PM45352: SIP PROXY ISSUES REVERSE DNS LOOKUP ON NEW CLIENT CONNECTIONS

Fixes are available

APAR status

Closed as program error.

Error description

The Session Initiation Protocol (SIP) Proxy is doing reverse
DNS lookups on new client connections even though security is
turned off

Local fix

```
n/a
```

Problem summary

****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server V7.0 and V8.0 Session Initiation     *
*                  Protocol (SIP) Proxy.                       *
****************************************************************
* PROBLEM DESCRIPTION: The SIP Proxy issues a reverse DNS      *
*                      lookup for new inbound TCP and TLS      *
*                      connections to the SIP Proxy.           *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The SIP Proxy issues a reverse DNS lookup for new inbound TCP
and TLS connections to the SIP Proxy.   This can cause delays
processing messages.

Problem conclusion

We removed the reverse DNS lookups at the SIP Proxy.   To
enable this fix, you must add a custom property to the
SIP Proxy.   In the administrative console, go to the
"WebSphere proxy servers > proxy > SIP proxy settings > Custom
properties page.  Add a custom property with name
"disableAllHostNameLookups" and value "true".

The fix for this APAR is currently targeted for inclusion in
fix packs 7.0.0.21 and 8.0.0.2.  Please refer to the
Recommended Updates page for delivery information:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980

Temporary fix

Comments

APAR Information

APAR number
PM45352
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2011-08-09
Closed date
2011-09-02
Last modified date
2011-09-02

APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name
WEBS APP SERV N
Fixed component ID
5724H8800

Applicable component levels

R700 PSY
UP
R800 PSY
UP

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.0","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
27 October 2021

Tips

PM45352: SIP PROXY ISSUES REVERSE DNS LOOKUP ON NEW CLIENT CONNECTIONS

Fixes are available

Subscribe

APAR status

Closed as program error.

Error description

Local fix

Problem summary

Problem conclusion

Temporary fix

Comments

APAR Information

APAR number

Reported component name

Reported component ID

Reported release

Status

PE

HIPER

Special Attention

Submitted date

Closed date

Last modified date

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Fix information

Fixed component name

Fixed component ID

Applicable component levels

R700 PSY

R800 PSY

Document Information

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