Netgear GS724Tv4 Software Administration Manual - Page 220

IP DSCP, IP Precedence, IP TOS Bits, Apply, To modify the match criteria for an ACL rule

Page 220 highlights

GS716Tv3, GS724Tv4, and GS748Tv5 Smart Switches alternative ways of specifying a match criterion for the same Service Type field in the IP header, however each uses a different user notation. After you select the service type, specify the value associated with the type. - IP DSCP. Specify the IP DiffServ Code Point (DSCP) value. The DSCP is defined as the high-order six bits of the Service Type octet in the IP header. Select an IP DSCP value from the menu. To specify a numeric value in the available field, select Other from the menu and type an integer from 0 to 63 in the field. - IP Precedence. The IP Precedence field in a packet is defined as the high-order three bits of the Service Type octet in the IP header. This is an optional configuration. Enter an integer from 0 to 7. - IP TOS Bits. Matches on the Type of Service bits in the IP header when checked. In the first TOS field, specify the two-digit hexadecimal TOS number. The second field is for the TOS Mask, which specifies the bit positions that are used for comparison against the IP TOS field in a packet. The TOS Mask value is a two-digit hexadecimal number from 00 to ff, representing an inverted (wildcard) mask. The zero-valued bits in the TOS Mask denote the bit positions in the TOS Bits value that are used for comparison against the IP TOS field of a packet. For example, to check for an IP TOS value having bits 7 and 5 set and bit 1 clear, where bit 7 is most significant, use a TOS Bits value of a0 and a TOS Mask of 00. 6. Click the Apply button.  To modify the match criteria for an ACL rule: 1. From the ACL Name list on the Extended ACL Rules screen, select the ACL that includes the rule to update. 2. In the Extended ACL Rule Table, click the rule ID. The rule ID is a hyperlink to the Extended ACL Rule Configuration screen. 3. Modify the ACL rule information. 4. Click the Apply button.  To delete and IP ACL rule: 1. In the Extended ACL Rule Table on the IP Rules screen, select the check box associated with the rule to remove. 2. Click the Delete button. Managing Device Security 220

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
  • 197
  • 198
  • 199
  • 200
  • 201
  • 202
  • 203
  • 204
  • 205
  • 206
  • 207
  • 208
  • 209
  • 210
  • 211
  • 212
  • 213
  • 214
  • 215
  • 216
  • 217
  • 218
  • 219
  • 220
  • 221
  • 222
  • 223
  • 224
  • 225
  • 226
  • 227
  • 228
  • 229
  • 230
  • 231
  • 232
  • 233
  • 234
  • 235
  • 236
  • 237
  • 238
  • 239
  • 240
  • 241
  • 242
  • 243
  • 244
  • 245
  • 246
  • 247
  • 248
  • 249
  • 250
  • 251
  • 252
  • 253
  • 254
  • 255
  • 256
  • 257
  • 258
  • 259
  • 260
  • 261
  • 262
  • 263
  • 264
  • 265
  • 266
  • 267
  • 268
  • 269
  • 270
  • 271
  • 272
  • 273
  • 274
  • 275
  • 276
  • 277
  • 278
  • 279
  • 280
  • 281
  • 282
  • 283
  • 284
  • 285
  • 286
  • 287
  • 288
  • 289
  • 290

Managing Device Security
220
GS716Tv3, GS724Tv4, and GS748Tv5 Smart Switches
alternative ways of specifying a match criterion for the same Service Type field in the
IP header, however each uses a different user notation. After you select the service
type, specify the value associated with the type.
-
IP DSCP
. Specify the IP DiffServ Code Point (DSCP) value. The DSCP is defined
as the high-order six bits of the Service Type octet in the IP header. Select an IP
DSCP value from the menu. To specify a numeric value in the available field,
select Other from the menu and type an integer from 0 to 63 in the field.
-
IP Precedence
. The IP Precedence field in a packet is defined as the high-order
three bits of the Service Type octet in the IP header. This is an optional
configuration. Enter an integer from 0 to 7.
-
IP TOS Bits
. Matches on the Type of Service bits in the IP header when checked.
In the first TOS field, specify the two-digit hexadecimal TOS number. The second
field is for the TOS Mask, which specifies the bit positions that are used for
comparison against the IP TOS field in a packet. The TOS Mask value is a
two-digit hexadecimal number from 00 to ff, representing an inverted (wildcard)
mask. The zero-valued bits in the TOS Mask denote the bit positions in the TOS
Bits value that are used for comparison against the IP TOS field of a packet. For
example, to check for an IP TOS value having bits 7 and 5 set and bit 1 clear,
where bit 7 is most significant, use a TOS Bits value of a0 and a TOS Mask of 00.
6.
Click the
Apply
button.
To modify the match criteria for an ACL rule:
1.
From the ACL Name list on the Extended ACL Rules screen, select the ACL that
includes the rule to update.
2.
In the Extended ACL Rule Table, click the rule ID.
The rule ID is a hyperlink to the Extended ACL Rule Configuration screen.
3.
Modify the ACL rule information.
4.
Click the
Apply
button.
To delete and IP ACL rule:
1.
In the Extended ACL Rule Table on the IP Rules screen, select the check box
associated with the rule to remove.
2.
Click the
Delete
button.