Enabling ALGs (NSM Procedure)

In ScreenOS 6.0, the following modifications were made to prevent high CPU utilization.

For efficient CPU utilization, you can enable or disable the ALGs.

To enable or disable the ALGs:

  1. In the NSM navigation tree, click Device Manager > Devices.
  2. Select a device or a model device
  3. Click the Edit icon to edit the device. The relevant device dialog box appears.
  4. In the device navigation tree, click Advanced > ALGs.
  5. ALGs are listed depending on the type of device you selected and the OS version. ALGs can be enabled or disabled by checking or clearing their check boxes. See Table 12.

    Table 12: ALGs Default Status



    H.323, SIP, MGCP, SCCP, MSRPC, SunRPC, SQL, PPTP, and DNS Inhibit AAAA(IPv6).

    Disabled by default on ISG1000, ISG2000, NetScreen–2000 line, and NetScreen–5000 line running ScreenOS 6.0 or later.

    FTP, DNS, Real, Rlogin, RSH, TALK, TFTP, XING, and SCTP

    Enabled by default on a device running ScreenOS 6.0 or later.

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