The WebSEAL reverse proxy is great for protecting your critical systems.
There is always room for improvement in all areas.
On and off for five years.
Yes, because there are so many moving parts it can often be difficult getting it right first time. Linux is more difficult than Windows but I feel Linux is more stable.
Not once it’s is installed.
No issues encountered.
No previous solution used.
Complex. Like I mentioned, there are so many moving parts and I had issues with DB2 installation and patching it up to latest versions. This seems typical but others may have had better experiences.
Vendor. Their experience was phenomenal.
No other options evaluated.
Try to install a few times on various platforms to familiarise yourself with any issues.