Pros and cons for using https on a logon page?

[Randall Parker]

1) What sorts of scenarios make the possibility of sniffing out a password a higher risk?

2) Do packets travel unencrypted over 802.11 wireless? Is it easy to sniff such packets and catch a submit of a logon web page using http? Wireless strikes me as the greatest risk.

3) Have you used http or https for Logon.aspx pages and why?

4) Anyone know if IIS on Windows Server 2003 has https built in? Easy or hard to configure?

5) If one uses https does one have to do any different code in the CodeBehind for the web page? Or is that all handled in the IIS configuration and Web.config?

6) How does one redirect from an https logon back to the http page the user logged in on? Does the http part show up in the RETURNURL argument?

 

[neilmcguigan]

Hi Randall,

I'd recommend reading this article regarding switching betweeen HTTP and HTTPS automatically:

http://www.codeproject.com/aspnet/WebPageSecurity_v2.asp

You can install the free SelfSSL as part of the IIS resource kit. Users will get a warning that your certificate is not trusted, but the connection will be encrypted:

http://www.microsoft.com/downloads/...ee-a71a-4c73-b628-ade629c89499&displaylang=en

RapidSSL has pretty cheap trusted SSL certificates:

http://www.rapidssl.com/ssl-certificate-products/rapidssl/ssl-certificate-rapidssl.htm

Regarding your questions:

1. if someone can see a packet going to your server, they can see the password if not using SSL.

2. if using encrypted wireless, then no. But the leg of the trip that does not go over encrypted wireless will not be encrypted.

3. yes. to increase user trust, and to prevent packet sniffing

4. IIS supports SSL, but you need an SSL certificate.

5. you won't need to change any code. you can enforce SSL using IIS

6. see the first link

Cheers

Neil

 

[nimd4]

SSL certificates

Very, very old thread, eye know!.. However, here are some mo' (affordable) SSL certificates: Comodo, GeoTrust, etc.

https://www.namecheap.com/security/ssl-certificates.aspx