Appliance (WSA) s196

Ced W
Level 1
Level 1

Hi crew ...!

I have just received Secure Web Appliance s196 to configure and install to turn up new proxy servers. I do not have experience with proxy servers but I am a network guy. I am trying to place the device between our border 5525x ASA router/firewall and edge switch. I am simply trying to configure it to call home in order to run the setup wizard and bring the license down. I have added a DNS record for the device and configured the DNS on the device, configured the management port so I do have web and remote CLI access to the device. However, I am not sure what information goes in the P1 or P2 ports . I do know that I want to configure it for duplex tap to monitor traffic on the same T1for in/out. I can send config settings if needed.

Any help is much appreciated ...!

1 Accepted Solution

Accepted Solutions

Put the management port on a management vlan that's allowed to get to the internet.
Requirements for that are here:
https://www.cisco.com/c/en/us/support/docs/security/secure-web-appliance/220375-use-secure-web-appliance-best-practices.html
(plus TONS of other good stuff)


You need to make the call on whether to use WCCP or explicit redirection.
https://www.cisco.com/c/en/us/support/docs/security/web-security-appliance/117940-qa-wsa-00.html
I used WCCP. I put P1 on the same subnet/vlan as the inside interface of the firewall, and then use WCCP off of the inside interface of the ASA to send traffic to the WSA for filtering, b

A bunch of good info here:
https://www.cisco.com/c/en/us/support/security/web-security-appliance/series.html

There's a section in here starting on page 10, but its not great. I had a good one that I'm still digging for ...
https://www.cisco.com/c/dam/en/us/td/docs/solutions/Enterprise/Education/CCVE/ccve_sba_security_design.pdf

View solution in original post

8 Replies 8

Put the management port on a management vlan that's allowed to get to the internet.
Requirements for that are here:
https://www.cisco.com/c/en/us/support/docs/security/secure-web-appliance/220375-use-secure-web-appliance-best-practices.html
(plus TONS of other good stuff)


You need to make the call on whether to use WCCP or explicit redirection.
https://www.cisco.com/c/en/us/support/docs/security/web-security-appliance/117940-qa-wsa-00.html
I used WCCP. I put P1 on the same subnet/vlan as the inside interface of the firewall, and then use WCCP off of the inside interface of the ASA to send traffic to the WSA for filtering, b

A bunch of good info here:
https://www.cisco.com/c/en/us/support/security/web-security-appliance/series.html

There's a section in here starting on page 10, but its not great. I had a good one that I'm still digging for ...
https://www.cisco.com/c/dam/en/us/td/docs/solutions/Enterprise/Education/CCVE/ccve_sba_security_design.pdf

wow ...! thank you soooo much, I really appreciate all the info.

Ced W
Level 1
Level 1

that link seems to be broken but thank you very much  for all the info ...!

Fixed:  https://www.cisco.com/c/m/en_us/products/security/web-security/setup-guide.html

And the doc I used back in the day... 

 

 

amojarra
Cisco Employee
Cisco Employee

Hi @Ced W 

As Ken mentioned it is very important to see what will be your proxy Deployment (Transparent or Explicit)

Usually, P1 is used for inside and P2 is for outside, but it is not a MUST. And Management for the Management, 

On the other hand, I would suggest to check the version which you are planning to use to make sure you have complete overview of the changes and limitations.

The Sx96 ( S196 ) will ship with AsyncOS 15.2 here is the release notes : Release Notes for AsyncOS 15.2 for Cisco Secure Web Appliance - Cisco

The Secure Web Appliance S196, S396, S696, and S696F support Cisco AsyncOS version 15.2 and later

So you need to have the Smart License account and active Smart License. 

 If you have the GUI access, you will be able to license the device and run SystemSetup wizard. 

In order to separate Management traffic via Data traffic (P1,P2) you can Navigate to GUI > Network > Interfaces > Edit Settings and choose: Restrict M1 port to appliance management services only

amojarra_0-1727432217816.png

 

And if you need to separate the P1 and P2 interface traffic, you can do it by defining different Route in the Data Routing Table.

like 0.0.0.0/0 for your Internet Gateway and 10.0.0.0/8 to your inside Router.

 

And You mentioned: ...install to turn up new proxy servers

If there are more than one new WSA or you are already having some WSA in your network, you need to consider the load balancing or failover scenarios.

We have Failover Option in the SWA, you can review : Configuring Failover Groups for High Availability from the user guide. 

regarding the Load Balancing , you can do it by any load balancer or with WCCP ( If you are using transparent redirection ) 

 

About the TAP Interface, you just need one interface (Lets say T1) which is connected same broadcast domain as your other network security device. 

 

Regards,

Amirhossein Mojarrad

+++++++++++++++++++++++++++++++++++++++++++++++++++

++++     If you find this answer helpful, please rate it as such    ++++

+++++++++++++++++++++++++++++++++++++++++++++++++++

 

 

 

 

 

Regards,
Amirhossein Mojarrad
+++++++++++++++++++++++++++++++++++++++++++++++++++
++++ If you find this answer helpful, please rate it as such ++++
+++++++++++++++++++++++++++++++++++++++++++++++++++

Ced W
Level 1
Level 1

We would like to use the appliance in transparent mode. current version is AsyncOS 15.2.0 for Web build 116. I do have 2 WSA's to bring online but right now I am just focusing on the one and possibly use the other as a cold standby until I have the real estate to rack it.

However, I am still pouring over the info @Ken Stieers sent and looking over the info you, @amojarra sent in order to have the WSA reach out and pull a license so I can run the wizard. I have P1 going to the ASA and the attached screenshots...


amojarra
Cisco Employee
Cisco Employee

@Ced W 

Thanks for the info

Since you just have P1 in your design 

amojarra_0-1727545874118.png

if you choose restrict M1 port, then you will see 2 routing table 

you need to define 2 default gateways there, one for Managment and the other for data 

since it is just P1, you can redirect all the traffic to your Inside Router (IR1) then it will forward the internet traffic to the Outside router and client's traffic to Clients .

and for management interface , again since they are in a separate subnet, separate router, you can define a separate default gateway. 

 

in transparent deployment , depends on how you are configuring it ( WCCP or Policy based routing -PBR ) the logic will be

1) if any traffic comes from "client Interface" , and is going to internet port 80 or 443 ( or whatever port your company use like 8080, 8443 ... ) redirect them to WSA 

2) if any traffic comes from "WSA interface" , and is going to internet port 80 or 443 ( or whatever port your company use like 8080, 8443 ... ) they dont need to redirect, send them to internet router , 

3) return path, depends if you are using IP spoofing or not, in general , you redirect all the return traffic sourced from Internet , source Port 80,443 to WSA , 

then WSA will send the traffic to client Ip as destination IP 

 

so need to define source interface and traffic pattern ( Src-port or Dst-port ) and how to route them.

 

there are some other destinations which you can create some manual route entry, for example: 

[1] you need access to Active directory via Management, 

[2] you need access to DLP server via Management interface 

[3] you need the access to DNS via Management Interface . 

...

you can define the route for them, and some of them like Active directory you can choose which interface from GUI

same for smart license, you can choose "test interface" which is the interface WSA should use to access smart license. 

 

 

 

Regards,

Amirhossein Mojarrad

+++++++++++++++++++++++++++++++++++++++++++++++++++

++++     If you find this answer helpful, please rate it as such    ++++

+++++++++++++++++++++++++++++++++++++++++++++++++++

 

 

 

Regards,
Amirhossein Mojarrad
+++++++++++++++++++++++++++++++++++++++++++++++++++
++++ If you find this answer helpful, please rate it as such ++++
+++++++++++++++++++++++++++++++++++++++++++++++++++