Network Hardening on Solaris

Just adding this script on your /etc/rc3.d, dont' forget to chmod it to 744.

/etc/rc3.d/S100nettune
#!/bin/sh
#
# Basic Hardening
/usr/sbin/ndd -set /dev/ip ip_forward_src_routed 0
/usr/sbin/ndd -set /dev/ip ip_forwarding 0

/usr/sbin/ndd -set /dev/tcp tcp_conn_req_max_q 16384
/usr/sbin/ndd -set /dev/tcp tcp_conn_req_max_q0 16384
/usr/sbin/ndd -set /dev/tcp tcp_xmit_hiwat 400000
/usr/sbin/ndd -set /dev/tcp tcp_recv_hiwat 400000
/usr/sbin/ndd -set /dev/tcp tcp_cwnd_max 2097152
/usr/sbin/ndd -set /dev/tcp tcp_ip_abort_interval 60000
/usr/sbin/ndd -set /dev/tcp tcp_rexmit_interval_initial 4000
/usr/sbin/ndd -set /dev/tcp tcp_rexmit_interval_max 10000
/usr/sbin/ndd -set /dev/tcp tcp_rexmit_interval_min 3000
/usr/sbin/ndd -set /dev/tcp tcp_max_buf 4194304
/usr/sbin/ndd -set /dev/tcp tcp_maxpsz_multiplier 10

#Oracle Required
/usr/sbin/ndd -set /dev/udp udp_recv_hiwat 65535
/usr/sbin/ndd -set /dev/udp udp_xmit_hiwat 65535

# Added parameter
/usr/sbin/ndd -set /dev/tcp tcp_time_wait_interval 30000
/usr/sbin/ndd -set /dev/tcp tcp_keepalive_interval 60000
/usr/sbin/ndd -set /dev/tcp tcp_deferred_ack_interval 20

Popular posts from this blog

Howto configure boot device order on ILOM

To ensure the system can be installed using the DVD drive, the boot device order in the BIOS has to be configured correctly so that the DVD drive takes precedence over the internal hard drives. 1 Log into the ILOM. 2 Start the system if it is not already running: > start /SYS else reset the system: > reset /SYS 3 Log onto the system’s console: > start /SP/console 4 When prompted, press Esc 2 to enter setup. 5 Once the setup menu has loaded, navigate across to the Boot screen by using the right arrow key. 6 Using the down arrow key, select the Boot Device Priority item and press Enter. 7 Confirm that the item [CD/DVD] is higher in the list than the item [Hard Drive]. The order can be changed by selecting the relevant item and using the +/- keys to move the item up or down in the list. 8 Once the order is correct, save any changes made by pressing Esc and then navigate right to the Exit screen. Select the item Save Changes and Exit and press Enter, then confirm
Read more

SAN Switch Config Command

Login via console Fabric OS (swd77) swd77 console login: admin Password: Note: password default is "password" - set hostname swd77:admin> switchName swcdr1 Committing configuration... Done. swcdr1:admin> - set IP Address swcdr1:admin> ipaddrset Ethernet IP Address [192.168.0.25]: 192.168.0.11 Ethernet Subnetmask [255.255.255.0]: Fibre Channel IP Address [0.0.0.0]: Fibre Channel Subnetmask [0.0.0.0]: Gateway IP Address [192.168.0.25]: 0.0.0.0 Issuing gratuitous ARP...Done. 2008/07/14-18:46:43, [WEBD-1007], 494,, INFO, swcdr1, HTTP server will be restarted due to change of IP Address IP address is being changed...Done. Committing configuration...Done. - Configure basic parameter swcdr1:admin> switchDisable swcdr1:admin> configure Configure... Fabric parameters (yes, y, no, n): [no] y Domain: (1..239) [1] 22008/07/14-18:50:40, [FW-1424], 24,, WARNING, swcdr1, Switch status changed from HEALTHY to MARGINAL. 2008/07/14-18:50:40, [FW-1439], 25,, WARNING, swcdr
Read more

Howto cstm on HP-UX

If we want to show all machine information, just use cstm. # cstm Running Command File (/usr/sbin/stm/ui/config/.stmrc). -- Information -- Support Tools Manager Version C.46.05 (C) Copyright Hewlett Packard Co. 1995-2002 All Rights Reserved Use of this program is subject to the licensing restrictions described in "Help-->On Version". HP shall not be liable for any damages resulting from misuse or unauthorized use of this program. cstm> Map all device in this system with : cstm> map Dev Last Last Op Num Path Product Active Tool Status === ==================== ========================= =========== ============= 1 system system (1014) Information Successful 2 memory IPF_MEMORY (1014) Information Successful ------------ We want to know info about memory information cstm>sel d 2 cstm>
Read more